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A. Registration, general

I would like to cooperate with a company in another Member State by ‘chemical leasing'. Does this business model influence my registration obligations under REACH?
Business models such as ‘chemical leasing', where the purchase is based on the fulfilled functions performed by the chemical and where the value-based units, such as the number of painted articles, are the main basis for payment, or any other business models do not influence your registration obligations. 
It is still the manufacturer or the importer to the EU who is responsible for registering the relevant substances under REACH.
When do I have to register my substance?

A substance must be registered before the manufacture or import can start at an annual quantity of one tonne or more. Before the registration of such substances, the manufacturer or importer has to make an inquiry to ECHA regarding any previous registration for the same substance.
Upon registration, the registrant may have to wait for three weeks after the registration dossier is submitted before starting or continuing the manufacture or import of the substance (Article 21 of the REACH Regulation).

What is considered as manufacturing?

Under REACH, manufacturing means producing or extracting substances in their natural state. It is a case-by-case decision to establish the extent to which the different steps in producing the substance are covered by the definition ‘manufacturing'.

A company that purchases registered substances from within the EU and then formulates these into mixtures (e.g. paints) would be regarded as a downstream user under REACH.

In layman's terms, this company might be considered to be a manufacturer of paints. However, within the context of REACH, the company would not be a manufacturer of a substance and so would have no registration obligations for these substances. For further information see the Guidance on registration. Examples on manufacturing of intermediates available in the Guidance on intermediates and Practical Guide 16.

How do I document substances under customs supervision?

If substances are in temporary storage with a view to re-exportation and remain under customs supervision, they are not subject to REACH.

To rely on this exemption, you need to document that the following conditions are fulfilled:

  1. The substances are put in a free zone or free warehouse as defined under customs legislation or placed under another relevant customs procedure (transit procedure, temporary storage).
  2. The substances are kept under the supervision of the customs authorities.
  3. The substances do not undergo any form of treatment or processing during their stay in the EU. A free zone or a free warehouse in the EU territory is part of the EU.

For further information see the Guidance on registration, chapter ‘Substances under customs supervision’.

How do I communicate that I ceased manufacture/import?

You can cease manufacture due to the following scenarios:

  • You ceased manufacture/import due to commercial reasons according to Article 50(2) of the REACH Regulation. The registered volume in your registration is updated to zero and the status of your registration is changed to "inactive". If you restart manufacture/import of the substance, you should inform ECHA via the 'Restart manufacture or import' button available on the reference number page in REACH-IT.
  • You ceased manufacture following a draft decision according to Article 50(3) of the REACH Regulation. The status of your registration will be changed to "Revoked". A new registration must be submitted if you wish to restart manufacturing/importing your substance.

Before ceasing manufacture, we recommend that you read Q&A 0054 that explains the duties of registrants that cease manufacture and import.

Below are the steps on how to cease/restart manufacture in REACH-IT.


You should use the functionality ‘restart manufacture or import’ to reactivate the reference number, when a substance is manufactured/imported again.

I now have my registration number. What happens next?

Your registration remains your responsibility, so keep it always up-to-date.

Safety Data Sheet
If you need to give your customers safety data sheets, you will need to include your registration number in the safety data sheets the next time you update them. In addition, if you have conducted a chemical safety assessment and needed to develop exposure scenarios, you have to attach them to the safety data sheet, outlining the use-specific conditions of safe use of the substance. This needs to be done as soon as possible.

SME verification
If you have claimed you are an SME and have benefited from the reduced registration fees, ECHA may verify the size of your company. Make sure that your REACH-IT account includes all the necessary documentation to justify the size of your company.

Joint Submission management and Data sharing
We strongly recommended that you put in place a mechanism discuss within your joint submission and for dossier update, when necessary. For example, you must also share data and give access to the joint submission to newcomers. You can charge for access to the data by sharing the costs in a fair, transparent and non-discriminatory way.

Dossier evaluation
ECHA will check the compliance of at least 20% of the received registration dossiers to verify that the information submitted is compliant with the legal requirements. The outcome of this dossier evaluation may be a request for additional information. Additionally, ECHA will examine the testing proposals included in the dossiers. This will happen by 1 June 2022 for registrations submitted for the deadline of 31 May 2018, and within 180 days for other registrations.

ECHA will communicate with you via REACH-IT, if the information of your registration dossier is being assessed, so we invite you to check your account regularly.

B. Registration, registrant

Who has to register substances?

Only a natural or legal person established within the European Economic Area (EEA)/EU can be a registrant. Registration must take place when this person:
1. manufactures a substance within the EU in quantities of 1 tonne or more per year;
2. imports a substance into the EU of quantities of 1 tonne or more per year; or
3. has been appointed as an only representative according to Article 8 of REACH (see FAQs on Only Representative of non-EU manufacturer).

The national law of each country provides the specific provisions concerning natural or legal personality and when such a natural or legal person is established in its territory.

A company not established within the EU does not have direct obligations under REACH. For obligations of a non-EU company, please see to Q&A 12.

You can use the Navigator tool to determine your obligations under REACH and find the appropriate guidance.

Who is the registrant in case of toll manufacturing of substances?

A toll manufacturer is normally understood to be a company that manufactures a substance (on its own, in a mixture or in an article) in its own technical facilities following the instructions of a third party in exchange for an economic compensation. The substance is generally put on the market by the third party. This construction is, for example, used for an intermediate step in the production process for which sophisticated equipment is needed (distillation, centrifugation etc.). According to the REACH Regulation, manufacturers of substances are required to register the substances they manufacture above one tonne per year. From this point of view the toll manufacturer is a manufacturer and has to register the substance.

This scenario is further discussed in the factsheet Toll manufacturer under the REACH Regulation.

Who is the registrant in case of an international company?

International companies sometimes have several daughter companies in the EEA/EU, often spread over several countries. If these subsidiaries of the parent company are separate legal entities from it, (a natural or legal person as defined under applicable national law), then each of those must determine if they qualify as registrant under REACH.

Please see Q&A 27 on who has to register a substance.

Can a Non-EEA manufacturer of a substance register under REACH?

No. The obligation to register a substance applies only to actors established within the EEA. Thus, the registration of substances imported into the EEA on their own, in mixtures or, in certain cases, in articles will have to be done by the importer established in the EEA. This implies that each individual importer needs to register the substance. However, according to Article 8(1) of the REACH Regulation manufacturers of substances, formulators of mixtures or producers of articles established outside the EEA, can nominate an only representative established within the EEA to carry out the required registration. This will relieve the individual EEA importers within the supply chain of that non-EEA manufacturer from their registration obligations for these substances. They will be regarded as downstream users of this only representative. However, the registration obligation may still apply if the EEA-importers import the same substance from other non-EEA manufacturers.
More information on the only representative role can be found in Only Representative of non-EU manufacturer and in section'Only representative of a "non-EU manufacturer"' of the Guidance on registration.

For more information, see: http://echa.europa.eu/contact/helpdesk-contact-form/enquiry-on-reach-from-non-eu-countries.

C. Registration, tonnage

Can I register for a tonnage band higher than the actual tonnage of the substance?

Yes. Companies are free to register a substance for a tonnage band which is above the actual tonnage of the substance. This is also reflected in Section 'Calculation of the total volume' of the Guidance on registration.

A registration at a higher tonnage band will trigger a higher registration fee in accordance with Regulation (EC) No 340/2008. In addition, the technical dossier will need to comprise all the information required for the registered tonnage band. Practical advice on how to complete a IUCLID dossier is provided in the Manual How to prepare registration and PPORD dossier at: http://echa.europa.eu/manuals.

Does a registration of an isolated intermediate pursuant to Article 17(2) or Article 18(2) of REACH have to be updated due to a change of tonnage band?
A manufacturer or importer who has registered an isolated intermediate pursuant to Article 17(2) or Article 18(2) of REACH does in general not have to update this registration in case of a change of tonnage band. However, such a registration would have to be updated due to a change of tonnage band in two cases.
Case 1: Where the registration is for a transported isolated intermediate and the 1000 t/a threshold is reached, the registrant must update his registration dossier by submitting the information specified in Annex VII of the REACH Regulation, if not already included in the dossier.
Case 2: Where the registrant ceases manufacture and import of the isolated intermediate, he has the duties described in Q&A 54, which include an update of the registration.
How do I calculate the tonnage?

Each registrant has to calculate the yearly tonnage for the registration dossier. The yearly tonnage is calculated as the volume per manufacturer/importer per calendar year.


What do I need to do if I find that my volume has exceeded the tonnage band I have registered the substance?

A registrant needs to update their registration without undue delay as soon as the ‘annual or total quantities’ they manufacture or import reach the next tonnage band threshold, as required by Article 22(1)(c). As soon as the annual volume of a substance that has already been registered reaches the next tonnage threshold, the manufacturer or importer has the duty to inform ECHA of the additional data required, following Article 12(2).

D. Registration, dossier creation

ECHA has assigned a list number to my substance. Should I report this in my registration dossier?

The list numbers published by ECHA are not official EC entries. However, we recommend you to assign such an entry to the substance you intend to register provided this list number is linked to a CAS number (list numbers starting with 6 or 8) or a chemical name (list numbers starting with 9) corresponding to a correct and specific identifier for your substance. If this entry is too generic for your substance and there is no appropriate EC entry available, you should not assign any list/EC number to your substance.

E. Registration, completeness check

What are the consequences if my registration fails at the completeness check?

If your registration dossier fails the technical completeness check (TCC) for the first time, you are given a deadline of 4 months during which you have one chance to amend the incompleteness. If you fail to submit the complete dossier by this given deadline, your submission will be rejected.

Rejection of a new registration means that the registration number is not assigned to your substance and any fees paid for this registration will not be refunded or otherwise credited. Consequently, you may only start to manufacture/import the substance or to produce or import an article once you have a complete registration and ECHA has issued you a registration number. If you wish to proceed with your registration you need to make a new initial submission. It will be subject to a new completeness check and registration fee.

Rejection of a registration update means that you maintain your existing registration number but any new information included in that update will not be included in the ECHA’s database. Any fees paid for this registration update will not be refunded or otherwise credited. If the update covered a change of tonnage band, you may not manufacture/import the substance or produce or import an article containing it at the increased tonnage band until ECHA has confirmed that your registration update is complete.

If the update of the registration dossier was submitted to include nanoforms of the substance then the rejection means that, even though you maintain your existing registration number for the non-nanoforms of the substance, the registration does not cover the manufacture or import of the nanoforms of the substance. Registrants that manufacture/import nanoforms of the substance after 1 January 2020 without a registration that covers these nanoforms are in breach of the REACH regulation which may trigger enforcement measures. Therefore, if your registration update to include nanoforms was rejected, you need to, at earliest possible, submit a new registration update in order to fulfil your obligations for nanoforms.

How can I check my dossier for business rules and technical completeness check failures before I submit it to ECHA?

As a first step, prepare your registration/PPORD dataset and dossier according to the advice given in the manual ‘How to prepare registration and PPORD dossiers’ available at: http://echa.europa.eu/manuals. Annexes 1-3 of the manual also give an overview of the business rules and technical completeness check rules that apply to registration and PPORD dossiers. 

Next, use the IUCLID Validation assistant plug-in to help you detect business rules and technical completeness check failures present in your dataset and dossier. To run the Validation assistant, right click on your dataset in the Navigation panel Validate follow the steps in the wizard. The same validation should be performed on the dossier to make sure that no failures have been introduced during dossier creation.

While the Validation assistant cannot replicate all the checks performed by ECHA, it simulates the majority of the verifications done and helps you minimise the chance of failure during submission. It is important to keep in mind, that any failure in the Validation assistant Submission checks tab, that is left uncorrected before submitting your dossier in REACH-IT, will lead to your submission not being accepted by ECHA. 

You can find a video tutorials on the use of the IUCLID Validation assistant in the link below:


Please note that if the Validation assistant does not indicate any failures, this is not an automatic confirmation of that your dossier is complete. As of 21 June 2016, the technical completeness check includes additional manual verifications of the registration dossier by ECHA staff. These checks cannot be replicated using the Validation assistant plug-in; the related completeness issues cannot be displayed by the tool.

Information on the areas of the additional verifications can be found in the following location; https://echa.europa.eu/documents/10162/13652/manual_completeness_check_en.pdf.

We also recommend you to have a look at our webinars on the completeness check process: 




I submitted a dossier in response to an ECHA decision under compliance check and my dossier failed the technical completeness check (TCC). How should I proceed?

If your dossier is submitted before the compliance check deadline has passed, you may follow the deadline given in the TCC letter. ECHA will not continue with the Evaluation process before you have submitted the requested update for the technical completeness check failure(s).

If you fail TCC for the second time while submitting the requested update, your submission will be rejected.

If at this point the compliance check deadline has already passed, it means that ECHA has not received a response to the compliance check decision and may proceed with further regulatory actions. It is therefore advisable not to leave the submission of updates to regulatory requests to the last moment.

You can inform ECHA about not meeting the compliance check deadline via the contact form: https://echa.europa.eu/contact

Do I need to modify the all the data waiving justifications and use in IUCLID 6 ‘Justification for data waiving’ pick list values if I had prepared my data in IUCLID 5 and provided the justifications in free text?

There is no need to change the data waiving justification from free text to an available picklist phrase. A free text justification will be considered equally complete to a picklist value, if it is in line with column 2 of REACH Annexes VII-X, or sections 2-3 of Annex XI.

However, when preparing a dossier in IUCLID 6 from IUCLID 5 data, please review the selection in the field ‘Endpoint’ in particular for IUCLID sections where different information requirements can be addressed (e.g. 4.13, 7.8.1) to ensure that you have clearly indicated that the appropriate requirement is being waived.

What should I do if the Validation assistant reports QLT warnings in the Quality checks tab?

The quality rules warn the user of common inconsistencies and shortcomings in the dossier. These warnings will not prevent you from successfully submitting your dossier in REACH-IT. However, leaving quality warnings uncorrected may lead to future clarification requests by ECHA.

Does the manual verification apply to all submitted registration dossiers?

The manual verification applies to all registration dossiers submitted to ECHA. The manual checks focus on ensuring that registrants who waive or deviate from the standard information requirements provide justifications foreseen by the legislation. Therefore, the extent of the verification depends on whether the dossier contains waiving of standard information or deviations from substance identification conventions, as well as on the specific requirements that apply to the registration type (i.e. lead, member, individual registration) and the registration scope (tonnage band, isolated intermediate).

For further information, please refer to the document ‘Information on manual verification at completeness check’ available at: https://echa.europa.eu/manuals.

I received a task in REACH-IT indicating that my submission failed the technical completeness check. Where can I find further information on the reasons and implications of the failure?

In the task you have a link to the “Submission page” of the submission. Follow this link and go to the “Key documents” section at the bottom of the page. Here you can download the technical completeness check communication which contains all the relevant information regarding the failure, as well as the steps required by you. 

I am unfamiliar with the registration process. What does the completeness check consist of?

The completeness check is based on REACH Article 20(2). It applies to all registration dossiers submitted to ECHA, (i.e. initial submissions and updates). The completeness check consists of two parallel verifications: (i) the technical completeness check, in which ECHA verifies that all the required elements have been provided in the registration dossier; and (ii) the financial completeness check, in which ECHA verifies that the registration fee has been paid, if applicable to that submission.

If during the technical completeness check the registration dossier you submitted is found incomplete, ECHA will issue a deadline by which you have only one attempt to submit the complete information. If you do not provide the requested information by the set deadline in the form of an update dossier, the submission will be rejected. In such a case, any registration fee you had paid in relation with this submission will not be refunded or otherwise credited.

You can find more information about the registration process on "From sbmission to decision" .

We also recommend you to have a look at our webinar on the technical completeness check process.

The Validation assistant reports a completeness check failure related to that the technical function of the substance requires article service life to be reported. However, the uses of my substance do not result in inclusion in or onto an article. What should I do?

IUCLID 6 v.4.14.1 includes the new Validation assistant rule TCC_0305_08 which checks that a service life is provided in case a specific technical function has been indicated for the substance. The rule is based on the list of technical functions and their definition in ECHA Guidance R.12.

Contrary to its indication as a completeness check rule by the Validation assistant, this rule should be interpreted as a quality warning. The rule will not cause a completeness check failure when the dossier is submitted in REACH-IT. The rule type will be corrected from a completeness check rule to a quality rule in the October 2020 IUCLID release.

As for all quality rules reported by the Validation assistant, when TCC_0305_08 is triggered, it is recommendable to review the corresponding information reported in IUCLID:

  • If you realise that your substance is indeed included in or onto articles, you should report the corresponding service life records in IUCLID section 3.5.6.
  • If you confirm that service life in articles is not relevant for your substance, and that the reporting of the technical functions is accurate, you do not need to modify the use description of the substance despite the indication by the Validation assistant. You may find the Q&A 1669 helpful to further clarify when a technical function is expected to lead to a service life in/on articles. 

When reporting the technical function, please bear in mind the following:

  • Reporting the technical functions of the substance should be limited to what the substance itself (technically) actually does in a mixture and/or in a material/article and should not refer to the function of the final mixture or article.
  • The technical function of the substance should only be reported for the particular life cycle stage and use where this function is delivered. Where a substance is present in a use without particular function, the option ‘no technical function’ should be selected.
  • The technical functions reported should only include those that the registrant is aware of (including those emphasised in marketing) or has been made aware of by its customers.
  • Where the actual substance function cannot be described by one of the technical functions in ECHA Guidance R.12, the function should be described using the picklist option ‘other:’ and adding a brief explanation of this function.

Note that all other completeness check rules related to article service life will lead to a completeness check failure when the dossier is submitted in REACH-IT. The exception applies only to TCC_0305_08.

F. Registration, information on chemicals

Are registration numbers assigned to active substances in biocidal products which are considered as registered under REACH?
No, registration numbers are not assigned to active substances in biocidal products. Registration numbers are assigned exclusively for substances:
- where complete registration dossiers were submitted to ECHA by the registrant according to Article 20 of REACH;
- which were notified under Directive 67/548/EEC and the registration number was claimed by the notifier according to Article 24 of REACH.
How can I check if my supplier has a valid registration?

As you are responsible for using registered substances only, it is your interest to contractually ensure that your supplier guarantees the validity of their registration. Your first option is thus to ask directly your supplier.

If the supplier has not claimed the information as confidential you can search via the registrant name or the registration number from the Registered substances page.

Brief Profile
The full list of public active and inactive registrants/suppliers can be found in the Brief profile.

Fact sheet
The full list of public active and inactive registrants/suppliers/registration numbers can be found in the Fact sheet.

How can I check what information from my registration dossier will be published on the ECHA website?

The IUCLID Dissemination preview plug-in simulates which information from a registration dossier will be made public on the ECHA website at: http://echa.europa.eu/information-on-chemicals/registered-substances, according to Article 119 of the REACH Regulation.

To use the tool, click on the button on the upper corner of your dossier → Dissemination preview. 

How is the total tonnage band calculated for registered substances published on the ECHA website?

The total tonnage band displayed in the registered substances page is aggregated data calculated from all dossiers in a joint/individual submission. Tonnage data is considered only from full registrations where the tonnage band is not claimed confidential. Tonnage data is extracted from the last year reported in section 3.2 of the IUCLID dossier and is the sum of manufactured + imported tonnage - tonnage directly exported – tonnage immediately used as intermediate.

For dossiers that contain full and intermediate registrations, the tonnage data extracted will be the sum of the reported manufactured plus imported tonnage fields, minus the tonnage immediately used as intermediates. Tonnage data will be summed for all dossiers in a joint/individual submission, and will be displayed as:

  • A tonnage band range, i.e., 100 000 – 1 000 000 tonnes, if no dossier contains a confidentiality claim on tonnage band;
  • Open tonnage band, i.e., 1 000+ tonnes, when at least one dossier contains a confidentiality claim on tonnage band;
  • "Tonnage data confidential", when all dossiers aggregated have claimed their tonnage band as confidential, REACH Articles 119(2)(b); and
  • "Intermediate use only", when only intermediate registration dossiers are present in the joint submission.

For more information, see Dissemination manual, section 2.6.11.

Why is there no information on commercially available products on the ECHA pages?

REACH applies to chemical substances and therefore only information about chemicals are disseminated on the ECHA webpage. It does not contain information about chemical preparations, formed by mixing different chemical substances, nor about articles containing chemicals.

In other words, you can find information about methanol or butane, but not for example about a shampoo, cleaning products or pencils.

Under the Waste Framework Directive (EU 2018/851), ECHA will make available information that suppliers submit info on articles that contain substances of very high concern.

Is the information on chemicals accurate?

Most of the data disseminated on the ECHA website is retrieved from dossiers submitted by industry. Due to the quantity of information and the number of chemicals, substance Infocards and Brief Profiles are automatically generated based on the information available. The quality and correctness of the information submitted remains entirely the responsibility of the data submitter. ECHA is working with our stakeholders to continually try to improve overall data quality.

Information submitted by industry may or may not have been verified by ECHA. Under the evaluation processes, 20% of submitted dossiers are to be checked.

Information in ECHA’s regulatory processes is all verified by the relevant experts before publication; this includes lists like the Candidate list of SVHCs, the Authorisation list, and Restriction list.

In the case of an only representative, what name will appear on the dissemination page: the non-EU company or the only representative?

The table below defines which legal entity will be disseminated on ECHA’s webpage depending on information provided in sections 1.1 and 1.7 of your IUCLID dossier.





Further information can be found in the manual Dissemination and confidentiality under the REACH Regulation at: http://echa.europa.eu/manuals

I made a request of confidentiality under art. 119(2) of REACH Regulation. Will ECHA send an official confirmation on the acceptance/rejection of my claim?

Yes. ECHA sends a communication of confirmation/rejection of a confidentiality claim via REACH-IT, at the end of the assessment procedure. While processing the confidentiality claim, the information requested confidential is not disseminated on the ECHA website.

After the assessment procedure, the confidentiality claims considered valid will remain so. However, the rejected confidentiality claims will be disseminated on the ECHA website.

For further information on the assessment procedure please read the manual Dissemination and Confidentiality under REACH Regulation, section 3.8. Assessment of the Confidentiality Request by ECHA.

How do I know whether or not a substance has been registered?

The first place is the lead registrant list, which shows the substances for which the registration process has been initiated and those to which a registration number has already been assigned.

Another option is the list of registered substances on ECHA’s website.
You can see the names of registrants by viewing the information on ECHA’s website. The company names appear at the bottom of the ‘General Information’ section. In some cases, the list may not include your specific supplier, because:
• your supplier is not the one manufacturing or importing the substance; or
• the registrant has successfully claimed the name as confidential or
• the registrant is an importer covered by a representative of the non-EU exporter.

The most reliable information should come from your supplier. You should be aware, however, that information can travel slowly along long supply chains.

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