Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 424-100-2 | CAS number: 40949-94-8 POTASSIUM HEXAMETHYLDISILAZANE
Guidance on Safe Use
Administrative data
First-aid measures
Emergency measure - Inhalation: Symptomatic treatment. Seek immediate medical advice.
Emergency measure - Eyes: Flush eyes continuously with water for at least 15 minutes.
Seek immediate medical attention.
Emergency measure - Skin: Remove contaminated clothing. Flush affected area with water
for at least 15 minutes. Seek immediate medical attention.
Emergency measure - Ingestion: Seek immediate medical attention.
Fire-fighting measures
Recommended extinguishing agent: Dry chemical extinguisher, dry soda ash or dry sodium
chloride. Do not use water.
Product arising from burning: Products of combustion may include oxides of carbon,
nitrogen and metal oxide smoke.
Product determined by test: N
Protective equipment: Full protective clothing and self-contained breathing
apparatus must be worn.
Accidental release measures
Emergency measures in case of spillage: Wear suitable protective clothing (see 2.3.1).
Absorb spillages of solutions with a suitable inert material
(eg sand or soil). Carefully transfer the spillage to
labelled waste containers, or use a sealed industrial vacuum
machine. Dispose of by incineration in accordance with local
regulations.
Clean the spillage area with water and detergent. Do not
direct washings to the drain.
Handling and storage
Handling: Engineering controls are necessary to reduce exposure to the
substance.
When exposure cannot be prevented or adequately controlled
appropriate personal protective equipment should be worn,
e.g. airhood, gloves and greensuit.
Such protective equipment should conform to the appropriate
international or national standards.
Storage: Store in a dry well-ventilated area, away from sources of
ignition. Store under dry nitrogen or dry argon gas, where
practical.
Keep containers tightly closed when not in use.
Packaging of the substance and or preparation: Pressurised metal cylinders containing 250 kg of the
imported preparation.
Transport information
Shippingopen allclose all
SpecialProvisionsopen allclose all
Shippingopen allclose all
Remarksopen allclose all
Marine transport (UN RTDG/IMDG)
Shippingopen allclose all
Remarksopen allclose all
Air transport (UN RTDG/ICAO/IATA)
Shippingopen allclose all
Special provisions / remarks
- Remarks:
- Transport code: UN Class 8 Corrosives Packing Group 1 or 2.
Transport: Avoid crushing the containers.
SpecialProvisionsopen allclose all
Exposure controls / personal protection
Stability and reactivity
Danger other than fire: Hazardous reaction with acids and alcohols to generate
flammable vapours and ammonia.
Chemical reaction with water: The substance degrades rapidly in contact with moisture and
air to form hexamethyldisiloxane and ammonia.
Dust explosion determined by test: N
Disposal considerations
Industry - Possibility of recovery/recycling: Recovery for recycling is not possible.
Industry - Possibility of neutralisation: None known.
Industry - Possibility of destruction: controlled discharge: Contaminated containers or spillages of solutions mixed with
inert material (eg sand or soil) may be disposed of by
landfill at an authorised tip in accordance with local
regulations.
(A650)
Industry - Possibility of destruction - incineration: Incinerate at a suitable facility. Waste gas treatment
should be fitted to remove oxides of nitrogen and metal
oxide smoke.
(A661)
Industry - Possibility of destruction - water purification: Not recommended.
Public at large - Possibility of recovery/recycling: The substance will not enter the public domain.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
