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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Diss Factsheets
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EC number: 231-959-5 | CAS number: 7782-50-5
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Guidance on Safe Use
Administrative data
First-aid measures
Inhalation:- Remove the subject from the contaminated areas soon as possible: transport him/her lying down with the head higher than the body, to a quiet, uncontaminated and well-ventilated location.- Oxygen or cardiopulmonary resuscitation if necessary. - Consult with a physician immediately in all cases. - Take to hospital immediately. - Keep warm.Eyes contact:- Flush eyes as soon as possible it running water for 15 minutes while keeping the eyelids wide open. - In the case of difficulty of opening the lids, administer analgesic ey wash (oxybuprocaine). - Consult with an ophthalmologist and physician immediately in all cases. - Take to hospital immediately.Skin contact:- Immediately bring the clothed subject under shower. - Remove contaminated shoes, socks and clothing; wash the affected with running water. - Consult with a physician immediately in all cases. - Keep warm (blanket), provide clean clothing.Ingestion:- Risk not possible, chlorine is a gas.
Fire-fighting measures
Not explosive. Not auto-flammable. Not flammable. The product itself will not burn. If anything, packaging may be involved in a fire use CO2, dry chemical powders or alcohol resistant foam. If water is used, contain run-off.Suitable extinguishing media:- In case of fire in close proximity, all means of extinguishing are acceptable.Unsuitable extinguishing media:- No restrictionSpecial exposure hazards:- Non-combustible. Contact with flammables may cause fire or explosions. - Contact with organics may cause fire or violent explosions. - Contact with minerals may cause fire or violent explosions. Protective measures in case of intervention:- Evacuate all non-essential personnel. - Intervention only by capable personnel who are trained and aware of the hazards of the product. - In all cases wear self contained breathing apparatus. - When intervention in close proximity wear full protective acid resistant suit. - After intervention, proceed to clean the equipment (take a shower, remove clothing carefully, clean and check).Other precautions:- If safe to do so, remove the exposed containers, or cool with large quantities of water. - Approach form upwind. - Never spray onto spillage or liquid gas. - Depending upon the wind direction, warn people off danger of intoxication, get doors and windows closed and ventilation stopped. - Use a explosimeter/gas detector/ oxygen analyser to determine the areas of danger.
Accidental release measures
Personal precautions:- Follow the protective measures given in the fire fighting and exposure controls/personal protection sections- Evacuate or shelter people depending upon the gravity of the situation (consult an expert/or respect a radius of 500 m).- Advice people to take refuge in upper floors and closed rooms and wait for instructions.- If safe to do so, without over exposing anyone, try to stop the leak- Approach from upwind- Disperse gas7vapours with water spray.- Avoid spraying the leak source.- Isolate the area- Cover the speading liquid with foam in order to slow down the evaporation- In case of leaking container, try to reposition it to get the leak in gaseous phaseEnvironmental precautions- Immediately notify the appropriate authorities in case of as spill. - Do not discharge into environment (sewers, rivers, soil,…)Methods for cleaning up- If possible, dam large quantities of liquid with sand or earth.
Handling and storage
Handling:- Carry out all operations in closed piping circuits and equipment - Operate in a well-ventilated area. - Clean and dry piping circuits and equipment before any operations. - Use only equipment and materials which are compatible with the product.- Keep away from reactive products (materials to avoid: reducing agents, combustible materials, metals in powder, acetylene, hydrogen, ammonia, hydrocarbons and organic materials). - Prevent all contacts with organics.- Avoid contact with water or humidity. Storage:- Store in a ventilated, cool area. - Protect from direct sunlight. - Keep away from reactive products (materials to avoid: reducing agents, combustible materials, metals in powder, acetylene, hydrogen, ammonia, hydrocarbons and organic materials). - Do not store in confined space - The containers must be used exclusively for chlorine. - Containment bund around storage containers and transfer installation. - For bulk storage, consult the producer. - Regularly check the conditions and temperature of the containers. - Storage temperature < 50 °C.Specific use(s)- For any particular use, please contact the supplierPackaging- SteelOther precautions- Provide tight electrical equipment well protected against corrosion- Atmospheric emissions must be avoided- Warn people about the dangers of the product- Follow the protective measures given in the exposure controls/personal protection section- In industrial installations, apply the rules for the prevention of major accidents (consult an expert).
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- 1017
Shipping information
- Chemical name:
- Chlorine
- Language:
- English
- Labels:
- T, N2.3 + 5. 1 + 8
SpecialProvisionsopen allclose all
Shippingopen allclose all
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Marine transport (UN RTDG/IMDG)
- UN number:
- 1017
Shipping information
- Chemical name:
- Chlorine
- Labels:
- T, NHazard lable: TOXIC GAS + CORROSIVE + MARINE POLLUTANT
- Marine pollutant
Remarksopen allclose all
Air transport (UN RTDG/ICAO/IATA)
- UN number:
- 1017
Shipping information
- Chemical name:
- Chlorine
- Labels:
- T, N
Remarksopen allclose all
Additional transport information
Additional information
- Special provisions / remarks / other:
- UN Number 1017IATA Class:FORBIDDENPSN: ChlorineIMDG Class:2.3Subsidiary risk:CORROSIVEHazard label:toxic gas + corrosive+ marine pollutantPlacard:1017EmS:F-C, S-UIMDG Name: CHLORINEADR/ADNR Class2Subsidiary risk:8Hazard label:2.3 + 5.1 + 8Placard:265/1017ADR/RID Name: CHLORINERID Class:2Subsidiary risk:8Hazard label:2.3 + 5.1 + 8Placard:265/1017LQ – 0 and E-0 are appropriate
Exposure controls / personal protection
Exposure limit valuesChlorineTLV (ACGIH-USA) 2004TWA = 0.5 ppmTWA = 1.5 mg/m3STEL = 1 ppmSTEL = 2.9 mg/m3Exposure controls- Premises ventilation- Follow protective measures- Detection of small leak with ammoniaOccupational exposure controlsRespiratory protection- In case of emissions, face mask with type B cartrige- Self-contained breathing apparatus in medium confinement/insufficient oxygen/in case of large uncontrolled emissions/in all circumstances when mask and cartridge do not give adequate protection.- Use only respiratory protection that confirms to international/ national standardsHand protection- Protective gloves - chemical resistant- Recommended materials: Neoprene- Non-recommended materials: PVC, polyethyleneEye protection:- Wear protective goggles for all industrial operations.- If risk of splashing, chemical proof goggles/face shieldSkin protection- Overalls- Apron/boots of neoprene if risk of splashingOther precautions- Shower and eye wash stations.- Take off contaminated clothing immediately after work- Consult the industrial hygienist or the safety manager for the selection of personal protective equipment suitable for the working conditions.Environmental exposure controls- Respect local/federal and national regulations for aqueous emissions.
Stability and reactivity
Conditions to aviod:- MoistureMaterials to avoid- React with most of materials, in particular:- Reducing agents- Combustible materials- Some metals in powder- Acetylene- Hydrogen- Ammonia- Hydrocarbons- Organic materialsHazardous decomposition products- NegligibleOther information- Extremely reactive products described above: spontaneous ignition or explosion- Violent reaction with dry titane- Corrosive action on some metals when moisture- The product -liquid form- is not compatible with titane, ebonite, rubbers, pVC, polyethylene and polypropylene (use resilient stainless at 40°C)
Disposal considerations
Waste treatment- Dispose in compliance with local/federal and national regulations.- Absorb the product in an alkaline solution (caustic soda or sodium carbonate).- Reduce the product with sulfite, pyrosulfite or alkaline thiosulfate.Packaging treatment:- To avoid treatments, as far as possible, use dedicated containers.- Do not rinse the dedicated containers.
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.