Registration Dossier
Registration Dossier
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EC number: 200-891-8 | CAS number: 75-68-3
Endpoint summary
Administrative data
Description of key information
Additional information
1-Chloro-1,1-difluoroethane is a colourless gas with a slightly ethereal odour.
This substance has a melting point of -130.8ºC and a boiling point of -9.2ºC and its vapour pressure is 339kPa at 20°C (Handbook of environmental fate and exposure data for organic chemicals, 1990).
In accordance with column 2 of REACH Annex VII or with column 1 of REACH Annex IX and/or the REACH guidance on information requirements and chemical safety assessment (chapter R7.A), data on the particle size and the flash point are not relevant as the substance is a gas. An estimation based on calculation from the molecular weight and the Ideal Gas Laws gives a density of 0.0049 g/cm3.
The octanol/water partition coefficient (log Pow) is 2.05 (SRC KOWWIN v1.67, 2001), the water solubility is 1400 mg/l at 20ºC and 1900 mg/l at 25ºC (Handbook of environmental fate and exposure data for organic chemicals, 1990), and the substance remains undissociated in water as the substance contains no hydrolysable functionalities.
Based on its structure, 1-chloro-1,1-difluoroethane is not expected to be surface active.
The self-ignition temperature of the substance is 625ºC at 998 mbar (Cerchar, 1989) and its lower and upper flammability limits are 5.5% and 17.5% respectively (Cerchar, 1989). Thus 1-chloro-1,1-difluoroethane has to be classified as extremely flammable (F+, R12 according to EU Directive 67/548/EEC and H220 according to EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/20008).
As it is highly flammable the substance does not need to be tested for oxidising properties and as it is a gas testing on explosive properties is not required.
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