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Description of key information

Tetrachloroethylene is a colourless liquid with a slightly ethereal odour.

 

Additional information

Tetrachloroethylene is a colourless liquid with a slightly ethereal odour and has a melting point of -22 °C (Merck Index, 1989) and a boiling point of 121.4 °C at 101.3245 kPa (CRC Handbook of Chemistry and Physics, 1994). The density of tetrachloroethylene at 25 ºC is 1.61 g/cm3 (CRC Handbook of Chemistry and Physics, 1994).

 

The vapour pressure of tetrachloroethylene is 2.5 kPa at 25 °C (CRC Handbook of Chemistry and Physics, 1994). The octanol/water partition coefficient (log Pow) is 2.53 at 25 °C (Banerjee, 1980; Veith, 1980), the water solubility is 150 mg/l at 25 ºC (CRC Handbook of Chemistry and Physics, 1994). The viscosity of the substance is 0.844 mPa s at 25 °C (CRC Handbook of Chemistry and Physics, 1994).

 

In accordance with column 2 of REACH Annex X, data on the particle size are not needed as the substance is a liquid. Based on its structure, tetrachloroethylene is not expected to be surface active. The substance remains undissociated in water as it does not contain chemical groups which are capable of dissociation. In accordance with column 1 of REACH Annex IX, the study is not required, as the stability of the substance is not considered to be critical. The substance is a chlorinated hydrocarbon. This kind of substances usually does not react with common organic solvents like alkanes, alcohols, ketones, aromatic hydrocarbons and halogenated hydrocarbons.

Tetrachloroethylene does not have a self-ignition temperature (CRC Handbook of Chemistry and Physics, 1994) and is non-flammable (Merck Index, 1989). It does not have pyrophoric properties and does not react with water. Based on this, the substance does not need to be classified as flammable according to EU Directive 67/584/EEC and EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008. The substance does not contain chemical groups associated with explosive or oxidizing properties, therefore classification for these hazards is not warranted according to EU Directive 67/584/EEC and EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.