Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Appearance

Chloroprene is a colourless liquid with a characteristic ethereal odour (Rossberg 2006).

Melting point

The melting point of chloroprene is reported to be -130°C (Rossberg 2006, CRC Handbook).

Boiling point

The boiling point of chloroprene is reported to be 59.4°C (Chemsafe 2008, Rossberg 2006, CRC Handbook).

Density

The density of chloroprene is reported to be 0.96 g/cm3 (Chemsafe 2008, CRC Handbook).

Granulometry

A waiver is proposed for this data requirement as the substance is a liquid.

Vapour pressure

The vapour pressure of chloroprene is reported to be 10.4 kPa at 0°C, 16.3 kPa at 10°C, 25.0 kPa at 20°C, 37.3 kPa at 30°C, 53.3 kPa at 40°C, 73.9 kPa at 50°C and 101.3 kPa at 59.4°C (Rossberg 2006).

Partition coefficient

The partition coefficient (log Kow) for chloroprene was predicted to be 2.5 by QSAR estimation based on KOWWIN (Currenta 2009).

Water solubility

The solubility of chloroprene in water is reported to be 256 mg/L at 20°C (Currenta 2009, Hamburger 1988).

Surface tension

A waiver is proposed for this data requirement...

Flash point

The flash point of chloroprene is reported to be -20°C (Chemsafe 2008).

Autoflammability

The autoflammability of chloroprene is reported to be 440°C (Chemsafe 2008).

Flammability

A waiver is proposed for this data requirement as the substance is a liquid.

Explosiveness

A waiver is proposed for this data requirement as the substance does not contain any chemical groups associated with explosive properties.

Oxidising properties

A waiver is proposed for this data requirement as the substance is incapable of reacting exothermically with combustible materials.

Stability in organic solvents

Chloroprene is reported to be stable in 1 -butanol 1:1 (v/v) at low temperature under absence of light over a test period of 2 days (Currenta 2010).

Dissociation constant

A waiver is proposed for this data requirement as the substance does not contain any ionisable functionality.

Viscosity

The viscosity of chloroprene is reported to be 0.71 mPa·s at 20 °C and 0.61 mPa·s at 40 °C (Currenta 2010).