Registration Dossier
Registration Dossier
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EC number: 411-150-5 | CAS number: 29617-66-1 L-2-CHLOROPROPIONIC ACID; L-2-CHLORPROPIONSÄURE
Endpoint summary
Administrative data
Description of key information
Additional information
The substance, (s)-2 -chloropropionic acid, is the single enantiomeric form of 2 -chloropropionic acid.
Specific data for physical and chemical properties is not readily available for the single enantiomeric form, however data on the racemic form is.
It is a well known fact that enantiomers differ from each other solely by their rotation of plane polarised light. In an achiral environment they are identical in all their physical and chemical properties. Therefore, the readily available data for the racemic form is equally valid for the single enantiomeric form, (s)-2 -Chloropropionic acid.
All the physical and chemical data supplied in section 4 of the dossier is for the racemic substance 2 -chloropropionic acid with the exception of pH (section 4.20) which was measured on (s)-2 -chloropropionic acid.
Summary of Physico-Chemical Properties
Endpoint |
Result |
Appearance/Physical State /Colour |
State@ 1013hPa, 20oC: Liquid Colour: colourless to light yellow Odour: Pungent |
Melting point/freezing point |
Melting Point -13 oC |
Boiling Point |
185oC |
Density |
1.27 g/cm3 |
| Granulometry | Not required, substance is a liquid. |
| Vapour Pressure | 0.5 kPa at 20oC |
| Partition Coefficient | 0.82 at pH1 and 20.5oC. |
| Water Solubility | Miscible with water, nominal value of 100,000 mg/L assigned. |
| Surface Tension | 71.9 mN/m at 20oC and 1020mg/L |
| Flash Point | 107oC |
| Auto flammability | Auto-ignition temperature : 500oC. |
| Flammability | Non-flammable |
| Explosiveness | Non explosive |
| Oxidising properties | Not oxidising |
| pH (1% vol aqueous solution) | 1.83 |
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