Hexyl chloroformate

Endpoint summary

Additional information

Dissolved hexyl chloroformate is assessed to rapidly hydrolyse in contact with water to form hexanol (111 -27 -3), hydrogen chloride (CAS 7647-01-0) and carbon dioxide (CAS 124-38-9). Due to this rapid hydrolysis, the assessment of most environmental fate parameters for the parent compound in aqueous/moist environments is considered to be of low relevance. The parent substance hexyl chloroformate was found not to be readily biodegradable. The hydrolysis product hexanol is qualified as readily biodegradable whereas the concept of biodegradation does not apply to the inorganic degradation products. For the other environmental fate parameters estimates were made by means of EPISuite. For the two inorganic hydrolysis products no EPISuite calculation could be performed as inorganic substances are outside the applicability domain of EPISuite.

All available relevant environmental fate data is tabulated below.

Endpoint	Key value for assessment	Comments
Phototransformation in air:
- hexyl chloroformate	Half-life in air: ca. 52 hours	AOPWIN calculation
- hexanol	Half-life in air: ca. 40 hours	AOPWIN calculation
Biodegradation:
- hexyl chloroformate	Not readily biodegradable	Experimental result
- hexanol	Readily biodegradable	Experimental result
Bioaccumulation:
- hexanol	BCF = 10.15 L/kg	BCFBAF calculation
Adsorption/desorption:
- hexanol	Koc = 43.3 L/kg	KOCWIN (log Kow method)
Henry’s law constant:
- hexanol	HLC = 1.78 Pa·m³/mol	Bond Contribution Method