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EC number: 200-864-0
CAS number: 75-35-4
The HLC of 1,1-dichloroethylene has been calculated according to the equation R16-4 of ECHA guidance.
The Henry's Law constant of 1,1
-dichloroethene has been calculated according to the equation R16 -4 of
the guidance on information requirements and chemical safety assessment
- chapter R16: environmental exposure assessment (ECHA 2012).
The equation used is the following :
HENRY = ( VP x MOLW ) / SOL
VP = 66340 Pa at 20°C
MOLW = 96.94 g/mol
SOL = 2500 mg/L at 20°C.
The Henry's Law Constant has been calculated
to be 2572 Pa.m3/mol (corresponding to 2.5 atm.m3/mol). Therefore, 1,1
-dichloroethylene is considered as highly volatile from water at 20°C.
Published data from handbook and HENRYWIN
support this high volatility.
Additionally, data on the half-life of
volatilisation of 1,1 -dichloroethene from water support this high HLC
value as listed below :
- t1/2 = 27 min at 20°C (Dilling, 1977)
- t1/2 = 1.03h from river and 93.8h from
lake (calculation of Episuite)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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