Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Additional information on environmental fate and behaviour

Administrative data

additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
other information
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
A computed value on the theoretical oxygen demand, and experimental values on total oxygen demand (TOD), chemical oxygen demand (COD, resulting from oxydation by potassium dichromate), biochemical oxygen demand (BOD) , and the removal of vinylbenzyl chloride from water by aeration are given. BOD values, when compared to the theoretical oxygen demand, or TOD, give an indication of the degradability of the compounds with the seed material (bacteria) obtained from a general wastewater treatment system. An additional aeration value denotes the disappearance of the compound from water after 4 hours aeration.

Data source

Reference Type:
other company data
Report date:

Materials and methods

Test guideline
no guideline available
GLP compliance:

Test material

Constituent 1
Chemical structure
Reference substance name:
EC Number:
EC Name:
Cas Number:
Molecular formula:
1-(chloromethyl)-3-ethenylbenzene; 1-(chloromethyl)-4-ethenylbenzene
Test material form:
Details on test material:
Typical concentration of main constituents (mixture of isomers): > 98%

Results and discussion

Any other information on results incl. tables

Theoretical oxygen demand









 Removed after aeration (%)
     5 days  10 days    
 2.36  2.26  0.16 0.58   2.54

Table: Experimentally determined and computed oxygen demand values of vinylbenzyl chloride, and percentage of substance removed after 4 hours of aeration: The theoretical oxygen demand, chemical oxygen demand (COD: dichromate), biochemical oxygen demand (BOD) and total oxygen demand (TOD) values are given as parts of oxygen demand per part of compound (pts/pt).

Applicant's summary and conclusion

Executive summary:

Using effluent from general wastewater treatment as the seed, a biochemical oxygen demand of 0.16 and 0.58 pts/pt (parts of oxygen demand per part of vinylbenzyl chloride) was determined after 5 and 10 days, respectively. The total oxygen demand was found to be 2.54 (pts/pt). 5% of the compound were removed after 4 hours of aeration. The results may suggest that vinylbenzyl chloride is not readily biodegradable.