Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
distribution modelling
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Internationally accepted method, EPI-Suite, EPA (USA) Acetyl chloride hydrolyses very fast to acetic acid & hydrochloric acid. Therefore, the calculated distribution parameters of the latter ought to be taken instead.

Data source

Reference
Reference Type:
other: calculation
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Model:
other: estimated by calculation
Calculation programme:
Calculation by EPI-Suite, EPA (USA) v3.20 / Fugacity_LEVEL3NT
Media:
air - biota - sediment(s) - soil - water

Test material

Constituent 1
Chemical structure
Reference substance name:
Acetyl chloride
EC Number:
200-865-6
EC Name:
Acetyl chloride
Cas Number:
75-36-5
Molecular formula:
C2H3ClO
IUPAC Name:
acetyl chloride

Results and discussion

Percent distribution in media

Air (%):
2.69
Water (%):
37.5
Soil (%):
61.6
Sediment (%):
0.06
Other distribution results:
Persistence time: 346 h = 14 d
Half lifes; Air: 347 h = 29 d; Water: 208 h = 9 d; Soil: 416 h = 17 d; Sediment: 1870 h = 78 d;
Volatilization from water; Half life vom Model river: 4538 h = 189.1 d; from Model Lake: 49,570 h = 2065 d = 5.7 years

Any other information on results incl. tables

Note: acetylchloride hydrolyses very rapidly which is not accounted for in EPIWIN.

So, acetyl chloride data were replaced by the values calculated for acetic acid (see above).

Applicant's summary and conclusion

Conclusions:
Acetylchloride hydrolyses very rapidly which is not accounted for in EPIWIN. Therefore, acetyl chloride data were replaced by the values calculated for acetic acid.
Persistence time: 346 h = 14 d
Half lifes; Air: 347 h = 29 d; Water: 208 h = 9 d; Soil: 416 h = 17 d; Sediment: 1870 h = 78 d;
Volatilization from water; Half life vom Model river: 4538 h = 189.1 d; from Model Lake: 49,570 h = 2065 d = 5.7 years
Executive summary:

Acetylchloride hydrolyses very rapidly which is not accounted for in EPIWIN. Therefore, acetyl chloride data were replaced by the values calculated for acetic acid.

Persistence time: 346 h = 14 d

Half lifes; Air: 347 h = 29 d; Water: 208 h = 9 d; Soil: 416 h = 17 d; Sediment: 1870 h = 78 d;

Volatilization from water; Half life vom Model river: 4538 h = 189.1 d; from Model Lake: 49,570 h = 2065 d = 5.7 years