Acetonitrile

Other distribution data

Administrative data

Endpoint:

other distribution data

Type of information:

calculation (if not (Q)SAR)

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

documentation insufficient for assessment

Remarks:

Limited information available

Data source

Reference

Reference 1

Reference Type:

study report

Title:

Unnamed

Year:

1981

Reference 2

Reference Type:

review article or handbook

Title:

Handbook of Environmental Fate and Exposure Data for Organic Chemicals.

Author:

Howard, P.H.

Year:

1993

Bibliographic source:

Volume IV. Solvents 2. Lewis Publishers, London.

Reference 3

Reference Type:

other company data

Title:

Unnamed

Year:

1992

Materials and methods

Principles of method if other than guideline:

No information available

GLP compliance:

not specified

Type of study:

volatility

Media:

water - air

Test material

Test material information

Constituent 1

Reference substance name:

Acetonitrile

EC Number:

200-835-2

EC Name:

Acetonitrile

Cas Number:

75-05-8

Molecular formula:

C2H3N

IUPAC Name:

acetonitrile

Test material form:

liquid

Results and discussion

Any other information on results incl. tables

Based on the value of Henry's Law Constant (2.6 x 10-5 m3 atm/mole) volatilization is probably significant for surface water, although the rate may be slow. A volatilization half-life of 21 hours would be predicted for a 1 m deep river flowing at 1 m/sec, if the wind speed was 3 m/sec. Volatilization would become particularly important as a loss process in shallow waters (Howard, 1993; IPCS, 1992). Volatilization half-lives (first order kinetics) have been predicted from Henry's Law Constant using the EXAMS computer simulation: pond water 11 days river water 6 days oligotrophic lake 34 days eutrophic lake 36 days (Burns et al. 1981).

Volatilization half-lives (first order kinetics) have been predicted from Henry's Law Constant using the EXAMS computer

simulation:

       pond water         11 days

       river water        6 days

       oligotrophic lake  34 days

       eutrophic lake     36 days

                           (Burns et al. 1981).

Applicant's summary and conclusion

Executive summary:

Based on the value of Henry's Law Constant (2.6 x 10-5 m3 atm/mole) volatilization is probably significant for surface water, although the rate may be slow. A volatilization half-life of 21 hours would be predicted for a 1 m deep river flowing at 1 m/sec, if the wind speed was 3 m/sec. Volatilization would become particularly important as a loss process in shallow waters (Howard, 1993; IPCS, 1992). Volatilization half-lives (first order kinetics) have been predicted from Henry's Law Constant using the EXAMS computer simulation: pond water 11 days river water 6 days oligotrophic lake 34 days eutrophic lake 36 days (Burns et al. 1981).