Registration Dossier

Administrative data

Endpoint:
other distribution data
Type of information:
(Q)SAR
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
results derived from a (Q)SAR model, with limited documentation / justification

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2008
Report Date:
2008

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Estimation of volatilization from water based on a calculated HLC.
GLP compliance:
no
Type of study:
volatility
Media:
water - air

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid
Details on test material:
CAS Number: 107-88-0
SMILES : OCCC(O)C
CHEM : 1,3-Butanediol
MOL FOR: C4 H10 O2
MOL WT : 90.12

Results and discussion

Any other information on results incl. tables

Henry's Law Constant (HLC) at 25 °C: 0.0233 Pa*m³/mol

Using this HLC and the conditions indicated below the following half-lives for volatilization from rivers and lakes were calculated:

 

River 

Lake

Water depth (m)

1

1

Wind velocity (m/sec)

5

0.5

Current velocity (m/sec)

1

0.05

Half-life (hours)

2418

2.645E04

Half-life (days )

100.7

1102

Applicant's summary and conclusion

Conclusions:
Using a calculated HLC of 0.0233 Pa*m³/mol at 25 °C, volatilization half-lives of 101 and 1102 days were estimated for a model river and a model lake, respectively.