Methyl isothiocyanate

Henry's Law constant

Administrative data

Endpoint:

Henry's law constant

Type of information:

experimental study

Adequacy of study:

other information

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: 1d test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference

Reference Type:

publication

Title:

Unnamed

Year:

2007

Materials and methods

Test guideline

Guideline:

other:

Principles of method if other than guideline:

Henri's law coefficients were measured using a stripping method taken by Mackat et al.(1979)

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

methylisothiocyanate

IUPAC Name:

methylisothiocyanate

Constituent 2

Reference substance name:

Methyl isothiocyanate

EC Number:

209-132-5

EC Name:

Methyl isothiocyanate

Cas Number:

556-61-6

Molecular formula:

C2H3NS

IUPAC Name:

isothiocyanatomethane

Details on test material:

no data

Results and discussion

Henry's Law constant H

H:

0.011 - 0.11 other: atm.M-1

Temp.:

25 °C

Atm. press.:

1 013 hPa

Remarks on result:

other: in dezionised water

Any other information on results incl. tables

The Henri's law of MITC is measured at 25°C in dezionised water, in 0.1 M NaCl and 0.20 M NaCl, and in pH 4.0 and 83.0 buffered solution. The Henri's law of MITC did show dependance of ionic strength, increasing to 0.15 +/- 0.05 atm.M-1 at 0.2 M, but did not appeared to be pH-dependant.

Applicant's summary and conclusion

Conclusions:

Henri's law coefficients of MITC is 0.06+/- 0.05 atm.M-1 with a dependance with ionic strength, but not pH dependant.