Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 May 2009 - 4 November 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: This study has been performed according to OECD and EC guidelines and according to GLP principles

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report Date:
2009

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: by loss of weight or by trapping vaporisate

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): Monochloroacetic acid (MCAA)
- Chemical name: 2-chloroacetic acid
- Molecular formula: C2H3O2Cl
- Molecular weight: 94.497
- Substance type: White flakes
- Physical state: solid
- Analytical purity: 99.73% w/w
- Purity test date: -
- Lot/batch No.: 08.07.315
- Expiration date of the lot/batch: 04 May 2010
- Stability under test conditions: Not indicated
- Storage condition of test material: At room temperature in the dark
- Other: -

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
2.14 Pa
Remarks on result:
other: vapour pressure below the melting point of the test substance
Temp.:
80 °C
Vapour pressure:
3 220 Pa
Remarks on result:
other: vapour pressure above the melting point of the test substance
Transition / decomposition
Transition / decomposition:
no

Applicant's summary and conclusion

Conclusions:
The isothermal thermogravimetric effusion method was chosen for the determination of the vapour pressure of Monochloroacetic acid (MCAA). The vapour pressure of the test substance at 20°C (293K) was 2.14 Pa = 0.0160 mm Hg. At 80°C a vapour pressure of 3.22 x 10E3 Pa = 24.2 mm Hg was obtained.