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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
according to EU Method A.4
GLP compliance:
no
Type of method:
effusion method: Knudsen cell
Specific details on test material used for the study:
Batch number: N6A3l
Expiry date: 04 August 2022
Key result
Test no.:
#1
Temp.:
ca. 45 °C
Vapour pressure:
ca. 0.018 Pa
Key result
Test no.:
#2
Temp.:
ca. 60 °C
Vapour pressure:
ca. 0.119 Pa
Key result
Test no.:
#3
Temp.:
ca. 75 °C
Vapour pressure:
ca. 0.596 Pa
Conclusions:
For the test substance 5-Methyl-1H-benzotroazole, the following vapour pressures at 20°C and at 25°C were calculated from the regression equation:
Vapour pressure at 20°C: 5.85*10E-4 Pa
Vapour pressure at 25°C: 1.22*10E-3 Pa

Description of key information

Key value for chemical safety assessment

Vapour pressure:
0.001 Pa
at the temperature of:
25 °C

Additional information