Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16.04.2018 - 18.04.2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
no
GLP compliance:
no
Type of method:
effusion method: isothermal thermogravimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Vapour pressure
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
0 Pa

Any other information on results incl. tables

The value of logvT at 25 °C was calculated from linear regression relationship:

logvT.25°C = 10.418 - 5532.9× 3.35402×10-3

 

logvT at 25 °C is -8.139438

 

logpT,25°C was calculated from the relationship determined by measuring reference items:

logpT,25°C = 4.1212 + 1.1267 × logvT,25°C

 

logpT at 25 °C          -5.04950

pT at 25 °C                8.92×10-6Pa

Applicant's summary and conclusion

Conclusions:
The vapor pressure of beta-resorcylic acid at 25°C is 0,00000892 Pa.
Executive summary:

The vapour pressure of the test item 2,4-dihydroxybenzoic acid, is 8.92×10-6 Pa at 25 °C, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006).