Benzyltris(dimethylaminato)phosphorus(1+) chloride

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Read across from structural analogue. The Kation is the same, only the inorganic anion is different.

Justification for type of information:

An experimental derived value is available for a surrogate material. The difference between the materials is only the inorganic anion (BF4- vs. Cl-). The kation is the same in both substances, for which reason the influence of the kation on the properties is the same in both molecules. So only the anion could cause a difference in the properties. A comparison of Sodium chloride and sodium tetrafluoroborate indicates, that the chlorid anion increases the melting point and the boiling point compared with the BF4-anion. Therefore it can be concluded, that the vapour pressure of the substance in this registration is likely to be lower than of the testet surrogate. This information is sufficient for a risk assessment.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

Benzyltris(dimethylaminato)phosphorus(1+) tetrafluoroborate(1-)

EC Number:

302-080-5

EC Name:

Benzyltris(dimethylaminato)phosphorus(1+) tetrafluoroborate(1-)

Cas Number:

94088-77-4

Molecular formula:

C13H25BF4N3P

IUPAC Name:

tetrafluoroborato benzyl[tris(dimethylamino)]phosphonium

Test material form:

solid: crystalline

Results and discussion

Vapour pressure

Vapour pressure 1

Key result

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

< 0.001 Pa

Vapour pressure 2

Key result

Test no.:

#2

Temp.:

25 °C

Vapour pressure:

< 0.001 Pa

Vapour pressure 3

Key result

Test no.:

#3

Temp.:

50 °C

Vapour pressure:

< 0.001 Pa

Vapour pressure 4

Key result

Test no.:

#4

Temp.:

179 °C

Vapour pressure:

< 0.001 Pa

Applicant's summary and conclusion

Conclusions:

The vapour pressures of the test item Tecnoflon BA 104 cannot be interpolated and extrapolated for the temperatures 20, 25 and 50 °C, according to Regulation EC No. 440/2008 Method A.4. Vapour Pressure and OECD Test Guideline 104 (2006). The vapour pressure can only be estimated to be below the detection limit of the apparatus:
Temperature / °C Vapour pressure / Pa
20 <10-3
25 <10-3
50 <10-3