4,8-dicyclohexyl-6-hydroxy-2,10-dimethyl-12H-dibenzo[d,g][1,3,2]dioxaphosphocin

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-06-10

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

yes

Remarks:

Thermogravimetric analysis (TGA) is used to determine selected characteristics of materials that exhibit either mass loss or gain due to decomposition.

Principles of method if other than guideline:

Thermogravimetric analysis according to OECD 104:
The method is based on the determination of accelerated evaporation rates for the test substance at elevated temperatures and ambient pressure using thermogravimetry. The evaporation rates vT result from exposing the selected compound to a slowly flowing inert gas atmosphere, and monitoring the weight loss at defined isothermal temperatures T in Kelvin over appropriate periods of time.

GLP compliance:

no

Type of method:

other: Thermogravimetric analysis

Key result

Decomposition:

yes

Decomp. temp.:

338.2 °C

Conclusions:

The boiling point of the test item (CAS 73912-21-7) was determined according to OECD 103 with accetable restrictions, using thermogravimetric analysis, which may be considered as a scientifically reasonable approach, and hence the results can be considered to be reliable. As the temperature increases, various components of the sample may vaporize or decompose and the weight percentage of each resulting mass change can be measured. Compliant to this method, the test item does not have a boiling point but decomposes. The onset temperature for decomposition is 338.2 °C.

Executive summary:

The boiling point of 4,8-dicyclohexyl-6-hydroxy-2,10-dimethyl-12Hdibenzo[ d,g][1,3,2]dioxaphosphocin (CAS 73912-21-7) was determined according to OECD 103, using thermogravimetric analysis. Test item (CAS 73912-21-7) does not have a boiling point but decomposes. The onset temperature for decomposition is 338.2 °C.

Description of key information

4,8-dicyclohexyl-6-hydroxy-2,10-dimethyl-12Hdibenzo[ d,g][1,3,2]dioxaphosphocin (CAS 73912-21-7) does not have a boiling point but decomposes. The onset temperature for decomposition is 338.2 °C.