Reaction mass of (1S,2E,4S,4aS,8aS)-2-ethylidene-7-methyl-1,2,3,4,4a,5,8,8a-octahydro-1,4-methanonaphthalene and (1S,2E,4S,4aS,8aS)-2-ethylidene-6-methyl-1,2,3,4,4a,5,8,8a-octahydro-1,4-methanonaphthalene

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14/11/1995-04/08/1997

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

The study was conducted according to an internationally recognised method, but without detailed documentation, and with technical inaccuracy (distant extrapolation). The substance identification is not complete (composition missing). Therefore validation applies with restrictions.

Qualifier:

according to guideline

Guideline:

other: OECD 104 (Vapour Pressure)

Version / remarks:

1981

GLP compliance:

no

Type of method:

dynamic method

Key result

Boiling pt.:

ca. 263.2 °C

Atm. press.:

760 mm Hg

The report contains graphical results, but detailed values are not provided.

The coefficients of the Antoine's equation are as follows:

VP(T) = 10exp{A-[B/(t+C)]} (mmHg)

A=5.7454;

B=1092.555;

C=118.228;

T = temperature in °C

Executive summary:

The boiling point of the test substance was determined from the vapour pressure study, measured according to OECD104 guideline, dynamic (ebulliometer) method.

Three measurements were recorded between ca 80 and 140°C. The coefficients of the non-linear Antoine's equation between VP and 1/T were calculated.

From this relationship, the extrapolated boiling point of the substance at normal atmospheric pressure is ca 263°C.

Description of key information

Boiling point extrapolated from VP = f(1/T) relationship.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

263 °C

Additional information

A reliable Vapour Pressure experimental study, conducted according to a recognized OECD method, is available, and suitable as the equation of VP = f(1/T) is provided. Despite restrictions due to distant extrapolation for normal atmP and substance identification, it is considered as a key study. The result is retained as key data.