Cyclohexyldimethoxymethylsilane

Flash point

Link to relevant study record(s)

Reference

Endpoint:

flash point of flammable liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1995-07-17 to 1995-08-21

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)

Version / remarks:

2nd ed 1983

Deviations:

no

Qualifier:

according to guideline

Guideline:

ASTM D3278 (Standard test methods for flash point of liquids by small scale closed-cup apparatus)

Version / remarks:

p1-7

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

equilibrium method closed cup

Flash point apparatus:

Setaflash apparatus

Key result

Flash point:

72 °C

Atm. press.:

102.06 kPa

Table 1: Flash point results

Temperature (°C)	Observations
20 (fresh sample)	No flash
25	No flash
30	No flash
35	No flash
40	No flash
45	No flash
50	No flash
55	No flash
60	No flash
65	No flash
70	No flash
70 (fresh sample)	No flash
75	A blue flash
70 (fresh sample)	No flash
71	No flash
72	A blue flash spreading fully across the sample cup
72 (fresh sample)	A blue flash spreading fully across the sample cup
72 (fresh sample)	A blue flash spreading fully across the sample cup
70 (fresh sample)	No flash

Atmospheric pressure = 102.06 kPa

Corrected flash point = 71.831°C

Interpretation of results:

GHS criteria not met

Conclusions:

A flash point value of 72 ± 2°C at 102.06 kPa has been determined for the substance using an appropriate test method and in compliance with GLP. The result is considered reliable.

Description of key information

Flash point: 72 ± 2°C at 102.06 kPa (ISO 3679)

Key value for chemical safety assessment

Flash point at 101 325 Pa:

72 °C

Additional information

Three reliable measured flash points are available for the submission substance. A measured flash point value of 72 ± 2°C at 102.06 kPa was determined for the substance using a rapid equilibrium closed-cup method in accordance with ISO 3679 Test Method and in compliance with GLP. The result is considered to be reliable and is selected as key study.

In other available sources which have been used to support the key study, flash point values of 76 - 77°C were determined for samples of the substance with different purities ranging from 99.1-99.7%. using a non-equilibrium closed-cup method. Also, a flash point value of 66.2°C at 1007 hPa was determined for the substance, however, full details are not available and as such the study is of a lower reliability.

Variations in the flash point values may be caused by variations in purity of the test substance and in the test method used. The key study is selected as the study most recently conducted and of the highest reliability.

A flash point of 72°C at 102.06 kPa and a measured boiling point of 203°C, indicate that the substance should not be classified for flammability according to the criteria of Regulation (EC) No. 1272/2008.