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Flash point

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Reference
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2004-11-29 to 2004-12-10
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Version / remarks:
1992
Deviations:
no
Qualifier:
according to
Guideline:
ASTM D93 (Standard test methods for flash point by pensky-martens closed cup tester)
Deviations:
no
GLP compliance:
yes
Type of method:
closed cup
Flash point apparatus:
Pensky-Martens apparatus
Dynamic viscosity of test material:
1.34 mPa*s at 25°C (predicted, US EPA T.E.S.T. v. 4.2; consensus model). The consensus model is based on the outcome of 5 different models (average), resulting in a range between 0.91 mPa*s and 2.04 mPa*s.
Key result
Flash point:
71.9 °C
Atm. press.:
1 013 hPa

Reference Substance: The average (n = 2) flash-point of the Reference Substance n-decane was 52.3 ± 0.2 °C, adjusted to 101.3 kPa. This flash-point was not significantly different from the reported (ASTM D 93) value of 53 ± 2 °C, indicating acceptable method accuracy.

Test Substance: The average (n = 2) observed flash-point of 1-chloro-2,3-dimethylbenzene was 71.9 ± 0.2 °C, adjusted to 101.3 kPa.

Results:

Dup.

Substance

Observed
Flashpoint
(°C)

Adjusted
Flashpoint
(°C)

 

 

 

Pres.
(kPa)

 

Average

Dev.

RD

 

 

 

 

(°C)

(°C)

 

 

Run 1

n-Decane

53.0

52.6

 

 

 

103.0

Run 2

n-Decane

52.5

52.1

52.3

0.2

0.5%

102.9

Run 1

test item

72.5

72.1

 

 

 

102.8

Run 2

test item

72.0

71.7

71.9

0.2

0.3%

102.6

Interpretation of results:
Category 4 (combustible liquids) based on GHS criteria
Conclusions:
Flash point (EU-method A.9): 71.9 °C at 1013 hPa
Executive summary:

The flash point for 1-chloro-2,3-dimethylbenzene was determined according to EU method A.9 and ASTM D 93 (Pensky-Martens Closed Cup) compliant with GLP.

The method was validated with reference substance n-decane:

The average (n = 2) observed flash-point of n-decane was 52.3 ± 0.2 °C, adjusted to 101.3 kPa, which was not significantly different from the reported (ASTM D 93) value of 53 ± 2 °C,

indicating acceptable method performance.

For the test Substance, the average (n = 2) observed flash-point was 71.9 ± 0.2 °C, adjusted to 101.3 kPa.

Description of key information

Flash point (EU-method A.9): 71.9 °C at 1013 hPa

Key value for chemical safety assessment

Flash point at 101 325 Pa:
71.9 °C

Additional information

The flash point for 1-chloro-2,3-dimethylbenzene was determined according to EU method A.9 and ASTM D 93 (Pensky-Martens Closed Cup) compliant with GLP.

The method was validated with reference substance n-decane:

The average (n = 2) observed flash-point of n-decane was 52.3 ± 0.2 °C, adjusted to 101.3 kPa, which was not significantly different from the reported (ASTM D 93) value of 53 ± 2 °C,

indicating acceptable method performance.

For the test Substance, the average (n = 2) observed flash-point was 71.9 ± 0.2 °C, adjusted to 101.3 kPa.