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Link to relevant study record(s)

Reference
Endpoint:
flammable gases
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 11 November 2016 to 17 March 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 1
Qualifier:
according to
Guideline:
other: ASTM Method E-681
Deviations:
yes
Remarks:
2.25 cylindrical stainless steel vessel was used to the test item properties. The study cannot be performed without this deviation due to the test item properties
GLP compliance:
yes
Test material information:
Composition 1
Specific details on test material used for the study:
- Analytical purity: 99.7%w/w
- Impurities (identity and concentrations): organic impurities 0.3% w/w
- Purity test date: 18 January 2017
- Lot/batch No.: 1507
Key result
Parameter:
lower explosion limit
Remarks on result:
not determinable
Key result
Parameter:
upper explosion limit
Remarks on result:
not determinable

The flammability limits have been tested with volume of test item between 0.5 to 30%.

In the trials performed, no increase of temperature higher or equal to 20°C has been observed. No increase of the initial pressure has been also observed.

Therefore, no flammability limits can be determined. The test item is then considered as a nonflammable gas.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
The test item is a nonflammable gas.
Executive summary:

The flammability limits of the test item were determined according to ASTM Method E-681 and under GLP.

A deviation from the guideline was observed during the test. Indeed, a 2.25 liter cylindrical stainless steel vessel has been used. Due to test item properties it was not possible to perform the study without this deviation.

Measurements of the flammability limits for gas/vapour mixture were conducted in a custom designed and fabricated by the testing laboratory.

A propagation of a flame occurred if the reaction produce at least a 7% rise in pressure over the initial absolute pressure and/or a 20°C temperature increase over the initial temperature.

Based on the results obtained, the test item is considered as a nonflammable gas according to GHS criteria.

Description of key information

The flammability of the test item was evaluated with a key study of reliability 1.

The study was performed according to ASTM Method E-681 and under GLP.

A deviation from the guideline was observed during the test. Indeed, a 2.25 liter cylindrical stainless steel vessel has been used. Due to test item properties it was not possible to perform the study without this deviation.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

Justification for classification or non-classification