Disodium disulphite

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2005-08-31 to 2005-08-31

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test procedure:

burning rate test: preliminary screening test

Burning time:

0 s

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Two preliminary tests were performed: the same sample behaviour was observed on each occasion. The test article did not ignite and no melting transition was observed when the Bunsen burner flame came closer.

Since the test article did not propagate combustion, no further testing was required.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

From the experimental data obtained, it can be concluded that the sample of Sodium metabisulphite is not flammable, according to the guideline in Official Journal L 283 A.10.

Executive summary:

The flammability of Sodium metabisulphite was determined according to OECD guideline method.

Two preliminary tests were performed: the same sample behaviour was observed on each occasion. The test article did not ignite and no melting transition was observed when the Bunsen burner flame came closer. Since the test article did not propagate combustion, no further testing was required.

From the experimental data obtained, it can be concluded that the sample of Sodium metabisulphite is not flammable, according to the guideline in Official Journal L 283 A.10.

Reference 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be soluble in water to form a stable mixture

Reference 3

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Description of key information

Disodium disulfite is non-combustible, does not emmit flammable gases in contact with water and has no pyrophoric properties.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

One study report is available. The study was conducted according to GLP standards. The flammability of disodium disulfite was determined according to EU guideline method. Two preliminary tests were performed: the same sample behaviour was observed on each occasion. The test article did not ignite and no melting transition was observed when the Bunsen burner flame came closer. Since the test article did not propagate combustion, no further testing was required. From the experimental data obtained, it can be concluded that the sample of sodium metabisulphite is not flammable, according to the guideline in Official Journal L 283 A.10.

Justification for classification or non-classification

Based on experimental results, disodium disulfite does not need to be classified according to Regulation (EC) No. 1272/2008 (CLP Regulation).