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GHS Category--Oxidizing Liquids

Posted Date:2022/7/29

GHS Definition:

Oxidizing liquids are liquids that are not necessarily flammable themselves, but generally produce oxygen that causes or contributes to the combustion of other substances.

Oxidizing liquid standard:

Category

Standard

1

Any substance or mixture, which is tested by mixing the substance (or mixture) with cellulose in a ratio of 1:1 by mass, can spontaneously ignite; or after the substance and cellulose are mixed in a ratio of 1:1 by mass, the average pressure rise time is less than Average pressure rise time after mixing 50% perchloric acid and cellulose in a ratio of 1:1 by mass;

2

Any substance or mixture, which is tested by mixing the substance (or mixture) and cellulose in a ratio of 1:1 by mass, shows an average pressure rise time less than or equal to the ratio of 40% aqueous sodium chlorate solution and cellulose in a ratio of 1:1 by mass Average pressure rise time after proportional mixing; and does not meet the criteria for Category 1;

3

Any substance or mixture that is tested by mixing the substance (or mixture) with cellulose in a ratio of 1:1 by mass and showing an average pressure rise time less than or equal to 65% aqueous nitric acid and cellulose in a ratio of 1:1 by mass The mean pressure rise time after, and does not meet the criteria for categories 1 and 2

Examples of oxidizing liquids:

▪Perchloric acid

▪Perchloric acid

▪Perchloric acetic anhydride solution

▪Lithium peroxide

▪Magnesium peroxide

▪Calcium chlorate solution

▪Potassium chlorate solution

Labeling and classification of oxidizing liquids:

Classification

Label

Hazard statement code

Hazard category

Hazard classification

Pictograms

Signal word

Hazard statement

GHS

United Nations Model Regulations

Oxidizing liquid

1

Danger

May cause fire or explosion; strong oxidizer

H271

    2

Danger

May intensify combustion; oxidizer

H272

3

Warn

May intensify combustion; oxidizer

H272