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Description of key information

From the experimental values of flammability, 4,4'-dinitrostilbene-2,2'-disulphonic acid ignited when the flame of bunsen burner having temperature of 950 degC was brought in contact with it. 

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

From the experimental values of flammability, 4,4'-dinitrostilbene-2,2'-disulphonic acid ignited when the flame of bunsen burner having temperature of 950 degC was brought in contact with it. Thus it can be concluded that 4,4'-dinitrostilbene-2,2'-disulphonic acid is flammable only at high temperature of about 950 degC. However since such high temperatures are not found under normal circumstances of transportation and use, 4,4'-dinitrostilbene-2,2'-disulphonic acid was considered non-flammable for chemical safety assessment.

Justification for classification or non-classification

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