Question: Classification of the fire hazard of sodium sulfide
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Sodium sulfide: (1) Anhydrous or with <30% crystalline water: Self-heating substances and mixtures, Category 1 acute toxicity – dermal, Category 3* skin corrosion/irritation, Category 1B severe eye damage/eye irritation, Category 1 hazard to aquatic life – acute hazard, Category 1
For impact explosions, sodium azide can serve as a reference; it is classified as Category A in 51283, as it releases the toxic gas hydrogen sulfide when in contact with water. Substances that are both flammable and explosive should also be considered Category A