Sodium dithionite (Sodium hydrosulphite) L.R.

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Chemical Information

FormulaNa2S2O4
Molecular Weight174.11
Assay(iodometric) 85% Na2S2O4
Risk7,22,31
Safety26,28
First AidStd
SpillageF
Disposal1,9
Un1384
Class4.2

Hazard Phrases

EUH031Contact with acids liberates toxic gas
H251Self heating; may catch fire
H302Harmful if swallowed
P233Keep container tightly closed
P235Keep cool
P301 + P312If SWALLOWED: Immediately call a POISON CENTRE or doctor/physician. If you feel unwell.

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Hazard keyword: DANGER