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Sodium Hydrosulfite: Sodium Hydrosulfite (powder type） Chemical Formula：Na2S2O4 CAS No.:********6 Appearance:Free-flowing white crystalline powder Odor:Odorless or with a slight odor of sulfur dioxide Pacgage:*0kg iron drums with double polyethylene liners. Product Specification : Na2S2O4 *0% Iron（Fe） *0ppm zinc（Zn） 1ppm solution appearance clear water insolubles 0.*5% shelf life（months） *2 In addition to powder sodium hydrosulfite, we can also supply fine quality solution sodium hydrosulfite to end-users in pulp & paper, textile and kaolin clay industries by dissolving the powder hydro. Characteristics of our solution sodium hydrosulfite: ◎higher solution strength (Na2S2O4:around **5g/L) than other solution type sodium hydrosulfite. ◎can be transported and stored under normal temperature(***5℃)without needing refrigeration. ◎Applica： It is widely used in the textile industry for vat dyeing , reduction cleaning , printing and stripping , textile materials bleaching .It is also used in bleaching paper pulps , especially mechanical pulp;bleaching kaolin clay and foodstuffs .As a reducing agent , it is used in organic synthesizing . Specific hazards: Our sodium hydrosulfite is highly stable when stored in dry closed containers.however, all sodium hydrosulfite by nature is a very reactive chemical which can decompose when exposed to air and moisture or contacts with small quantities of water .decomposition will result in spontaneously ignition and liberating violently with oxidants which will lead to combustion or explosion Extinguishing Media: a large amount of water. Extinguish Method : Usingsufficient amount of water drown the product completely. other extinguishing media may not stop decompositionthoroughly.