| post date: | oct 22,2021 |
| expiry date: | oct 22,2022 |
| detailed description: |
cas no. :7631-90-5
quantity: 1metric tons specs:99% price:300 usd metric tons payment method: tt,lc 1.chemical and physical properties: products name:sodium bisulfite molecular form:nahso3 molecular weight:104.06 cas no.:7631-90-5 einecs no.:231-548-0 h.s code:2832100000. sodium bisulfite is white monoclinic crystalline powder with sulfur dioxide odor; relative density: 1.48; very easily soluble in water; can be decomposed when heated; slightly soluble in ethanol; aqueous solution is acidic; has strong reducing property; can be oxidized in the air or loose sulfur dioxide. 2.usage: sodium bisulfite is used in the bleaching of cotton textiles; as reducing agent in dyes, paper-making, leather, chemical synthesis; in the manufacture of pharmaceutical intermediates, photographic developer, food bleacher, antiseptic and anti-oxidants. 3.specifications: sodium bisulfite standard:hg/t3814-2006 test item standard request. inspect result inspect conclusion appearance white crystalline powder conformed pass content (nahso3) % ≥99% 99.1% pass so2% 64%-67% 65% pass cl% 0.05 0.03 pass fe% ≤0.004% 0.002% pass water insoluble matter% ≤0.03% 0.01% pass heavy metal (pb)% ≤0.001% 0.0005% pass as% ≤0.0002% <0.0001% pass ph 4.0-5.0 4.3 pass 4.packing details: sodium bisulfite will be packed in n.w25kg plastic woven bag lined with pe liner,or 500kg/1000kg/1100kg/1200kg jumbo bag. 20mt-25mt will be loaded in 1*20’fcl container. 5.storage: sodium bisulfite should be stored in cool and dry place, avoid moisture and heat. no breakage, no mixed with oxidant and toxic matter. the storage period is 6 month since the production date. it should be transported by clean car, with covering matter, avoid raining. |
| cas registry number: | 7631-90-5 |
| synonyms: | ;sodium hydrogen sulfite;sodium bisulphite;sodium hydrogen sulfate; |
| molecular formula: | nahso3 |
| molecular weight: | 104.061 |
| molecular structure: | 
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| hazard symbols: | |
| risk codes: | r22:; r31:; |
| safety description: | s25:; s46:; |
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