Best price/good quality supply 99.5% high purity API Sodium thiophosphate CAS:7772-98-7 USP,EP, factory of China CAS NO.7772-98-7

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Sodium thiophosphate
CAS:7772-98-7
Chinese name: Baking soda Haibo Sodium sulfite Anhydrous sodium thiosulfate
English name: Sodium subsulfite, Sodium thiosulfate, chlorine control, chlorine cure , anhydrous
Chemical formula: Na2S2O3
Molecular weight: 158.11
Boiling point: 100 ° C
Melting point: 48 ° C
Properties: monoclinic white crystal powder, specific gravity 1.667, soluble in water, insoluble in alcohol, oxidatively decomposed into sodium sulfate, sulfur dioxide and water by heating in air. Sodium sulfate, sodium sulfide and sulfur are produced by combustion under isolated air (oxygen).
Uses: mainly used in the photographic industry as a fixer. Secondly, it is used as a reducing agent for dichromate during tanning, a neutralizing agent for nitrogen-containing tail gas, a mordant, a bleaching agent for straw and wool, and a dechlorinating agent for pulp bleaching. It is also used in the manufacture of tetraethyl lead, dye intermediates, etc., and in silver ore extraction.
Process: sodium thiosulfate dehydration method. Anhydrous sodium thiosulfate is obtained by dissolving, filtering, concentrating and dehydrating sodium thiosulfate pentahydrate.
Packing: 40kg / bag
Storage and transportation precautions: should be stored in a cool and dry warehouse. Protect from light and seal, avoid exposure, moisture and rain during transportation.