Name: Sodium Thiosulfate
Alias: Sodium Hyposulfite; Soda; Hypo
English name: Sodium thiosulfate
CAS Number: 7772-98-7
Chemical formula: Na2S2O3
Molecular weight: 158.10800
Accurate quality: 157.90800
Density: 1.01 at 25 °C
Melting point: 48°C
Boiling point: 100°C
Stability: stable. Incompatible with strong acids, strong oxidants, iodine and mercury.
Storage conditions: 2-8ºC
use
Mainly used as a fixer in the photographic industry. Secondly, it is used as a reducing agent for dichromate during tanning, a neutralizer for nitrogenous exhaust gas, a mordant, a bleaching agent for straw and wool, and a dechlorination agent for bleaching pulp. It is also used in the manufacture of tetraethyl lead, dye intermediates, etc., and silver extraction from ore.
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