99% Sodium thiosulfate Na2S2O2 Photo grade Industrial grade
1, Chemical name: Sodium thiosulfate
2, H.S code:28328000
3, Molecular formula: Na2S2O2@5H2O
4, Molecular weight: 248.17
5, Properties: Monoclinic crystal, Melting point: 40-45degree, Relative density: 1.729(17degree).
6, Packing: 25kg, 50kg plastic woven bag, or following your demand.
99% Sodium thiosulfate Na2S2O2 Photo grade Industrial grade Specification:
|Item||Photographic grade||Industrial grade||Anhydrous grade|
|Appearance||colorless transparent crystal||colorless transparent crystal||white powder|
|Water Insoluble matter||≤0.01%||≤0.03%||≤0.03%|
|Water solution reaction||in accordance with the test||in accordance with the test||—-|
Sodium thiosulfate is mainly used for fixing agent photography industry. Secondly Sodium thiosulfate as tanning time chromate salt reductants and nitrogen exhaust of neutralizers, salt, wheat and hair bleach and pulp bleaching agent of chlorine when. Sodium thiosulfate also used for tetraethyl lead, dye intermediates, etc and ore mention silver etc.