Sodium thiosulfate pentahydrate is a chemical compound primarily used as a photographic fixing agent to dissolve unexposed silver halides from photographic film and paper. It has the form of a salt hydrate and is also applied in various industrial processes such as pulp and paper processing, leather tanning, and metal extraction.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Calcium thiosulfate
Fungicide in crop protection
Magnesium thiosulfate
Soil amendment fertilizer
Potassium thiosulfate
Fertilizer and soil amendment
Sodium thiosulfate
Antichlor in paper pulp bleaching
Sodium selenite
Glass manufacturing and ceramic coloring
Lithium sulfate monohydrate
Lithium salt for battery materials
Sodium molybdate dihydrate
Corrosion inhibitor and micronutrient
Nitric oxide
Manufacture of nitric acid
The international HS code for SODIUM THIOSULFATE PENTAHYDRATE (CAS 10102-17-7) is 2832.30.
2832.30
2832 30 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane;pentahydrate
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O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
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