Sodium Thiosulfate Pentahydrate Crystals from China
Sodium thiosulfate pentahydrate crystals (Na2S2O3·5H2O), a separate chemically defined compound used in photography and water treatment. It falls under this tariff item as a thiosulphate of sodium.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the hydration state, as anhydrous and pentahydrate forms are both classified here but may have different purity specs
• Provide the exact chemical formula on the commercial invoice
• If used in photography, ensure it is not mixed with other fixer components