Sodium Thiosulphate 99%, pentahydrate
Sodium thiosulfate (Na2S2O3), also spelled sodium thiosulphate, is a colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3•5H2O, an efflorescent, monoclinic crystalline substance also called sodium hyposulfite or “hypo.”
Specification:
Inspection Standard: HG/T 2328-2006.
ANALYSIS ITEMS | SPECIFICATION | RESULTS | ||
PREMIUM GRADE | FIRST GRADE | |||
PURITY (Na2S2O3·5H2O) | % ≥ | 99 | 98 | 99.15 |
PH VALUE (200 g/l liquor) | % ≤ | 6.5-9.5 | 7.5 | |
SULPHIDE MASS FRACTION (basis as S) | % ≤ | 0.001 | 0.003 | 0.0009 |
MATTER INSOLUBLE IN WATER | % ≤ | 0.01 | 0.03 | 0.01 |
IRON MASS FRACTION (basis as Fe) | % ≤ | 0.002 | 0.003 | 0.0018 |
APPEARANCE | CLEAR MONOCLINIC CRYSTAL | |||
CONCLUSION | PREMIUM GRADE |
General Use:
Its major use is in photography for dissolving silver halides from photographic emulsions;Sodium thiosulfate is also used in the tanning of leather; in bacteriological water assessment; and in treating cyanide poisoning; for automatic hand warmers.
Packing:
25/50kg woven PP bags with PE inner, or 1MT Jumbo bags.
Shipment time:
About 15days after payment receipt.
Payment terms:
by L/C or by T/T.
Please do not hesitate to contact with us for more details.
Our company is specialized in manufacture and export for chemicals, Sodium Thiosulfate is our main item, please contact us, if you take an interest.
P&B white big crystals Sodium Thiosulphate(Sodium Hyposulfite),pentahydrate 99% purity