Colorless Monoclinic Crystal 99% Photo Grade Pentahydrate Sodium Thiosulphate

• CAS No.: 7772-98-7
• Formula: Na2s2o3
• EINECS: 231-867-5
• Certification: CCIC, CIQ, RoHS, ISO
• Purity: ≥99%
• Type: Sodium Sulfate
• Model NO.: Sodium Thiosulfate
• Appearance: Powder
• Grade Standard: Industrial Grade
• Product Name: Sodium Thiosulfate
• Other Name: Sodium Thiosulfate Pentahydrate
• Sodium Thiosulfate Formula: Na2s2o3
• Formula Weight: 158.108
• Boiling Point: 100 ºC
• Water-Solubility: Easy to Dissolve
• Density: 1.667 G/Cm³
• Type(Grade): Industry Grade
• Sodium Thiosulfate Appearance: Colorless Transparent Crystals
• Melting Point: 48 ºC
• Solubility: Soluble in Water
• Fe: 0.002% Max
• pH Value: 7.5
• Sodium Thiosulfate Purity: 99% Min
• Storage: Dry Place
• Transport Package: 25kg Bag, or 1000kg Jumbo Bag
• Specification: 25kg bag, or 1000kg jumbo bag
• Trademark: Kelai
• Origin: China
• HS Code: 2830909000
• Production Capacity: 100000mt Per Year

Product Description

Sodium Thiosulfate Pentahydrate 99%/Sodium Thiosulfate 99% MIN

1.Brief Description
Molecular formula: Na2S2O3
CAS: 7772-98-7
Appearance:White  powder
Properties:Single crystal is inclined white crytallized powder, a proportion of 1.667, soluble in water, alcohol, insoluble in air heating oxidation is decomposed into sodium and sulfur dioxide. In pure oxygen in combustion is generating sodium, method and sulfur.






2. Technical Data Sheet

Item	Photographic grade	Industrial grade	Anhydrous grade
Appearance	colorless transparent crystal	colorless transparent crystal	white powder
Assay	≥ 99.00%	≥ 98.5%	≥ 97.0%
Water Insoluble matter	≤ 0.01%	≤ 0.03%	≤ 0.03%
Sulfide	≤ 0.001%	≤ 0.003%	≤ 0.001%
Fe	≤ 0.001%	≤ 0.003%	≤ 0.005%
PH	6.5~9.5	6.5~9.5	6.5~9.5
Water solution reaction	in accordance with the test	in accordance with the test	----
Granularity(g/g)	12~16	---	----

 

3. Application 
(1). It is mainly used as fixing agent in photography industry.
(2). It is used as reducing agent of dichromate in tanning, neutralizer of nitrogen-containing tail gas, mordant, bleach of wheat straw and wool, and dechlorination agent in pulp bleaching. It is also used in the manufacture of tetraethyl lead, dye intermediates and silver extraction from ore.







4.Packing and Loading 
(1) . Packing :  25kg net/bag or customized bag .
(2) . Loading quantity : 25MT/20'container 




Any interest or demand, pls feel free to contact with us .