Potassium thiosulfate CAS 10294-66-3
Chemical name:Potassium thiosulfate
Synonymous names:
potassium thiosulfate
POTASSIUM HYPOSULFITE
POTASSIUM THIOSULFATE
CAS No: 10294-66-3
EINECS : 233-666-8
Molecular formula: H3KO3S2
Molecular weight:154.24
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Structural formula:
Product Description:
Potassium thiosulfate solution:
FSCI-Item |
Results |
Appearance |
Colorless transparent liquid |
Content (K2S2O3),% |
50.0 |
Potassium oxide (K2O), % |
25.0 Min |
Total sulfur (in S), % |
17.0 Min |
Water insoluble matter, % |
0.05 Max |
Sulfide (Na2S), % |
0.005 Max |
Iron, % |
0.05 Max |
pH value (20℃) |
7.0-9.0 |
Sulfate, % |
0.50 Max |
Density (20℃) |
1.470-1.550 |
Potassium thiosulfate solids:
FSCI-Item |
Specifications |
Results |
K2S202H20 (g100g) |
≥96 |
98.13 |
Appearance |
White powder |
White powder |
K2O content (glOg)S |
≥44 |
44.98 |
Content (g/ 100g) |
≥30 |
30.53 |
Sulfate (calculated as SO4) g/ 100g) |
≤4 |
0.3 |
Ph-valuxc ( 10% aqueous solution) |
6.0-9.0 |
7.1 |
Fe(g/00g) |
≤400 |
11 |
Properties and Usage:
1. Fertilizer additives in the agricultural field: Potassium thiosulfate, as an important component of liquid fertilizer, can provide crops with essential sulfur and potassium nutrients. Sulfur is an important element for promoting crop growth and increasing yields, while potassium enhances crop resistance to drought and pests.
2. Optical and photographic fixatives: In traditional black and white photography, potassium thiosulfate is used as a fixative to terminate the film and paper development process and remove unreacted silver halide to prevent further darkening and fading of the image.
3. Water treatment: Potassium thiosulfate can be used as a precipitant in water treatment, especially for removing heavy metals from water bodies, such as reducing toxic hexavalent chromium to harmless trivalent chromium. In drinking water or wastewater treatment, potassium thiosulfate is used to remove excess chlorine
4. Chemical synthesis: Potassium thiosulfate can be used as a reducing agent and oxidizing agent in the chemical industry, and plays a key role in the synthesis of certain organic compounds.
5. Metal cleaner: Used to clean and treat metal surfaces to improve their finish and corrosion resistance.
6. Electroplating solution: used in silver plating process to improve the uniformity and adhesion of the electroplated layer.
Storage and transportation:
Store in a cool, ventilated warehouse. Keep away from fire and heat. Should be stored separately from acids, do not mix storage. Storage areas should be equipped with suitable materials to contain leaks.
Packaging specifications:
Net weight 25kg/bag, or customized packing according to customers' requirements.