Sodium Thiosulfate or Sodium Thiosulphate Pentahydrate & Anhydrous Manufacturers Exporters |
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MSDS of Sodium Thiosulphate Thiosulfate Anhydrous Manufacturers
CAS: 10102-17-7 Pentahydrate & 7772-98-7 Anhydrous, Formula : Na2S2O3-5H2O Pentahydrate & Na2S2O3 Anhydrous, Molecular Weight: 248 Pentahydrate & 158 Anhydrous
Specifications of Sodium Thiosulphate Pentahydrate Technical Grade: Show/Hide Details
Appearance: Fine Crystalline
pH of 10% Aqueous Solution: 6.5 to 8
Assay: 98% minimum
Sulphites & Sulphates: 1% max
Heavy Metals: Less than 5 ppm
Iron: Less than 10 ppm
Specifications of Sodium Thiosulfate Pentahydrate Pure Grade: Show/Hide Details
Appearance: White Uniform Crystals (10 mesh)
pH of 10% Aqueous Solution: 6.5 to 8
Assay: 99% minimum
Sulphites & Sulphates: 0.2% max
Heavy Metals: Less than 5 ppm
Iron: Less than 10 ppm
Specifications of Sodium Thio Sulphate Pentahydrate Photographic Grade Pea Crystals P4 & P8: Show/Hide Details
Appearance: Cylindrical Pellets (5 mm to 10 mm) P4 and Cylindrical Pellets (2 mm to 5 mm) P8
pH of 10% Aqueous Solution: 6.5 to 8
Assay: 99.5% minimum
Sulphites & Sulphates: 0.2% max
Heavy Metals: Less than 3 ppm
Iron: Less than 5 ppm
Specifications of Sodium Thiosulfate Anhydrous Powder: Show/Hide Details
Formula: (Na2) S2O3
Molecular Weight: 158
Assay as (Na2)S2O3: 98 % Min.
Clarity of 10% solution in water: Clear
pH of 10 % Solution: 6.5 To 8.5
Description: White powder free from foreign particles.
Standard Packing: 25 Kg / 50 Kg/ 55lbs HMHDP bags placed in an HDPE bag or drum or in Jumbo bags or as required by the buyer.
Specifications of Sodium Thiosulfate Pentahydrate USP Grade: Show/Hide Details
Na2S2O3-5H2O -- 248.19
Sodium Thiosulfate USP
Contains not less than 99.0 percent and not more than 100.5 percent of Na2S2O3, calculated on the anhydrous basis.
Identification—
A: To a solution (1 in 10) add a few drops of iodine TS: the color is discharged.
B: A solution (1 in 10) responds to the tests for Sodium and for Thiosulfate.
Water— Dry about 1.0 g, accurately weighed, in vacuum at 40o to 45o for 16 hours: it loses between 32.0% and 37.0% of its weight.
Calcium— Dissolve 1 g Sodium Thiosulfate in 20 mL of water, and add a few mL of ammonium oxalate TS: no turbidity is produced.
Heavy metals—: the limit is 0.002%.
Specifications of Sodium Thiosulfate Pentahydrate BP Ph Eur Grade: Show/Hide Details
Na2S2O3-5H2O
Sodium Thiosulphate BP Ph Eur
DEFINITION
Content
99.0 per cent to 101.0 per cent of Na2S2O3-5H2O.
CHARACTERS
Appearance
Transparent, colourless crystals, efflorescent in dry air.
Solubility
Very soluble in water, practically insoluble in ethanol 96 per cent. It dissolves in its water of crystallization at about 49C.
IDENTIFICATION
A. It decolorizes iodinated potassium iodide solution.
B. To 0.5 ml of solution S (see Tests) add 0.5 ml of water R and 2 ml of silver nitrate solution. A white precipitate is formed which rapidly becomes yellowish and then black.
C. To 2.5 ml of solution S add 2.5 ml of water and 1 ml of hydrochloric acid. A precipitate of sulphur is formed and gas is evolved which gives a blue colour to starch iodate paper.
D. 1 ml of solution S gives reaction of sodium.
TESTS
Solution S
Dissolve 10.0 g in carbon dioxide-free water R prepared from distilled water R and dilute to 100 ml with the same solvent.
Appearance of solution
The freshly prepared solution is clear and colourless.
Dissolve 10.0 g in 50 ml of distilled water, add 1 ml of 0.1 M sodium hydroxide and dilute to 100 ml with the same solvent.
pH
6.0 to 8.4 for the freshly prepared solution S.
Sulphates and sulphites
Maximum 0.2 per cent.
Sulphides
To 10 ml of solution S add 0.05 ml of a freshly prepared 50 g/l solution of sodium nitroprusside. The solution does not become violet.
Heavy metals
Maximum 10 ppm.
ASSAY
Dissolve Sodium Thiosulfate 0.500 g in 20 ml of water and titrate with 0.05 M iodine, using 1 ml of starch solution, added towards the end of the titration, as indicator.
1 ml of 0.05 M iodine is equivalent to 24.82 mg of Na2S2O3,5H2O.
Specifications of Sodium Thiosulfate Pentahydrate FCC Food Grade US Food Chemical Codex: Show/Hide Details
Sodium Hyposulfite
Na2S2O3-5H2O Formula weight 248.19
DESCRIPTION
Sodium Thiosulfate or Sodium Thiosulphate occurs as large, colorless crystals or as a coarse, crystalline powder. It is deliquescent in moist air and effloresces in dry air at a temperature above 33°. Its solutions are neutral or faintly alkaline to litmus. One gram dissolves in 0.5 mL of water. It is insoluble in alcohol.
Function: Sequestrant; antioxidant.
REQUIREMENTS
Identification
A. Add a few drops of iodine TS to a 1:10 aqueous solution. The color disappears.
B. A 1:20 aqueous solution gives positive tests for Sodium and for Thiosulfate.
Assay: Not less than 99.0% and not more than 100.5% of Na2S2O3 after drying.
Lead: Not more than 2 mg/kg.
Selenium: Not more than 0.003%.
Water: Between 32.0% and 37.0%.
Specifications of Sodium Thiosulfate Pentahydrate ACS Grade Analytical Reagent Sodium Thiosulphate: Show/Hide Details
Sodium Thiosulfate Pentahydrate ACS, Sodium Thiosulfate ACS
Na2S2O3-5H2O
Formula Weight 248.19
CAS Number 10102-17-7
REQUIREMENTS
Assay: 99.5-101.0% Na2S2O3-5H2O
pH of a 5% solution: 6.0-8.4 at 25C
MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Nitrogen compounds (as N): 0.002%
Sulfate and sulfite (as SO4): 0.1%
Sulfide (S): Passes test.
CAS Number 10102-17-7 & 7772-98-7, Sodium Thiosulfate or Sodium Thiosulphate Pentahydrate Anhydrous Commercial Pure & IP BP Ph Eur USP ACS AR Analytical Reagent FCC Food grade manufacturers suppliers exporters at:
manufacturer supplier exporter
Aadhunik Industries
Ankleshwar Gujarat & Mumbai, India
TEL: (OFFICE) 91-22-65290104, 91-22-65290105.
e-mail: info@aadhunikindustries.com
Copyright and Usual Disclaimer is Applicable. 12-03-2026
Acetic Acid Glacial ------- Ammonium Bicarbonate ------- Aluminum Chloride ------- Aluminium Potassium Sulphate ------- Ammonium Carbonate ------- Ammonium Carbamate ------- Ammonium Chloride ------- Ammonium Persulfate------- Barium Chloride ------- Benzyl Alcohol ------- Benzoic Acid ------- Boric Acid ------- Borax ------- Calcium Chloride ------- Calcium Oxide ------- Calcium Hydroxide ------- Calcium Lactobionate ------- Calcium D Saccharate ------- Calcium Sulfate ------- Carbamide Peroxide ------- Chromic Chloride -------Copper Cupric Chloride ------- Copper Sulphate ------- Precipitated Coated & Directly Compressible Calcium Carbonate ------- Fumaric Acid ------- Ferric Chloride ------- Formaldehyde Solution ------- Lithium Carbonate ------- Magnesium Chloride ------- Magnesium Sulphate ------- Maleic Acid ------- Malic Acid ------- Manganese Chloride ------- Manganese Sulphate ------- Octyl Dodecanol ------- Oleic Acid ------- Phenyl Ethanol ------- Potassium Bromide ------- Potassium Chloride ------- Potassium Hydroxide Pellets ------- Potassium Monopersulfate ------- Potassium Phosphate Monobasic Dibasic Tribasic ------- Propylene Carbonate ------- Selenious Acid ------- Sodium Acetate ------- Sodium Diacetate ------- Sodium Hydroxide Pellets------- Sodium Thiosulfate ------- Sodium Formaldehyde Bisulfite ------- Sodium Perborate ------- Vanadyl Sulfate ------- Zinc Chloride