Pentahydrate CAS Number 10102-17-7 & Anhydrous CAS Number 7772-98-7, Sodium Thiosulfate Anhydrous Pentahydrate BP IP USP Analytical Reagent FCC Food grade Manufacturers

Supplier, Manufacturer, Exporter of Sodium Thiosulfate Thiosulphate, Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance Food & Flavor chemicals, Reagent Grade Chemicals, Shale Gas Fracturing Chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, China, Germany, France, Italy, Portugal etc.

The products are offered as per required specifications and in correct shape and size in mm or meshs or microns as specified by the buyer. Orders of Small and Bulk quantities are served.

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Sodium thioulfate pentahydrate CAS Number 10102-17-7, EINECS EC Number 231-867-5, HS Code 283230**, Formula Na2S2O3-5H2O, Molecular Weight 248.17
Sodium thioulfate anhydrous CAS Number 7772-98-7 , EINECS EC Number 231-867-5, HS Code 283230**, Formula Na2S2O3, Molecular Weight 158.11

Muby Chemicals, established in 1976, is the pioneer manufacturer of Sodium Thiosulfate Pentahydrate or Sodium Thiosulphate Pentahydrate and various other chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India. Muby chemicals know about Sodium Thiosulfate Pentahydrate or Sodium Thiosulphate Pentahydrate, better than any other vendor in the world.

Sodium Thiosulfate USP Grade Specifications

Contains not less than 99.0 percent and not more than 100.5 percent of Na2S2O3, calculated on the anhydrous basis.

Packaging and storage: Preserve in tight containers.
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 40 o 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%.

Sodium Thiosulphate BP Ph Eur Grade Specifications

CHARACTERS
Appearance: Transparent, colorless 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.

Sodium Thiosulfate FCC Food Grade

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.

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%.

Sodium Thiosulfate Pentahydrate or Sodium Thiosulphate Analytical Reagent Grade

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.

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MUBY CHEMICALS
Ambernath Mumbai, Ankleshwar Gujarat, India
TEL: (OFFICE) +912223770100, +912223726950
Current Date Time in India GMT+5:30

USA, Canada, Mexico and other American
neighbouring buyers may
e-mail: us@mubychem.com
Call toll-free 1-877-682-9243 (1-877-MUBYCHEM)

Parameters	Specifications
Appearance	White Uniform Crystals (10 mesh or bigger as desired by the buyer)
pH of 10% Aqueous Solution	6.5 to 8
Assay	99.5% minimum
Sulphites & Sulphates	0.2% maximum
Heavy Metals	Less than 5 ppm
Iron	Less than 10 ppm

Formula	(Na2) S2O3
Molecular Weight	158
Assay as (Na2)S2O3	98 % Minimum
10% solution in water	Clear
pH of 10 % Solution	6.5 To 8.5
Description	White powder free from foreign particles.

Test	Specification
Description	It appears as white powder free from foreign particles.
Solubility 10% aqueous solution	Freely soluble in water.
Identification (A)Reaction of Sodium (B)Reaction of Thiosulphate	A solution responds to the test for Sodium and for Thiosulphate
Insoluble Matter	Not more than 0.25%
Calcium	Prescribed Test. No turbidity is produced.
pH	6 to 8.4
Sulphites and Sulphates	Maximum 0.5%
Heavy Metals	Maximum 0.001%
Sodium Sulphite	Maximum 0.2%
Iron as Fe	Not more than 0.001%
Residual Solvent	To meet the requirement
Assay	Not less than 99% and not more than 100.5% of Na2S2O3 on anhydrous basis.