|
|
Mubychem Group, established in
1976, is the pioneer manufacturer of Zinc Chloride, Ammonium
Chloride, Calcium Chloride, Potassium Chloride, Sodium Acetate,
Sodium Thiosulphate, Pharmaceutical, Fragrance & Flavor chemicals in
|
For Translating this page in your language use this translation tool (Refresh if the tool is not seen). |
Buy Sodium Metabisulfite; Door Delivery
Sodium Metabisulphite MSDS
British Pharmacopoeia 2009
Sodium Metabisulphite BP Sodium Metabisulfite BP
Sodium Metabisulphite BP
Sodium Pyrosulphite
Na2S2O5
Action and use
Antioxidant.
DEFINITION
Sodium metabisulphite also called sodium disulphite.
Content
95.0 per cent to 100.5 per cent.
CHARACTERS
Appearance
White or almost white, crystalline powder or colourless crystals.
Solubility
Freely soluble in water, slightly soluble in ethanol (96 per cent).
IDENTIFICATION
A. pH 3.5 to 5.0 for solution S.
B. To 0.4 ml of iodinated potassium iodide solution R add 8 ml of distilled water R and 1 ml of solution S diluted 1 to 10 in distilled water R. The solution is colourless and gives reaction of sulphate.
C. Solution S gives reaction of sodium.
TESTS Solution S
Dissolve 5.0 g in carbon dioxide-free water prepared from distilled water and dilute to 100 ml with the same solvent.
Appearance of solution
Solution S is clear and colourless.
pH
3.5 to 5.0 for solution S.
Thiosulphate
To 5 ml of solution S add 5 ml of dilute hydrochloric acid R. The solution remains clear for at least 15 min.
Arsenic
Maximum 5 ppm.
Iron
Maximum 20 ppm, determined on solution S.
Heavy metals
Maximum 20 ppm.
Sodium Metabisulfite USP-NF
Sodium Metabisulfite USP-NF
Na2S2O5 190.11
Disulfurous acid, disodium salt.
Disodium pyrosulfite [7681-57-4].
Sodium Metabisulfite contains an amount of Na2S2O5 equivalent to not less than 65.0 percent and not more than 67.4 percent of SO2.
Packaging and storage— Preserve in well-filled, tight containers, and avoid exposure to excessive heat.
Identification— A solution (1 in 20) responds to the tests for Sodium 191 and for Sulfite.
Limit of chloride— Dissolve 1.0 g in 10 mL of water, filter, if necessary, through a small chloride free filter, and add 6 mL of 30 percent hydrogen peroxide. Add 1 N sodium hydroxide until the solution is slightly alkaline to phenolphthalein, dilute with water to 100 mL, and mix. Dilute 2.0 mL of this solution with water to 20 mL, and add 1 mL of nitric acid and 1 mL of silver nitrate TS. Mix, allow to stand for 5 minutes protected from direct sunlight, and compare the turbidity, if any, with that produced from a 2-mL aliquot of a control (prepared by diluting 0.71 mL of 0.020 N hydrochloric acid to 100 mL) in an equal volume of total solution containing the quantities of reagents used in the test : any turbidity produced by the test specimen does not exceed that of the control preparation (0.05%).
Iron—: the limit is 0.002%.
Limit of thiosulfate— Mix 2.2 g with 10 mL of 1 N hydrochloric acid in a 50-mL beaker. Boil gently for 5 minutes, cool, and transfer to a small test tube. Any turbidity is not greater than that produced by 0.10 mL of 0.10 N sodium thiosulfate, similarly treated (0.05%).
Heavy metals—: the limit is 0.002%.
Sodium Metabisulfite FCC
Sodium Pyrosulfite
Na2S2O5 Formula wt 190.11
INS: 223 CAS: [7681-57-4]
DESCRIPTION
Sodium Metabisulfite occurs as colorless crystals or as a white to yellow, crystalline powder. It is freely soluble in water and slightly soluble in alcohol. Its solutions are acid to litmus.
Function Preservative; antioxidant.
REQUIREMENTS
Identification A 1:10 aqueous solution gives positive tests for Sodium and for Sulfite.
Assay Not less than 90.0% and not more than 100.5% of Na2S2O5.
Iron Not more than 10 mg/kg.
Lead Not more than 2 mg/kg.
Selenium Not more than 5 mg/kg.
Sodium
Metabisulfite
ACS
Reagent Chemicals
ACS Specifications
Sodium Metabisulfite
Disodium
Disulfite
Na2S2O5
Formula Wt 190.11
CAS Number 7681-57-4
REQUIREMENTS
|
Assay |
|
97.0%
Na2S2O5MAXIMUM ALLOWABLE
|
Insoluble matter |
0.005% |
|
Chloride (Cl) |
0.05% |
|
Thiosulfate (S2O3) |
0.05% |
|
Heavy metals (as Pb) |
0.001% |
|
Iron (Fe) |
0.002% |
Buy Sodium Metabisulfite; Door Delivery
Sodium Metabisulphite manufacturer
Sodium Metabisulfite manufacturer at:
MUBY CHEMICALS
S-8, SARIFA MANSION, 2ND FLANK ROAD, CHINCHBUNDER, MUMBAI 400009,
INDIA.
TEL: 91-22-23770100, 23726950, 23774610, 23723564. FAX: 91-22-23728264.
e-mail:
info@mubychem.com
Cell Call to Anmol: +91-9821870100 or Ambrish: +91-9821570100
Copyright
and Usual
Disclaimer
is Applicable.
Last
updated: 29 April, 2010.
|
Old Spice: Manufacturing since more than Three Decades: |
|||
|
Pharmaceuticals & Food Grade, IP BP USP FCC ACS Gr. of Chemicals mfd. by Anmol Chemicals: A.R. |
|||
|
Other Best Seller Products: |
|||
|
All Chemicals Also Offered in Small Packs by our Service Division |
|||