Muby chemicals, is the flagship company in Mubychem Group, established in 1976, It has several manufacturing units in its wings, making Inorganic Chemicals Pharmaceutical Excipients, Fragrances & Flavour Chemicals in India. Mubychem Group has manufacturing facilities spread across Western India and sales purchase agents in several countries. The associated manufacturing units are accredited with certifications like FDA) GMP Approval, ISO-9001:2008 & ISO-22000:2005 Certification, "REACH" Pre-registration, Kosher, Halal & HACCP Certification.
Selenious acid Pure & USP Grade Manufacturers
Selenious Acid USP Grade
H2SeO3 -- 128.97
Selenium dioxide, monohydrated.
Selenious Acid contains not less than 93.0 percent and not more than 101.0 percent of H2SeO3.
A: Dissolve about 50 mg in 5 mL of water, add about 100 mg of sodium bicarbonate, and mix: gas bubbles develop.
B: Dissolve about 50 mg in 5 mL of 0.1 N hydrochloric acid, and add about 50 mg of stannous chloride: a curdy tan-orange precipitate is formed.
Residue on ignition: not more than 1.0 mg, from 10.0 g (0.01%).
Insoluble matter: Dissolve 1 g in 5 mL of water: it dissolves completely and the solution is clear.
Selenate and sulfate: Dissolve about 0.5 g in 10 mL of water, add 0.1 mL of hydrochloric acid and 1 mL of barium chloride, and mix: no turbidity or precipitate is formed in 10 minutes.
Assay: Transfer about 100 mg of Selenious Acid, accurately weighed, to a suitable glass-stoppered flask, and dissolve in 50 mL of water. Add 10 mL of potassium iodide solution (3 in 10) and 5 mL of hydrochloric acid, mix, insert the stopper in the flask, and allow to stand for 10 minutes. Add 50 mL of water and 3 mL of starch, and titrate with 0.1 N sodium thiosulfate until the solution is colorless, then titrate with 0.1 N iodine VS to a blue endpoint. Subtract the volume of 0.1 N iodine from the volume of 0.1 N sodium thiosulfate to obtain the volume of 0.1 N sodium thiosulfate equivalent to selenious acid. Each mL of 0.1 N sodium thiosulfate is equivalent to 3.225 mg of H2SeO3.
Selenious acid Manufacturers:
Muby Chemicals & Associated Cos
S-8, SARIFA MANSION, 2ND FLANK ROAD, CHINCHBUNDER, MUMBAI 400009, INDIA.
TEL: (Off.) 91-22-23770100, 23726950. 91-22-23728264. Gujarat & Mumbai India.
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Last updated 21-nov-17
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Muby.in Pharmaceutical IP BP USP Grades of Chemicals Ammonium Chloride Benzyl Alcohol BP Benzyl Alcohol USP, ACS Boric Acid USP-NF, BP Borax BP, USP-NF, ACS Boric Acid IP, ACS Calcium Chloride Calcium Hydroxide BP, USP Calcium Hydroxide FCC, ACS Calcium Oxide FCC, USP Calcium Saccharate Calcium Sulfate USP, BP Calcium Sulfate FCC, ACS Chromic Chloride USP, Chromium Chloride Gentian Violet USP, Crystal violet BP Magnesium Chloride BP, IP Magnesium Chloride USP-NF, FCC, ACS Magnesium Sulphate BP, IP Magnesium Sulfate USP, FCC ACS Manganese Chloride FCC, ACS Manganese Sulphate BP, Manganese Sulfate USP Manganese Sulfate ACS, FCC Magnesium Chloride Methyl-thioninium Chloride BP, Methylene Blue USP Maleic acid Potassium bromide Potassium Chloride Potassium nitrate Potassium nitrite Potassium Phosphate Sodium Acetate Sodium Bicarbonate BP, IP Sodium Bicarbonate USP, FCC, ACS Sodium Diacetate Sodium Phosphate Sodium propionate Sodium Thiosulphate Sodium Thiosulfate BP-USP-IP Sodium Thiosulfate-ACS-FCC-Food Sodium Hydroxide Pellets USP-NF FCC ACS Caustic Soda Pellets BP IP Sodium nitrite Sodium nitrate Zinc Chloride Other Chemical Products Ammonium Phosphate Ammonium persulfate Barium chloride Calcium propionate Ceric ammonium nitrate Cupric Chloride Calcium Nitrite Nitrate Isatoic Anhydride HEDP Hhydroxyethylidene diphosphonic acid Potassium Iodide Sodium Bromide Sodium Formaldehyde Bisulfite
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