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Zinc Stearate USP NF BP Ph Eur IP Grade Manufacturers
Anmol Chemicals is a manufacturer supplier exporter of Zinc Stearate and it offers materials as per IP BP EP Ph Eur USP NF JP FCC Food Grade as per the the latest monograph at best prices. Anmol Chemicals Group, established in 1976, is the pioneer manufacturer of Specialty Chemicals, Pharmaceutical Excipients, Some API, Food Chemicals in India. Anmol Chemicals Group has manufacturing facilities spread across Western India, representatives in Houston, Chicago USA and Dubai, UAE. We also have toll manufacturing units for processing chemicals in a few countries around the world. We make IP, BP, EP, USP, NF, Ph. Eur., JP, FCC or Food Grade, Analytical Reagent Grade, LR or Laboratory Reagent Grades and Pure Grades of various chemicals. All our items are analyzed to meet the required standards. We can supply the product in grams for your laboratory trial and in tons for your plant scale jobs.
We manufacture Bulk Drugs / API, Excipients, Pharmaceuticals (IP BP USP NF Ph Eur EP JP), Specialty Chemicals (Pure/Reagent), Mineral Fortifiers (FCC). Our manufacturing facility is FDA approved and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) is available. Solid materials can be customized for particle size, shape, and bulk density. We observe WHO Good Manufacturing Practices and Good Laboratory Practices. We are a government-recognized STAR Export House and "Authorised Economic Operator (AEO)" per Indian Customs.
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Zinc Stearate SDS of Manufacturers
Synonyms: Dibasic zinc stearate; stearic acid zinc salt; octadecanoic acid zinc salt, zinc distearate.
CAS Number: 557-05-1, Molecular Weight: 632.2, Chemical Formula: Zn(C18H35O2)2, EINECS EC Number: 209-151-9, FEMA: ----,
Zinc stearate is a "zinc soap" that is widely used industrially. In this context, soap is used in its formal sense, a metal "salt" of a fatty acid. It is a white solid that repels water. It is insoluble in polar solvents such as alcohol and ether but soluble in aromatic hydrocarbons (e.g., benzene) and chlorinated hydrocarbons when heated. It is the most powerful mold release agent among all metal soaps.
We offer BP Ph Eur USP NF Grade of Zinc Stearate.
Specifications of Zinc Stearate USP grade:
Octadecanoic acid, zinc salt;
Zinc stearate CAS 557-05-1.
Zinc Stearate is a compound of zinc with a mixture of solid organic acids obtained from fats and consists chiefly of variable proportions of zinc stearate and zinc palmitate. It contains the equivalent of NLT 12.5% and NMT 14.0% of ZnO.
A. Identification Tests General, Zinc:
Sample solution: Mix 25 g with 200 mL of hot water, add 60 mL of 2 N sulfuric acid, and boil until the fatty acids separate as a transparent layer. Cool the mixture, and remove the solidified layer of fatty acids.
Acceptance criteria: A portion of the water layer meets the requirements.
B. Congealing Temperature:
Analysis: Place the separated fatty acids obtained in Identification test A in a filter wetted with water, and wash with boiling water until free from sulfate. Collect the fatty acids in a small beaker, allow to cool, pour off the separated water, then melt the acids. Filter into a dry beaker while hot, and dry at 105C for 20 minutes.
Acceptance criteria: The fatty acids congeal at a temperature not below 54C.
Sample solution: Boil 1 g of Zinc Stearate with 50 mL of 0.1 N sulfuric acid for at least 10 min, or until the fatty acids layer is clear, adding more water as necessary to maintain the original volume. Cool, and filter. Wash the filter and the flask thoroughly with water until the last washing is not acid to litmus paper.
Analysis: Add to the combined filtrate and washings 15 mL of ammonia–ammonium chloride buffer and 0.2 mL of eriochrome black. Heat the solution to about 40C and titrate with 0.05 M EDTA disodium until the solution is deep blue in color. Each mL of 0.05 M EDTA disodium is equivalent to 4.069 mg of ZnO.
Acceptance criteria: 12.5%–14.0% of ZnO
Arsenic: NMT 1.5 ppm
Lead: NMT 10 ppm.
Alkalies and Alkaline Earths:
Sample solution: Mix 2.0 g with 50 mL of water and add 10 mL of hydrochloric acid. Boil until the solution is clear, filter while hot, and wash the separated fatty acids with about 50 mL of hot water. Render the combined filtrate and washings alkaline with 6 N ammonium hydroxide. Add ammonium sulfide to precipitate the zinc completely, dilute with water to 200 mL, mix, and filter.
Analysis: To 100 mL of the clear filtrate add 0.5 mL of sulfuric acid, evaporate to dryness, and ignite to constant weight.
Acceptance criteria: The weight of the residue does not exceed 10 mg (1.0%).
Packaging and Storage: Preserve in well-closed containers.
Specifications of Zinc Stearate BP Ph Eur Grade:
Action and use: Excipient.
Zinc stearate [(C17H35COO)2Zn; Mr 632] may contain varying proportions of zinc palmitate [(C15H31COO)2Zn; Mr 576.2] and zinc oleate [(C17H33COO)2Zn; Mr 628].
Content: 10.0 per cent to 12.0 per cent of Zn.
Appearance: Light, white or almost white, amorphous powder, free from gritty particles.
Solubility: Practically insoluble in water and in anhydrous ethanol.
A. Freezing point: minimum 53C, determined on the residue obtained in the preparation of solution S (see Tests).
B. Neutralise 5 mL of solution S to red litmus paper with strong sodium hydroxide solution. The solution gives the reaction of zinc.
Solution S: To 5.0 g add 50 mL of ether and 40 ;mL of a 7.5 per cent V/V solution of cadmium- and lead-free nitric acid in distilled water R. Heat under a reflux condenser until dissolution is complete. Allow to cool. In a separating funnel, separate the aqueous layer and shake the ether layer with 2 quantities, each of 4 mL, of distilled water. Combine the aqueous layers, wash with 15 mL of ether and heat on a water-bath until ether is completely eliminated. Allow to cool and dilute to 50 mL with distilled water (solution S). Evaporate the ether layer to dryness and dry the residue at 105C.
Appearance of solution: Solution S is not more intensely coloured than reference solution.
Appearance of solution of fatty acids: Dissolve 0.5 g of the residue obtained in the preparation of solution S in 10 mL of chloroform. The solution is clear and not more intensely coloured than reference solution5
Acidity or alkalinity: Shake 1.0 g with 5 mL of ethanol (96 per cent) and add 20 mL of carbon dioxide-free water and 0.1 mL of phenol red solution. Not more than 0.3 mL of 0.1 M hydrochloric acid or 0.1 mL of 0.1 M sodium hydroxide is required to change the colour of the indicator.
Acid value of the fatty acids: 195 to 210.
Chlorides: Maximum 250 ppm.
Sulfates: Maximum 0.6 per cent.
Cadmium: Maximum 5 ppm.
Lead: Maximum 25 ppm.
Keywords: Dibasic zinc stearate, Stearic acid zinc salt, Octadecanoic acid zinc salt, Zinc distearate, Zinc stearate IP BP Ph Eur EP USP Analytical Reagent FCC Food Grade Manufacturer Supplier Exporter Monograph Uses Chemical Molecular Formula Weight.
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Last updated 23-dec-22
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