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Potassium Aluminum Sulfate or Potassium Alum or Potash Alum Dodecahydrate Anhydrous USP FCC Food Analytical Reagent Grade Supplier Exporter Manufacturers' Representative |
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Potassium Aluminum Sulfate or Potassium Alum or Potash Alum
CAS Number: Dodecahydrate 7784-24-9 and Anhydrous 10043-67-1
Molecular Formula: AlK(SO4)2-12H2O Dodecahydrate
Molecular Weight: 258.21 Dodecahydrate
Potassium Aluminum Sulfate or Potassium Alum or Potash Alum
Potassium Alum USP Grade Specifications
Aluminum Potassium Sulfate USP
AlK(SO4)2-12H2O -- 474.39
Sulfuric acid, aluminum potassium salt (2:1:1), dodecahydrate.
Aluminum potassium sulfate (1:1:2) dodecahydrate CAS 7784-24-9.
Anhydrous 258.21 CAS 10043-67-1
Potassium Alum contains not less than 99.0 percent and not more than 100.5 percent of AlK(SO4)2, calculated on the dried basis.
Identification:
A: Add 1 N sodium hydroxide drop wise to a solution of it (1 in 20): a precipitate is formed that dissolves in an excess of the reagent. Ammonia is not evolved (distinction from Ammonium Alum).
B: Hold it in a non-luminous flame: a violet color is imparted to the flame.
C: Add 10 mL of sodium bitartrate to 5 mL of a saturated solution of it: a white, crystalline precipitate is formed within 30 minutes.
D: A solution (1 in 20) responds to the tests for Aluminum and for Sulfate.
Loss on drying: Transfer 2.0 g, in a tarred porcelain crucible, to a muffle furnace at 200. Increase the temperature to 400 and dry at 400 to constant weight. Cool in a desiccator, and weigh: it loses between 43.0% and 46.0% of its weight.
Heavy metals: the limit is 0.002%.
Iron: Add 5 drops of potassium ferro-cyanide TS to 20 mL of a solution (1 in 150): no blue color is produced immediately.
Aluminum Potassium Sulfate FCC Food Grade Specifications
Potassium Alum FCC
AlK(SO4)2-12H2O Formula weight 474.38
INS: 522 CAS 7784-24-9
DESCRIPTION
Aluminum Potassium Sulfate occurs as large, transparent crystals or crystalline fragments, or as a white crystalline powder. One gram dissolves in 7.5 mL of water at 25C and in about 0.3 mL of boiling water. Its solutions are acid to litmus. It is insoluble in alcohol, but is freely soluble in glycerin.
REQUIREMENTS
Identification: A 1:20 aqueous solution gives positive tests for Aluminum, for Potassium, and for Sulfate.
Assay: Not less than 99.5% and not more than 100.5% of AlK(SO4)2-12H2O.
Ammonium Salts: Passes test.
Fluoride: Not more than 0.003%.
Lead: Not more than 3 mg/kg.
Selenium: Not more than 0.003%.
Aluminum Potassium Sulfate Dodecahydrate Analytical Reagent Grade Specifications
Potash Alum
AlK(SO4)2-12H2O
Formula Weight 474.39
CAS Number 7784-24-9
REQUIREMENTS
Assay: 98.0-102.0% AlK(SO4)2-12H2O
MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Chloride (Cl): 5 ppm
Ammonium (NH4): 0.005%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.001%
Sodium (Na): 0.02%
Potassium Aluminum Sulfate or Potassium Alum or Potash Alum is also supplied in BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Potassium Aluminum Sulfate or Potassium Alum or Potash Alum Dodecahydrate Anhydrous Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
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