Potassium Alum FCC Food USP BP Ph Eur Reagent Manufacturers

We are manufacturers of Potassium Alum or Potash Alum or Aluminum Potassium Sulfate FCC Food Grade USP BP Ph Eur Reagent, Pharmaceutical Excipients chemicals. We offer Halal and Kosher Potassium Alum or Potash Alum or Aluminum Potassium Sulfate FCC Food Grade USP BP Ph Eur Reagent made in an ISO9001, ISO22000 (FSSC22000) cGMP and GLP certified facility.

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Potassium Alum or Potash Alum or Aluminum Potassium Sulfate FCC Food Grade USP BP Ph Eur Reagent Manufacturers

Aluminum Potassium Sulfate; Potassium Alum FCC Food Grade, Potash Alu
AlK(SO4)2·12H2O Formula wt 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 25° 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.
Function: Buffer; neutralizing agent; firming agent.

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%.

Alum BP Ph Eur, Potash Alum
Aluminium Potassium Sulphate
AlK(SO4)2,12H2O__474.4__7784-24-9

CHARACTERS
Appearance: Granular powder or colourless, transparent, crystalline masses.
Solubility: Freely soluble in water, very soluble in boiling water, soluble in glycerol, practically insoluble in ethanol (96 per cent).

IDENTIFICATION
A. Solution S (see Tests) gives the reactions of sulphates.
B. Solution S gives the reaction of aluminium.
C. Shake 10 ml of solution S with 0.5 g of sodium bicarbonate R and filter. The filtrate gives reaction (a) of potassium.

TESTS
Solution S: Dissolve 2.5 g in water R and dilute to 50 ml with the same solvent.
Appearance of solution: Solution S is clear and colourless.
pH: 3.0 to 3.5.
Ammonium: Maximum 0.2 per cent.
Iron: Maximum 100 ppm.
Heavy metals: Maximum 20 ppm.

Potassium Alum 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 TS 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%.

Potassium Alum or Potash Alum or Aluminum Potassium Sulfate FCC Food Grade USP BP Ph Eur Reagent Manufacturers:

Anmol Chemicals
S-8, SARIFA MANSION, 2ND FLANK ROAD, CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE) 91-22-23770100, 23726950, 23774610, 23723564. FAX: 91-22-23728264

Exporters to USA, Canada, UAE, Dubai, Egypt, Turkey, Mexico, Brazil, Chile, Argentina, Europe, Netherlands, Italy, Spain, Germany, Portugal, France, Malaysia, Indonesia, Thailand, Korea, Japan, etc.