Potassium Alum USP, Potash Alum BP Ph Eur, Aluminium Aluminum Potassium Sulfate Sulphate Manufacturers |
Supplier, Manufacturer, Exporter of Aluminum Potassium Sulfate or Aluminium Potassium Sulphate or Potassium Alum or Potash Alum, Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance Food & Flavor chemicals, Reagent Grade Chemicals, Shale Gas Fracturing Chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, China, Germany, France, Italy, Portugal, Bangladesh, etc. The products are offered as per required specifications and in correct shape and size in mm or meshs or microns as specified by the buyer. The participating units have one or more accreditations like FDA - cGMP and GLP approval, ISO-9001 Certified, "REACH" Registered, ISO-14001, ISO/IEC 17025, ISO-22000, FSSC 22000, ISO 45001, Kosher Certified, Halal Certified, HACCP, FSSAI. We offer Commercial Pure & IP BP EP Ph Eur USP NF JP FCC Food Grade Analytical Reagent Grades of Chemicals |
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Potassium Alum, Aluminum Potassium Sulfate CAS No 7784-24-9, Molecular Weight 474.39, Chemical Formula AlK(SO4)2-12H2O
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Potassium Alum USP Grade Specifications
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.
Packaging and storage— Preserve in tight containers, and store at room temperature.
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%.
Iron— Add 5 drops of potassium ferrocyanide TS to 20 mL of a solution (1 in 150): no blue color is produced immediately.
Aluminum Potassium Sulfate; Potassium Alum FCC Food Grade Specifications, Potash Alum
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.
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, Potash Alum Ph Eur Grade Specifications
Aluminium Potassium Sulphate
AlK(SO4)2-12H2O__474.4__CAS 7784-24-9
DEFINITION
Content
99.0 per cent to 100.5 per cent of AlK(SO4)2,12H2O.
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.
Aluminum Potassium Sulfate Dodecahydrate Analytical Reagent Grade Specifications
AlK(SO4)2-12H2O
Formula Wt 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%.
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Last
9 July, 2024
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