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Aluminum Sulfate Anhydrous Octadecahydrate USP Analytical Reagent FCC Food Grade Supplier Exporter Manufacturers' Representative

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Aluminum Sulfate Anhydrous Octadecahydrate
CAS Number: Anhydrous 10043-01-3 and Octadecahydrate 7784-31-8

Molecular Formula: Al2(SO4)3 Anhydrous and Al2(SO4)3-18H2O Anhydrous
Molecular Weight: 342.14 Anhydrous and 666.43 Anhydrous.

Aluminum Sulfate Anhydrous Suppliers Aluminum Sulfate Octadecahydrate Suppliers
Aluminum Sulfate Anhydrous Octadecahydrate

Aluminum Sulfate USP Grade Specifications
Al2(SO4)3-xH2O (anhydrous) 342.15
Sulfuric acid, aluminum salt (3:2), hydrate.
Aluminum sulfate (2:3) hydrate
Anhydrous 342.16.

Aluminum Sulfate contains not less than 54.0 percent and not more than 59.0 percent of Al2(SO4)3. It contains a varying amount of water of crystallization.

Identification: A solution (1 in 10) responds to the tests for Aluminum and for Sulfate.
pH: not less than 2.9, in a solution (1 in 20).
Water: not less than 41.0% and not more than 46.0%.
Heavy metals: The limit is 20 µg per g.
Limit of alkalies and alkaline earths: To a boiling solution of 1.0 g in 150 mL of water add a few drops of methyl red TS and then add 6 N ammonium hydroxide just until the color of the solution changes to a distinct yellow. Add hot water to restore the volume to 150 mL, and filter while hot. Evaporate 75 mL of the filtrate to dryness, and ignite to constant weight: not more than 2 mg of residue remains (0.4%).
Limit of ammonium salts: Heat 1 g with 10 mL of 1 N sodium hydroxide on a steam bath for 1 minute: the odor of ammonia is not perceptible.
Iron: To 20 mL of a solution (1 in 150) add 0.3 mL of potassium ferrocyanide TS: no blue color is produced immediately.
Organic volatile impurities: meets the requirements.

Aluminum Sulfate FCC Food Grade Specifications
Al2(SO4)3 Formula weight, anhydrous 342.14
Al2(SO4)3-18H2O Formula weight, octadecahydrate 666.41
INS: 520 CAS: anhydrous 10043-01-3
CAS: octadecahydrate 7784-31-8

Aluminum Sulfate occurs as a white powder, as shining plates, or as crystalline fragments. It is anhydrous or contains 18 molecules of water of crystallization. Because of efflorescence, the hydrate may have a composition approximating the formula Al2(SO4)3-14H2O. One gram of the hydrate dissolves in about 2 mL of water. The anhydrous approaches the same solubility, but the rate of solution is so slow that it initially appears to be relatively insoluble. The pH of a 1:20 aqueous solution is 2.9 or above.

Identification: A 1:10 aqueous solution gives positive tests for Aluminum and for Sulfate.
Assay Anhydrous: Not less than 99.5% of Al2(SO4)3, calculated on the ignited basis.
Octadecahydrate: Not less than 99.5% and not more than 114.0% of Al2(SO4)3-18H2O, corresponding to not more than approximately 101.7% of Al2(SO4)3-14H2O.
Alkalies and Alkaline Earths: Passes test (about 0.4%).
Ammonium Salts: Passes test.
Fluoride: Not more than 0.003%.
Lead: Not more than 3 mg/kg.
Loss on Ignition Anhydrous: Not more than 5%.
Note: This Requirement does not apply to Al2(SO4)3-18H2O.
Selenium: Not more than 0.003%.

Aluminum Sulfate Hydrated Analytical Reagent Grade Specifications
CAS Number 7784-31-8 (for 18-hydrate)

Assay (as the labeled hydrate): 98.0-102.0%

Insoluble matter: 0.01%
Chloride (Cl): 0.005%
Substances not precipitated by ammonium hydroxide (as SO4): 0.2%
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.002%.

We also supply Aluminum Sulfate of BP Ph Eur Grade.

Please visit SDS Safety Data Sheet of Aluminum Sulfate Suppliers.

American Molecules, also known as 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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Suppliers and Manufacturers' Representative:
American Molecules - USA
9910 Bent Oak Dr
Houston, TX 77040, USA
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