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Orthophosphoric Acid or Phosphoric Acid
CAS Number: 7664-38-2
Molecular Formula: H3PO4
Molecular Weight: 98
Orthophosphoric Acid or Phosphoric Acid USP NF Grade Specifications:
H3PO4 --- 98.00
Phosphoric acid --- CAS 7664-38-2.
Phosphoric Acid contains not less than 85.0 percent and not more than 88.0 percent, by weight, of H3PO4.Identification: When carefully neutralized with 1 N sodium hydroxide, PhPh being used as the indicator, it responds to the tests for Phosphate.
Caution: Avoid contact, as Phosphoric Acid rapidly destroys tissues.
Sulfate: Dilute 6 mL of Phosphoric Acid with 90 mL of water, and add 1 mL of barium chloride: no precipitate is formed immediately.
Heavy metals: 0.001%.
Alkali phosphates: Transfer 1 mL of it to a graduated cylinder, and add 6 mL of ether and 2 mL of alcohol: no turbidity is produced.
Limit of nitrate: Dilute 6 mL of Phosphoric Acid with 14 mL of water, mix 5 mL of the dilution with about 0.1 mL of indigo carmine, then add 5 mL of sulfuric acid: the blue color is not discharged within 1 minute.
Phosphorous or hypophosphorous acid: Dilute 6 mL of Phosphoric Acid with 14 mL of water. Gently warm 5 mL of the dilution and add 2 mL of silver nitrate: the mixture does not become brownish.
Assay: Weigh accurately about 1 g of Phosphoric Acid in a tared, glass-stoppered flask, and dilute it with water to about 120 mL. Add 0.5 mL of thymolphthalein and titrate with 1 N sodium hydroxide to the first appearance of a blue color. Perform a blank determination and make any necessary correction. Each mL of 1 N sodium hydroxide is equivalent to 49.00 mg of H3PO4.
Phosphoric Acid AR Analytical Reagent Grade Specifications
Formula Weight 98.00 CAS Number 7664-38-2
Assay: >85.0% H3PO4
Color (APHA): 10
Insoluble matter: 0.001%
Chloride (Cl): 3 ppm
Nitrate (NO3): 5 ppm
Sulfate (SO4): 0.003%
Volatile acids (as CH3COOH): 0.001%
Antimony (Sb): 0.002%
Potassium (K): 0.005%
Sodium (Na): 0.025%
Arsenic (As): 1 ppm
Heavy metals (as Pb): 0.001%
Iron (Fe): 0.003%
Manganese (Mn): 0.5 ppm
Reducing substances: Passes test.
Phosphoric Acid FCC Food Grade Specifications
H3PO4 Formula weight 98.00
INS: 338 CAS 7664-38-2
Phosphoric Acid occurs as a colorless, aqueous solution, usually available in concentrations ranging from 75.0% to 85.0%. It is miscible with water and with alcohol.
Labeling: Indicate the percent, or the percent range, of Phosphoric Acid (H3PO4).
Identification: A 1:10 aqueous solution gives positive tests for Phosphate.
Assay: Not less than the minimum or within the range of percentage claimed by the vendor.
Arsenic: Not more than 3 mg/kg.
Cadmium: Not more than 3 mg/kg.
Fluoride: Not more than 10 mg/kg.
Lead: Not more than 3 mg/kg.
We also supply Phosphoric Acid BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Orthophosphoric Acid or Phosphoric Acid 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.
Suppliers and Manufacturers' Representative:
6903 Gossamer Ln, Sugar Land, Texas, USA 77479
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665