Orthophosphoric acid

SKU:
TC533M
CAS Number : 7664-38-2
Synonym : phosphoric acid
Molecular Formula : H₃PO₄
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Product Description

Molecular weight 98.0
Molecular formula H3PO4
CAS No. 7664-38-2

Quality Control

Appearance (USP) Colorless, odorless liquid of syrupy consistency
Appearance (EP, BP, IP) A clear, colourless, syrupy liquid; corrosive. When kept at a low temperature it may solidify, producing a mass of colourless crystals which do not melt until the temperature reaches 28°C
Solubility (USP) Miscible with water and with alcohol
Solubility (IP) Miscible with water and with ethanol (95%)
Solubility (EP, BP) Miscible with water and with ethanol (96%)
Identification A (EP, BP, IP) The solution is strongly acid
Identification A : Phosphate (USP) Meets the requirements
Identification B : Phosphate (EP, BP, IP) 6.66% solution in water gives the reaction of phosphates
Appearance of solution (EP, BP, IP) 6.66% solution in water is clear and colourless
Substances precipitated with ammonia (EP, ВР) Any opalescence in the solution is not more intense than that in a mixture of 10 mL of solution S and 8 mL of water
Specific gravity (USP) ~1.7
Relative density (EP, BP) ~1.7
Arsenic (EP, BP, IP) <= 0.0002%
Heavy metals (IP) <= 0.0010%
Iron (EP, BP) <= 0.0050%
Iron (IP) <= 0.0060%
Chloride (EP, BP, IP) <= 0.0050%
Sulphate (EP, BP, IP) <= 0.01%
Limit of nitrate (USP) The blue color is not discharged within 1 min.
Sulfate (USP) No precipitate is formed immediately
Alkali phosphates (USP, IP) No turbidity is produced
Aluminium & calcium (IP) The solution remains clear
Phosphorous or hypophosphorous acid (USP) The mixture does not become brownish
Hypophosphorous acid and phosphorous acid (EP, BP, IP) The appearance of the solution does not change
Assay: NaOH Titration (EP, BP, IP) 84.00-90.00%
Assay: NaOH Titration (USP) 85.00 - 88.00% by weight

Storage and Shelf Life

Storage Store below 30°C away from bright light.
Shelf life 48 months.
Usage Use before expiry date given on the product label.
CAS Number : 7664-38-2
Synonym : phosphoric acid
Molecular Formula : H₃PO₄
More Information
Product Name Orthophosphoric acid
SKU TC533M
CAS No 7664-38-2
EC No. 231-633-2
Molecular formula H₃PO₄
Synonym phosphoric acid
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