Phosphoric acid concentrated Ph.,Eur 2.5LT Go Back

CASR

: 7664-38-2

Molecular Formula

: H3PO4

Molecular Weight

: 98
Specifications  
Appearance: A clear, colorless, syrupy liquid, corrosive.
Solubility: Miscible with water and with ethanol (96%)
Relative density, 20°C: About 1.7
Identification A (By Chemical test): The solution should strongly acidic.
Identification B (Phosphate 1): A yellow precipitate should form whose colour does not change by boiling and which dissolves on addition of ammonia
Identification B (Phosphate 2): A yellow color should develop
Appearance of Solution: Clear and colorless solution
Substance precipitated with ammonia(NH4): Any opalescence in the solution should not be more intense than that of reference solution
Hypophosphorus acid and phosphorous acid: The solution should not show change in appearance
Chloride (Cl): 50ppm max
Sulphate (SO4): 100ppm max
Arsenic (As): 2ppm max
Iron (Fe): 50ppm max
Assay: 84.0% - 90.0% m/m
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