磷酸

ACS reagent

3.4 (vs air)

2.2 mmHg ( 20 °C), 5 mmHg ( 25 °C)

≥85% H₃PO₄

Reducing substances, passes test, ≤0.001% Volatile acids (as CH₃COOH), ≤0.005% Insoluble matter, calcium, magnesium, and ammonium hydroxide precipitate

APHA: ≤10

158 °C (lit.)

~40 °C (lit.)

1.68 g/mL at 25 °C (lit.), 1.685 g/mL at 25 °C (lit.)

chloride (Cl^-): ≤3 ppm, nitrate (NO₃^-): ≤5 ppm, sulfate (SO₄^2-): ≤0.003%

As: ≤1 ppm, Fe: ≤0.003%, K: ≤0.005%, Mn: ≤0.5 ppm, Na: ≤0.025%, Sb: ≤0.002%, heavy metals (as Pb): ≤0.001%

OP(O)(O)=O

1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)

NBIIXXVUZAFLBC-UHFFFAOYSA-N