Product Name

ortho-Phosphoric acid 99%, cryst. for analysis EMSURE^®

vapor density

3.4 (vs air)

Quality Level

300

vapor pressure

2.2 mmHg ( 20 °C)
5 mmHg ( 25 °C)

product line

EMSURE^®

Assay

≥99% (acidimetric)

form

solid

potency

2740 mg/kg LD₅₀, skin (Rabbit)

concentration

85% phosphoric acid

impurities

≤20 ppm Substances reducing potassium permanganate (as O)
≤20 ppm Volatile acids (as CH₃COOH)

pH

<0.5 (20 °C, 100 g/L in H₂O)

bp

158 °C (lit.)

mp

~40 °C (lit.)

solubility

750-850 g/L

density

1.685 g/mL at 25 °C (lit.)
1.84 g/cm³ at 38 °C

anion traces

chloride (Cl^-): ≤2 ppm
fluoride (F^-): ≤0.5 ppm
nitrate (NO₃^-): ≤2 ppm
phosphite, hypophosphite (as H₃PO₃): ≤500 ppm

cation traces

As: ≤1 ppm
Ca: ≤20 ppm
Cd: ≤1 ppm
Co: ≤1 ppm
Cu: ≤1 ppm
Fe: ≤10 ppm
K: ≤5 ppm
Mg: ≤1 ppm
Mn: ≤1 ppm
Na: ≤50 ppm
Ni: ≤1 ppm
Pb: ≤1 ppm
Sb: ≤1 ppm
Zn: ≤1 ppm

storage temp.

2-30°C

SMILES string

OP(O)(O)=O

InChI

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

InChI key

NBIIXXVUZAFLBC-UHFFFAOYSA-N