Sulfuric acid

InChI

1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)

InChI key

QAOWNCQODCNURD-UHFFFAOYSA-N

grade

ACS reagent

vapor density

<0.3 (25 °C, vs air)

vapor pressure

1 mmHg ( 146 °C)

assay

95.0-98.0%

impurities

Substances reducing permanganate as SO₂, passes test (limit 2 ppm)

ign. residue

≤5 ppm

color

APHA: ≤10, clear

bp

~290 °C (lit.)

density

1.840 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.2 ppm, nitrate (NO₃^-): ≤0.5 ppm

cation traces

As: ≤0.01 ppm, Fe: ≤0.2 ppm, Hg: ≤5 ppb, NH₄⁺: ≤2 ppm, heavy metals (as Pb): ≤1 ppm