Sulfuric acid

InChI key

QAOWNCQODCNURD-UHFFFAOYSA-N

InChI

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

grade

ACS reagent, puriss. p.a.

agency

USP/NF, reag. ISO, reag. Ph. Eur.

vapor density

<0.3 (25 °C, vs air)

vapor pressure

1 mmHg ( 146 °C)

Quality Level

200

assay

95.0-97.0%

form

liquid

impurities

≤1 ppm heavy metals (as Pb), ≤2 ppm KMnO₄ red. matter (as O), ≤2 ppm ammonium (NH₄)

ign. residue

≤5 ppm

pH

1.2 (5 g/L)

bp

~290 °C (lit.)

density

1.840 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤0.1 ppm, nitrate (NO₃^-): ≤0.2 ppm, phosphate (PO₄^3-): ≤0.5 mg/kg

cation traces

Ag: ≤0.02 mg/kg, Al: ≤0.05 mg/kg, As: ≤0.01 ppm, Ba: ≤0.05 mg/kg, Be: ≤0.01 mg/kg, Bi: ≤0.05 mg/kg, Ca: ≤0.2 mg/kg, Cd: ≤0.02 mg/kg, Co: ≤0.01 mg/kg, Cr: ≤0.05 mg/kg, Cu: ≤0.01 mg/kg, Fe: ≤0.1 ppm, Ge: ≤0.05 mg/kg, Hg: ≤5 ppb, K: ≤0.1 mg/kg, Li: ≤0.01 mg/kg, Mg: ≤0.05 mg/kg, Mn: ≤0.01 mg/kg, Mo: ≤0.02 mg/kg, Na: ≤0.5 mg/kg, Ni: ≤0.02 mg/kg, Pb: ≤0.02 mg/kg, Sr: ≤0.02 mg/kg, Ti: ≤0.1 mg/kg, Tl: ≤0.05 mg/kg, V: ≤0.01 mg/kg, Zn: ≤0.05 mg/kg, Zr: ≤0.1 mg/kg