Sulphuric acid / H₂SO₄

Sulphuric acid

Gas Identification

Other denomination

Hydrogen sulphide

CAS Registry Number
SCBA type

Chemical properties

Molecular formula
Molecular mass
98,1 g/mol

Physical properties

Boiling point
337 °C
Autoignition temperature
Gas/Vapour density
12 eV

Flammability limit


Threshold limit value

0,05 mg/m³
0,5 ppm • 3 mg/m³

Sulphuric acid : Description and use


Formerly known as oil of vitriol or fuming sulphuric acid, sulphuric acid is a mineral acid. Its strength (pKa = -3.0) is exceeded by only a few superacids.
Concentrated sulphuric acid is not to be confused with fuming sulphuric acid, also known as oleum. The latter is a solution of 10 to 80% sulphur trioxide in anhydrous sulphuric acid.
Sulphuric acid is also available in the form of aqueous solutions in various concentrations. The acid used in lead-acid batteries has a content of under 51%.

Flammability: Sulphuric acid is a non-flammable liquid, which takes the form of a hygroscopic, oily, colourless and odourless liquid. However, if sulphuric acid comes into contact with combustible materials it can produce enough heat to cause a fire. Sulphuric acid reacts with most metals, especially if water is present, releasing hydrogen, a flammable and explosive gas.

  • To manufacture phosphoric acid and fertiliser
  • Base product in the manufacture of several chemical products (alcohols, mineral sulphates, detergents, etc.)
  • To manufacture explosives
  • Oil industry, textile industry, pulp and paper industry, pharmaceutical industry
  • Processing metals (leaching, pickling, electrolytic treatment)
  • Batteries
  • Dehydrating agent
  • Laboratory use
  • etc.

Sulphuric acid : Warnings and caution

GHS hazard statements

H314 - Causes severe skin burns and eye damage.
H330 - Fatal if inhaled.

GHS precautionary statements

P101 - If medical advice is needed, have product container or label at hand.
P103 - Read label before use.
P280 - Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P390 - Absorb spillage to prevent material damage.
P301+P330+P331 - IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P302+P352 - IF ON SKIN: Wash with plenty of soap and water.

SGH06 : Toxique
SGH05 : Corrosif

Sulphuric acid : Related products

Aucun produit disponible n'est actuellement lié à la détection de ce gaz.