CAS 7664-93-9
Sulphuric Acid
Sulphuric Acid (98%) is the most produced industrial chemical, used for fertilisers, metal leaching, steel pickling, chemical manufacture and pH control.
Concentrated sulphuric acid, H₂SO₄, is made by the contact process from sulphur or smelter gases. At 98% it is a dense, oily liquid that is strongly acidic, strongly dehydrating and releases large amounts of heat on dilution.
More than half of the world's sulphuric acid goes into phosphate fertilisers. The rest is used to leach copper, nickel and uranium ores, pickle steel, make alum, ferric sulphate and other sulphates, regenerate ion-exchange resins and neutralise alkaline effluent. Battery-grade acid is a separate, high-purity grade.
- CAS number
- 7664-93-9
- Grades / forms
- 98% technical
- Industries
- Basic Industrial Chemicals
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- MSDS in destination format
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Typical applications
- Phosphoric acid, SSP and ammonium sulphate fertilisers
- Heap and tank leaching of copper, nickel and uranium
- Steel pickling
- Alum, ferric sulphate and other sulphate chemicals
- pH correction of alkaline effluent
- Ion-exchange resin regeneration
Packing options
- 35 kg HDPE carboys
- 1,000 L IBCs
- ISO tanks
Storage & handling
Concentrated acid (above about 93%) can be stored in carbon steel; dilute acid cannot. It is hygroscopic and reacts violently with water. Ships as UN 1830, Class 8.
Documentation
Certificate of Analysis, MSDS, Certificate of Origin, dangerous goods declaration where applicable, and third-party pre-shipment inspection on request.
Typical specification
- H₂SO₄ content
- ≥ 98%
- Iron (as Fe)
- ≤ 50 ppm
- Residue on ignition
- ≤ 0.03%
- Specific gravity
- About 1.84 at 20 °C
Typical values for reference. The exact specification is agreed before the order and confirmed on the Certificate of Analysis for each batch.
Sulphuric Acid — frequently asked
Always add sulphuric acid slowly to water, never water to acid, with constant stirring and cooling. Dilution releases enough heat to boil water and spatter acid, so full face and body protection are essential.
Yes. At concentrations above about 93%, sulphuric acid forms a protective iron sulphate layer on carbon steel. Diluted acid attacks steel rapidly, so moisture must be kept out of steel tanks.
Yes. Sulphuric acid ships as UN 1830, Class 8 (corrosive), Packing Group II, in UN-approved packaging or ISO tanks.
Yes. Chemtrade manufactures and exports Sulphuric Acid (CAS 7664-93-9) from Surat, Gujarat, India to more than 55 countries, for customers in Basic Industrial Chemicals. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Sulphuric Acid from Chemtrade includes a batch-specific Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
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