Sulphuric Acid

SULPHURIC ACID
CAS No. : 7664-93-9
Original : INDONESIA
Packaging : 35 kgs/can, 350 kgs/drum, 5-20MT/tank (ISO)

Formula : H2SO4
Form : Liquid
Colour : Transparent to yelowish
Concentrate : min 98,0%
Spec Gravity: min 1.8
Fe : max 100 ppm
Mn : max 1 ppm
Pb : max 10 ppm

Sulfuric acid is a very important commodity chemical, and indeed, a nation’s sulfuric acid production is a good indicator of its industrial strength. The major use (60% of total production worldwide) for sulfuric acid is in the “wet method” for the production of phosphoric acid, used for manufacture of phosphate fertilizers as well as trisodium phosphate for detergents. In this method, phosphate rock is used, and more than 100 million tonnes are processed annually.

Sulfuric acid is used in large quantities by the iron and steelmaking industry to remove oxidation, rust and scale from rolled sheet and billets prior to sale to the automobile and white-goods industry.

Another important use for sulfuric acid is for the manufacture of aluminum sulfate, also known as paper maker’s alum. This can react with small amounts of soap on paper pulp fibers to give gelatinous aluminum carboxylates, which help to coagulate the pulp fibers into a hard paper surface. It is also used for making aluminum hydroxide, which is used at water treatment plants to filter out impurities, as well as to improve the taste of the water. Aluminum sulfate is made by reacting bauxite with sulfuric acid:

Al2O3 + 3 H2SO4 → Al2(SO4)3 + 3 H2O.Sulfuric acid is used for a variety of other purposes in the chemical industry. For example, it is the usual acid catalyst for the conversion of cyclohexanoneoxime to caprolactam, used for making nylon. It is used for making hydrochloric acid from salt via the Mannheim process. Much H2SO4 is used in petroleum refining, for example as a catalyst for the reaction of isobutane with isobutylene to give isooctane, a compound that raises the octane rating of gasoline (petrol). Sulfuric acid is also important in the manufacture of dyestuffs solutions and is the “acid” in lead-acid (car) batteries.

Sulfuric acid is also used as a general dehydrating agent in its concentrated form.