|H314 Causes severe skin burns and eye damage.|
|H290 May be corrosive to metals.|
|P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.|
|P260 Do not breathe dust/ fume/ gas/ mist/ vapours/ spray.|
|P301 + P330 + P331 IF SWALLOWED: rinse mouth. Do NOT induce vomiting.|
|P303+P361+P353+P310 IF ON SKIN or hair: Remove/Take off immediately all contaminated clothing. Rinse skin with water. Immediately call a poison centre or doctor/physician.|
|P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.|
|P405 Store locked up.|
Sulphuric Acid at 50% concentration for a wide variety of industrial uses.
Sulphuric acid (alternative spelling sulfuric acid) is a highly corrosive strong mineral acid with the molecular formula H2SO4. It is a pungent, colourless or slightly yellow viscous liquid which is soluble in water at all concentrations.
Its corrosiveness on other materials, like metals, living tissues or even stone, can be mainly ascribed to its strong acidic nature and, if concentrated, its strong dehydrating and oxidising properties. Sulphuric acid at a high concentration can cause very serious damage upon contact, as it not only causes chemical burns via hydrolysis, but also secondary thermal burns via dehydration. It burns the cornea and can lead to permanent blindness if splashed onto eyes. Accordingly, safety precautions should be strictly observed when handling it.
It is hygroscopic, readily absorbing water vapour from the air.
Sulphuric acid has a wide range of applications including domestic acidic drain cleaning, as an electrolyte in lead-acid batteries and in various cleaning agents. It is also widely used in the chemical industry. Principal large-scale uses include mineral processing, fertiliser manufacturing, oil refining, waste water processing, and chemical synthesis.
The greatest use is in the fertiliser production, but it is also widely used in the chemical industry for the production of detergents, synthetic resins, dyestuffs, pharmaceuticals, petroleum catalysts, insecticides and anti-freeze, as well as in various processes such as oil well acidification, aluminium reduction, paper sizing, water treatment. It is also used to make dyestuffs, pigments, paints, enamels, printing inks, coated fabrics and paper, explosives, cellophane, acetate and viscose textiles, lubricants, non-ferrous metals and batteries.
Another important use for sulphuric acid is for the manufacture of aluminium sulphate (alum) and aluminium hydroxide, which is used at water treatment plants to filter out impurities and improve the taste of the water.
It is used in large quantities by the iron and steelmaking industry to remove oxidation, rust and scaling from rolled sheet and billets prior to sale to the automobile and household appliance industry.
Sulphuric acid acts as the electrolyte in lead-acid (car) batteries.
Acidic drain cleaners usually contain sulphuric acid at a high concentration. An acidic drain cleaner can be used to dissolve grease, hair and even tissue paper inside water pipes. Just as with alkaline drain cleaners, sulphuric acid cleaners dissolve fats and proteins via hydrolysis. Moreover, as concentrated sulphuric acid has a strong dehydrating property, it will also remove tissue paper. Since the acid may react with water vigorously, such acidic drain openers should be added slowly into the pipe to be cleaned.