Explain The Difference Between Heavy Chemicals And Fine Chemicals
industry. Their manufacture amounts to thousands of tonnes per week.
Heavy chemicals include tetraoxosulphate (iv) acid [most important],
lime, caustic soda, caustic potash disodium trioxocarbonate (iv),
trioxonitrate (v) acid and bleaching powder. They are used in the
manufacture of glass; the processing of textiles, both natural fibres,
such as cotton, linen and wool, and artificial fibres, such as nylon,
rayon and Terylene; the manufacture of soaps; the manufacture of
metals and paints, to mention but a few uses. Besides their uses in
general industry, heavy chemicals are also used in all branches of
chemical industry as reagents for the various processes in the
manufacture of the final product.
On the other hand, fine chemicals are less often used than heavy
chemicals. However, tens of tonnes are produced monthly to meet
consumers needs. They are of higher purity than the heavy chemicals.
They include dyes, analytical reagents, photographic chemicals,
additives for fuels and paints, cosmetics and perfumes. They are more
expensive than the heavy chemicals.