Colour Chromes Private Limited

Chrome Oxide green is manufactured as a finely ground green powder.

Application

In paints, both oil and cement varieties, particularly for outside applications, to withstand severe weather conditions. Other uses are in the manufacture of linoleum, ceramic glazes, coloured glass, stainless steel electrodes, buffing and polishing compounds and for manufacturing chromium metal

Chromic Acid Flakes is also called Chromium Trioxide or Chromic Acid Anhydride.

This is available in the form of small flakes of dark red or chocolate coloured appearance, which are easy to dissolve in water. It is hygroscopic in nature and forms a saturated of 62.6% CrO₃ at 25 degrees Centigrade. Though it is an acid, dilute solutions of it exert a protective action on metal surfaces like mild steel, zinc, aluminum, copper, brass etc. at room temperature, by the formation of a thin passivating film.

Potassium Chromate is available as small yellow coloured free flowing crystals

Physiological Aspects

Handle all solutions of chromate with gloves on. If it comes in contact with any cuts or bruises on the skin, immediate washing of the affected part with a 5% solutions of sodium bisulphite and then with water is recommended, to prevent the formation of Chrome sores.

Potassium dichromate is available in small orange colored, free-flowing crystals. It is non-hygroscopic, and unlike sodium dichromate dissolves sparingly in water to give a saturated solution of 14% only at 250C.

Application

Its special uses are in the manufacture of safety matches, pyrotechnics and explosives.
Other uses are in printing inks, synthetic perfumery, glues and adhesives, process engraving and lithography, photography and film processing and as an analytical reagent in Laboratories.

Sodium Chromate is available as regular shaped, small yellow coloured crystals. Since it is an efflorescing chemical it dries when exposed to air.

Applications

Used extensively as an anti-corrosive salt in cooling water and chilled brine systems. Also used in inhibitor formulations and manufacture of chrome pigments and other Chromium chemicals.