Potassium Chromate


Potassium chromate (K2CrO4 ) is a yellow chemical indicator used for identifying concentrations of chloride ions in a salt solution with silver nitrate.


Potassium chromate is an inorganic oxidizing agent. As a compound with a relatively unique profile, potassium chromate has a number of uses in industrial and scientific contexts. However, due to its toxicity, you should limit your exposure to potassium chromate.


Potassium chromate has a distinct bright-yellow color but no odor. This odorless nature becomes problematic when you have exposed yourself to this chemical due to its toxicity. In many cases, you may not realize that you inhaled potassium chromate. Further, inhaling this chemical poses several risks. Potassium chromate is also soluble in water, but not in alcohol, and exists in the form of a powder.


Primary Uses of Potassium Chromate

Potassium chromate enjoys a wide variety of industrial uses. In the textile industry, manufacturers use potassium chromate to tan leather and dye clothing items and fabrics. In science, potassium chromate is often used as an indicator, meaning it can identify the presence, location and quantity of certain elements such as iron. Beyond these applications, potassium chromate also functions as an oxidizing agent in manufacturing and scientific experiments.



Potassium chromate is very toxic and may be fatal if swallowed. It may also act as a carcinogen, and can create reproductive defects if inhaled or swallowed. It also is a strong oxidizing agent if in the presence of H+ to produce the dichromate ion. It may react rapidly, or violently. It is also possible that it may react explosively with other reducing agents and flammable objects.