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Setting the standard
Our unique manufacturing processes create new standards for chromic acid quality.
The proprietary grade CA Ultra has been treated so that it is virtually dust-free in applications and the thin structure of the standard flake product gives exceptional dissolving rates.
Chromic acid is used as one ingredient in the preparation of wood preservatives
and the chrome plating process.
Full technical details of CA Ultra and standard grade US
Elementis Chromium's high quality chromic acid crystals have been further
developed to create a new product, CA21 - Chromic acid for the 21st century.
Plating applications
Chromium plating is the most visible of the applications using chromic
acid as an ingredient. A wide range of metals and plastics are electro-plated
to produce a durable, tarnish resistant and high lustre finish. Uses include
domestic appliances, plumbing fixtures, automobile accessories and hospital
equipment where hygienic, wipe-clean surfaces are essential.
Functional chrome plating, some times referred to as hard chrome plating,
is applied in much thicker layers for heavy industrial applications. It
increases wear and corrosion resistance whilst creating a lower friction
co-efficient. Common uses include metal working machinery, engine cylinders,
cutting tools and hydraulic ram coatings.
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Preservation properties
Chromic acid is also used extensively as an ingredient in formulating
industrial wood preservatives. Here it acts as a fixative, binding vital
biocides to the wood which give protection against insect and fungal attack.
In certain climates untreated wood lasts only six months in ground contact,
whereas treated wood can extend this to over 30 years. In fact, estimates
show that chromium-based timber preservatives prevent the destruction
of 250 million trees every year.
Common applications include bridges, wooden foundations and marine piles
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