Dura®, Durachrome®, are trade names of Plating Resources, Inc. Copyright and all other World Rights Reserved, 1990, 1995, 2014.





The purity of industrial grade chromic acid has generally suffered as domestic and international producers compete for market share. Contaminants such as sulfate, chloride, iron, cooper and even insoluble materials are now common. These contaminants may not be significant in other applications, but they become very important to high quality hard chromium plating. This is especially true when ZERO Discharge Recovery is used.

HCP grade chromic acid is manufactured to our stringent specifications. It is intended for use where quality is of prime importance. In addition, HCP grade chromic acid is a non dusting material that is also very easy to pour and resists caking. It is much more user friendly than the typical flake material is. Each batch is assayed to our stringent standards.

HCP Grade
Other Grades
Chromic Acid (CrO3)
Chlorude (Cl)
Sulfate (So4)
Iron (Fe)
Copper (Cu)
Other Metals

Other Data:  
Formula: Cr0 3, when dissolved in water yields H 2Cr 2O 7
Synonyms: Chromium Trioxide, Chromic Anhydride
Containers: 110 pound full open head (FOH) steel drums with a gasket seal.
  Form: Deliquescent flakes
  Density: 87 lbs. /cu. ft. (approx)
  Molecular Weight: 99.99
  Specific Gravity: 2.70
  Melting Point: 197 0 C.
  Volitization: 110 0 C. (approx)
  Heat of Solution: 2467 cal. /mol.
  Solubility in 100 c.c.’s H 2O: 164.9 grams @ 0 0 C.
206.7 grams @ 100 0 C.
  Metal Available: 16.87 grams/sq. ft./0.011"

HCP Grade Chromic Acid is unconditionally warranted as to the purity specified. A replacement of unused material will be made and any plating bath so damaged will be replaced on a no charge basis.

HCP Grade Chromic Acid is an industrial product and must be handled and treated as such. Read and understand the MSDS prior to use or handling this material. Chromic acid is a strong oxidizer so contact with organic materials and reducing agents must be avoided. Contact with the skin and eyes must also be avoided. In case of such personal contact, flush with copious amounts of water. For eyes, flush with water and seek immediate medical attention. Avoid breathing any mist or dust that may be generated from handling or using this chemical

This process uses industrial strength chemicals which must be handled carefully and in accordance with the directives provided in the individual MSDS forms. Read and understand the MSDS on all of these chemicals before handling or using. Ensure that all regulatory standards are followed and limit personal exposure as required for Cr(VI) and other chemicals by OSHA.

Avoid personal contact with these chemicals, avoid splashing and avoid breathing any fumes released during operation. Do not inhale any dust, mist or vapors from these chemicals. Do not allow these products to contact the skin or eyes. In case of contact, flush immediately with large amounts of fresh water and seek immediate medical attention. Wear protective clothing such as aprons, gloves, face masks and respirators. Be sure that adequate eyewashes and emergency showers are available nearby before handling or using any of these chemicals. Designated work clothing should be worn while using these chemicals and the worker(s) should thoroughly shower and change into fresh-clean street clothing before going home. Decontaminate all work clothing before reuse. The user is responsible for providing adequate work clothing, personal protection, limiting personal exposure and providing any required clean-up, decontamination as well as any needed medical attention.