Description

Chromic Acid, Ammonium Salt is an inorganic compound primarily used as a powerful oxidizing agent and a source of hexavalent chromium. This material is critical for processes requiring controlled oxidation or the formation of chromate conversion coatings, which provide corrosion resistance and enhance paint adhesion on metal substrates. It serves key roles in the metal finishing, aerospace, and specialty chemical synthesis industries, where precise chemical reactivity is paramount.

Application

• Primary component in the formulation of chromate conversion coatings for aluminum, magnesium, and zinc alloys to prevent corrosion.
• Oxidizing agent in specialty organic synthesis and fine chemical manufacturing.
• Used in the production of wood preservatives and certain pigments.
• Key ingredient in some metal surface treatment and etching solutions.
• Employed in laboratory settings for analytical chemistry and as a reagent.
• Potential use in the manufacture of catalysts for specific industrial processes.

Basic Information

Product Name	Chromic Acid, Ammonium Salt
CAS No.	14445-91-1
Molecular Formula	H3CrNO4 or (NH4)HCrO4
Molecular Weight	118.03 g/mol (for H3CrNO4)
Synonyms	Ammonium Chromate(VI); Ammonium Hydrogen Chromate; Acid Ammonium Chromate; Ammonium Bichromate (related); Chromic Acid, Monoammonium Salt; Ammonium Acid Chromate; UNII-9F6S5178V6
EINECS	238-411-2

Quality Control

Our Chromic Acid, Ammonium Salt is manufactured under strict process controls to ensure batch-to-batch consistency and high chemical purity. Quality is verified through a comprehensive suite of analytical tests, including assay, identification, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as organic compounds, reducing agents, and strong acids. Due to its oxidizing nature, keep away from heat and sources of ignition. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms
Assay (as CrO3)	Min. 98.0%
Solubility (in Water)	Clear, complete solution
Insoluble Matter	Max. 0.1%
Chloride (Cl)	Max. 0.01%
Sulfate (SO4)	Max. 0.05%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.