Product Introduction
Chromium(VI) oxide, commonly known as Chromic acid or Chromic anhydride (CAS 1333-82-0), is a powerful inorganic oxidant and the primary source of chromium for industrial surface treatments. It typically appears as dark red or purple-red deliquescent flakes or granules. Chromium(VI) oxide (CAS 1333-82-0) is highly soluble in water, forming a solution that is widely utilized in the electroplating industry to provide metals with a hard, corrosion-resistant, and aesthetically pleasing finish. Due to its strong oxidizing properties, it also plays a critical role in the synthesis of organic chemicals and the preservation of timber products.
Product Selling Points
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High Purity Grade: Our standard assay is $\ge$ 99.7%, ensuring superior performance in sensitive plating baths and chemical synthesis.
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Superior Solubility: Produced in flake form to ensure rapid and complete dissolution, reducing preparation time in industrial processes.
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Low Impurity Profile: Strictly controlled levels of sulfates and nitrates to prevent equipment corrosion and plating defects.
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Consistent Oxidation Power: A reliable reagent for the preparation of Jones Reagent and other laboratory-scale oxidation processes.
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Proven Durability: Enhances the hardness and wear resistance of automotive and aerospace components through high-quality chroming.
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Global Logistics: Securely packaged in UN-approved specialized drums for safe international transit and storage.
Applications
Electroplating and Metal Finishing
This product is the essential component for hard chrome and decorative chrome plating. It provides a protective layer that increases the hardness, wear resistance, and corrosion protection of hydraulic cylinders, engine valves, and automotive trim.
Wood Preservation
It is used in the formulation of Chromated Copper Arsenate (CCA) and other wood treatment chemicals to protect timber against rot, fungi, and wood-boring insects in outdoor construction.
Catalyst Manufacturing
CrO3 serves as a precursor for various chromium-based catalysts used in the petrochemical industry, particularly in the production of polyethylene and the synthesis of ammonia.
Organic Chemical Synthesis
In laboratory and industrial settings, it is a key oxidant for converting alcohols to ketones or carboxylic acids and is the primary ingredient in cleaning solutions for laboratory glassware.
Packaging
Standard industrial packaging options for Chromium(VI) oxide include:
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50kg airtight steel drums with plastic inner liners (UN-Approved for hazardous materials).
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25kg specialized plastic pails for smaller-scale manufacturing requirements.
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1000kg palletized loads with secure shrink-wrapping for bulk maritime transport.
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Sample packaging available in 500g or 1kg glass jars for lab testing.
Storage
Chromium(VI) oxide is a strong oxidizing agent and a toxic substance. It must be stored in a cool, dry, and strictly isolated warehouse. Keep containers tightly sealed and protected from moisture, as the flakes are deliquescent. Store away from combustible materials, organic substances, strong bases, and reducing agents. Ensure the storage area has acid-resistant flooring and is equipped with proper emergency containment and ventilation systems.
Related and Similar Products
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Sodium Dichromate – CAS 10588-01-9
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Potassium Dichromate – CAS 7778-50-9
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Chromic Sulfate – CAS 10101-53-8
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Chromic Chloride – CAS 10025-73-7
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Chromium(III) Oxide – CAS 1308-38-9
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Ammonium Dichromate – CAS 7789-09-5
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Barium Chromate – CAS 10294-40-3
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Zinc Chromate – CAS 13530-65-9
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Lead Chromate – CAS 7758-97-6
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Silver Chromate – CAS 7784-01-2
FAQ
Electroplating and Metal Finishing
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Q1: What causes “burning” in a chrome plating bath using CrO3? A1: Burning is often caused by an imbalance in the ratio of Chromium(VI) oxide to sulfates or by excessively high current densities. Maintaining high-purity CrO3 helps stabilize the bath.
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Q2: Is a catalyst required when using Chromium(VI) oxide for plating? A2: Yes, a small amount of sulfuric acid or specialized fluoride-based catalysts is typically required to initiate the deposition process.
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Q3: How do you handle the high acidity of the dissolved flakes? A3: Always add the flakes to water (never water to the flakes) while wearing full acid-resistant PPE, as the dissolution process is exothermic and highly acidic.
Safety and Environmental Handling
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Q1: Is Chromium(VI) oxide considered a carcinogen? A1: Yes, it is classified as a Group 1 human carcinogen. Strict adherence to local safety regulations, including the use of closed systems and respirators, is mandatory.
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Q2: What is the proper procedure for neutralizing a CrO3 spill? A2: Spills should be treated with a reducing agent (like sodium bisulfite) to convert the toxic Hexavalent Chromium to the less toxic Trivalent state, followed by neutralization with lime.
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Q3: Can the empty drums be reused? A3: No, drums that contained CrO3 are considered hazardous waste and must be disposed of or recycled by certified industrial waste handlers.
