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Chromic Acid Extra Pure, commonly supplied in solid form as chromium trioxide, is an inorganic chromium(VI) compound with the molecular formula CrO3. It is a powerful oxidizing agent used in selected chemical synthesis, oxidation-reduction investigations, and specialized laboratory procedures. Chromium trioxide typically appears as reddish-brown to dark red crystalline flakes or crystals and dissolves readily in water, forming acidic solutions containing chromium(VI) species. Its strong oxidizing properties make it relevant to organic chemistry research, inorganic chemical investigations, and studies of oxidation reactions under controlled conditions. The 1 kg pack is intended for laboratories with established reagent requirements and appropriate chemical safety infrastructure. Chromium trioxide is highly hazardous, corrosive, acutely toxic, and carcinogenic; its use requires stringent exposure controls, compatible storage arrangements, and trained personnel. Selection must be based on the intended method and applicable safety requirements.
Product Specifications
| Specification | Details |
|---|---|
| Appearance | Reddish-brown crystalline flakes |
| Assay | 99% |
| Chemical Name | Chromium trioxide |
| Alternate Names | Chromic acid anhydride, chromium(VI) oxide, chromic anhydride |
| Molecular Formula | CrO3 |
| Empirical Formula | CrO3 |
| CAS Number | 1333-82-0 |
| Molecular Weight | 99.99 g/mol |
| Grade | LR Laboratory Reagent |
Key Features of Chromic Acid
- Strong oxidizing agent: Chromium trioxide contains chromium in the +6 oxidation state and participates in powerful oxidation reactions under suitable conditions.
- Distinctive physical appearance: The compound occurs as reddish-brown to dark red crystalline flakes or crystals.
- High water solubility: It dissolves in water, producing acidic solutions containing chromium(VI) species.
- Specialized laboratory reagent: It is used in selected oxidation procedures and chemical investigations where chromium(VI) chemistry is specifically required.
- Defined chemical identity: Its formula, CAS number, and molecular weight support accurate identification and reagent calculations for appropriate laboratory methods.
Laboratory Applications of Chromic Acid
- Organic oxidation reactions: Chromium trioxide is used in selected oxidation procedures involving suitable organic substrates under controlled conditions specified by the experimental method.
- Inorganic chemistry investigations: Supports advanced studies of chromium(VI) compounds, oxidation states, and redox behaviour in suitably equipped laboratories.
- Oxidation-reduction research: Used in controlled investigations examining oxidizing strength, electron-transfer reactions, and chemical reaction mechanisms.
- Chemical synthesis research: Applied in specialized synthesis procedures where chromium trioxide is an explicitly specified oxidizing reagent and safer alternatives are unsuitable.
- Advanced laboratory education: May be used in appropriately authorized demonstrations of oxidation chemistry by trained personnel under stringent exposure controls; it is not appropriate for routine unsupervised school practicals.
Why Choose Lab Wale to Buy Chromic Acid
Lab Wale provides a sourcing option for laboratory chemicals and scientific supplies used by universities, research centres, analytical facilities, and other institutions. When purchasing Chromic Acid Extra Pure, verify the chemical identity, grade, pack size, and applicable specifications against the intended procedure. Review the available technical and safety documentation before procurement, particularly because chromium trioxide presents serious occupational and environmental hazards. The 1 kg pack should be selected only where the required quantity, authorized use, trained personnel, and appropriate storage and exposure-control facilities are available.
Frequently Asked Questions About Chromic Acid
What is Chromic Acid Extra Pure commonly supplied as?
Solid products sold under this name commonly contain chromium trioxide (CrO3), also known as chromic acid anhydride. When dissolved in water, chromium trioxide forms an acidic solution containing chromium(VI) species. The solid compound and aqueous chromic acid should not be treated as identical product forms when checking specifications.
What is the molecular formula and molecular weight of Chromic Acid sold as chromium trioxide?
Chromium trioxide has the molecular formula CrO3 and a molecular weight of approximately 99.99 g/mol. Its empirical formula is also CrO3 because the elemental ratio cannot be simplified further. These values apply to the solid chromium trioxide compound rather than to an aqueous chromic acid solution.
What is the CAS number of chromium trioxide?
The CAS Registry Number for chromium trioxide is 1333-82-0. This identifier is widely used for the solid compound marketed under names such as chromic acid anhydride and chromium(VI) oxide. Verify the chemical name, formula, and identifier when purchasing the reagent or reviewing its safety information.
What is Chromic Acid used for in chemical laboratories?
Chromium trioxide is used as a strong oxidizing agent in selected organic synthesis procedures and specialized redox investigations. Because it contains carcinogenic chromium(VI), its use requires careful assessment of the method, exposure risks, waste handling, and applicable institutional restrictions. Less hazardous alternatives should be considered where technically suitable.
How should Chromic Acid be stored and handled safely?
Store chromium trioxide in a compatible, tightly closed container in a designated, dry, secure area, segregated from combustible materials, organic substances, reducing agents, and other incompatible chemicals. Prevent dust exposure and contact with skin and eyes. Use appropriate engineering controls, trained personnel, and chromium(VI)-specific waste procedures.
Storage Conditions for Chromic Acid
Store chromium trioxide in its original, tightly closed, chemically compatible container in a cool, dry, well-ventilated, designated oxidizer storage area. Keep it segregated from combustible and organic materials, reducing agents, and other incompatible substances. Protect the container from contamination and unauthorized access. Follow the product-specific Safety Data Sheet and institutional requirements for hazardous chromium(VI) compounds.
Precautions for Handling Chromic Acid
Review the current Safety Data Sheet and institutional risk assessment before handling chromium trioxide. It is highly toxic, corrosive, carcinogenic, and a powerful oxidizer. Avoid all dust exposure and direct contact, and use suitable chemical-resistant protective equipment and properly designed engineering controls appropriate for chromium(VI). Prevent contact with organic or combustible materials, never mix it with incompatible chemicals, and manage spills and chromium-containing waste through trained hazardous-materials personnel using approved procedures. Restrict use to trained, authorized laboratory personnel.


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