Ammonium chromate
Ammonium chromate, CAS 7788-98-9, with the molecular formula (NH₄)₂CrO₄ and a molecular weight of 152.07 g/mol, presents as yellow needles. It is recognised for its utility as a reagent in chemical synthesis, specifically for preparing solid heterogeneous oxidizing agents for liquid-phase alcohol oxidation. This compound serves various industrial and research applications, underpinned by its specific chemical properties.
- IUPAC
- Chromic acid ammonium salt
- Synonyms
- Chromic acid ammonium salt
Oxidising Agent Preparation
Ammonium chromate serves as a key reagent in the synthesis of solid heterogeneous oxidising agents. These agents are employed in the liquid-phase oxidation of alcohols, offering a controlled and selective reaction pathway in organic chemistry.
Chemical Synthesis
As a chromium(VI) compound, ammonium chromate can participate in various redox reactions. It is utilised in laboratory settings for specific synthetic procedures requiring controlled oxidation capabilities.
Materials Science Research
Within materials science, ammonium chromate may be investigated for its potential role in the development of new materials or surface treatments, leveraging its inorganic salt properties.
| Molecular weight | 152.07 |
|---|---|
| Linear formula | (NH4)2CrO4 |
| Assay | 98% |
| Form | needles |
| Density | 1.91 g/mL at 25 °C(lit.) |
| Application | Reagent for the preparation of a solid heterogeneous oxidizing agent for liquid phase oxidation of alcohols.1 |
Hazard statements
- H272May intensify fire; oxidiser
- H314Causes severe skin burns and eye damage
- H334May cause allergy or asthma symptoms if inhaled
- H350I
- H400Very toxic to aquatic life
Precautionary statements
- P201Obtain special instructions before use
- P220Keep away from clothing and combustible materials
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3085 8(5.1) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | O,T,N |
| Risk statements (R) | 49-8-34-43-50/53 |
| Safety statements (S) | 53-17-26-36/37/39-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Ammonium chromate used for?
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Ammonium chromate is primarily used as a reagent for preparing solid heterogeneous oxidising agents, which are applied in the liquid-phase oxidation of alcohols. It also finds use in broader chemical synthesis and materials science research.
What is the CAS number and formula for Ammonium chromate?
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The CAS number for Ammonium chromate is 7788-98-9, and its chemical formula is (NH₄)₂CrO₄.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ammonium chromate with an assay of 98%. This product is suitable for research and industrial applications. Tech Serve Solutions does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Ammonium chromate be handled safely?
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Ammonium chromate is a strong oxidiser and is corrosive, potentially causing severe skin burns and eye damage. It can also cause respiratory irritation and is suspected of causing cancer. Handle with extreme care, using appropriate personal protective equipment including gloves, eye/face protection, and respiratory protection (e.g., N100 respirator). Ensure adequate ventilation and avoid contact with combustible materials. Refer to the Safety Data Sheet for comprehensive handling instructions.
Is Ammonium chromate a controlled substance?
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Information regarding controlled substance status for Ammonium chromate (CAS 7788-98-9) is not provided in the product data. Please consult relevant local and international regulations for definitive information.
How is Ammonium chromate packaged and shipped?
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Ammonium chromate is shipped according to relevant transport regulations, indicated by UN 3085, Class 8(5.1), Packing Group II. TSS ensures appropriate packaging for safe export and transit.
How can I request a sample or quote for Ammonium chromate?
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To request a sample or a quotation for Ammonium chromate, please contact the TSS sales department via the website or designated contact channels, providing your specific requirements.
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