Description
1. Basic Information
Reagent Name: Chromium (III) Oxide (Chromium sesquioxide; Chromium (III) oxide)
Molecular Formula: Cr₂O₃
Molecular Weight: 151.99
CAS Number: 1308-38-9
2. Product Specifications
Grade Standard: Analytical Reagent (AR Grade), meeting the needs of precise laboratory analysis
Net Content: 500g / bottle, packed in plastic bottle with sealed moisture-proof design
Main Component Content: ≥99.00%, high purity with low impurity content
3. Physical and Chemical Properties
Appearance and Form: Light green to dark green fine hexagonal crystals; turns brown when heated, and returns to green when cooled
Solubility: Easily soluble in hot potassium bromate solution, insoluble in water, acids and alkalis, with stable chemical properties
4. Technical Indicators (Maximum Impurity Content, in %)
| Impurity Item | Indicator |
|---|---|
| Water-soluble Substances | ≤0.1 |
| Chloride (Cl⁻) | ≤0.005 |
| Sulfate (SO₄²⁻) | ≤0.01 |
| Chromium Trioxide | ≤0.005 |
| Iron (Fe) | ≤0.03 |
5. Safety and Storage
Safety Tips: This product is irritant and strictly prohibited for food, feed processing and related contact scenarios; it is recommended to wear protective equipment during operation to avoid direct contact with skin and respiratory tract
Storage Conditions: Store in a cool, dry and ventilated place after sealing, away from humid environment and oxidants, and avoid product deterioration caused by packaging damage
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