Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full Name: Chromium(III) Oxide
- Aliases: Chromia, Green Chrome Oxide, Chromium Sesquioxide
- CAS Number: 1308-38-9
- EINECS: 215-160-9
- Molecular Formula: Cr2O3
- Molecular Weight: 151.99
- Chemical Classification: Inorganic metal oxide, green inorganic pigment, refractory raw material, polishing abrasive
- Core Advantages
Stable hexagonal crystal structure, excellent light resistance, weather resistance, acid & alkali resistance, high melting point. Non-fading green pigment, widely used in coatings, ceramic glaze, refractory bricks, polishing powder, color glass and cosmetic coloring industries; available in industrial grade, high-purity electronic grade and cosmetic grade.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: Fine bright green crystalline powder
- Odor: Odorless
- Solubility: Insoluble in water, alcohol, dilute acid; soluble in hot concentrated perchloric acid, molten alkali
- Density (20℃): 5.22 g/cm3
- Melting Point: 2435 °C
- Boiling Point: 4000 °C
- Hardness: High hardness, good polishing performance
- Light Stability: Zero fading under long-term sunlight irradiation
2.2 Chemical Properties
- Oxidation State Stability: Cr3+ stable at room temperature; strong oxidizing environment converts partial Cr3+ to hexavalent chromium
- Acid & Alkali Resistance: Inert to dilute acid and weak alkali; only reacts with strong acid under heating or molten strong base
- Refractory Performance: Ultra-high melting point, does not soften at high temperature, excellent thermal insulation and fire resistance
- Catalytic Activity: Can be used as catalyst carrier for hydrogenation and oxidation reactions
- Compatibility: Compatible with most inorganic pigments, ceramic raw materials; avoid mixing with strong oxidants at high temperature
3. Main Application Fields
3.1 Coating & Paint Industry (Core Usage)
Weather-resistant green pigment for exterior wall coatings, anti-corrosion industrial paint, camouflage coating, powder coating. Excellent anti-ultraviolet performance, long service life outdoors.
3.2 Ceramic & Glass Industry
Colorant for ceramic glaze, art porcelain, green glass, enamel products; high temperature resistant, no color change during kiln firing.
3.3 Refractory Material
Raw material for high-temperature chromium-aluminum refractory bricks, furnace lining, thermal insulation parts for steel and metallurgical kilns.
3.4 Polishing & Abrasive Materials
Superfine chromium oxide polishing powder for stainless steel, jewelry, optical glass, watch case mirror polishing, high polishing brightness.
3.5 Cosmetic & Electronic Industry
Cosmetic grade used as inorganic color additive for eye shadow and makeup; high-purity grade for semiconductor substrate, lithium battery electrode additives.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 1308-38-9 |
| Molecular Formula | Cr2O3 |
| Molecular Weight | 151.99 |
| Appearance | Bright green fine powder |
| Melting Point | 2435 °C |
| Main Content | Industrial Grade ≥99.0%; Cosmetic Grade ≥99.5% |
| Water Soluble Matter | ≤0.10% |
| Water Content | ≤0.30% |
| Hexavalent Chromium Content | ≤10 ppm (cosmetic grade) |
| Bulk Package | 25kg woven bag with PE inner liner |
| Sample Package | 1kg / 5kg sealed plastic bag |
| Storage Requirements | Sealed dry warehouse ≤30℃; isolate acid, strong oxidants to avoid hexavalent chromium generation |
| Transportation Rule | General inorganic oxide raw material, non-hazardous goods, waterproof packaging required |
| Shelf Life | 36 months under intact sealed packaging |
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