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.
Basic Information
Product Name: Calcium stearate
CAS Number: 1592-23-0
Alias: Calcium octadecanoate
Molecular Formula: C36H70CaO4
Molecular Weight: 607.02
IUPAC Name: calcium dioctadecanoate
Structural Information
- Structure Type: Metal soap, long-chain saturated fatty acid calcium salt
- Structural Features: One calcium ion combines with two stearate anions; long alkyl hydrophobic chain, carboxylate hydrophilic group, excellent lubrication, anti-caking and water repellent properties
Physical & Chemical Properties
- Appearance: White fine powder
- Odor: Faint characteristic fatty odor
- Melting Point: 148–155 °C
- Solubility: Insoluble in water, ethanol, ether; soluble in hot benzene, hot vegetable oil, hot mineral oil
- Stability: Stable at room temperature; decomposes under strong acid to generate stearic acid and calcium salt; heat resistant under plastic processing temperature, non-toxic under normal usage
Synthesis & Applications
Production Method
- Double decomposition method: Sodium stearate aqueous solution reacts with calcium chloride solution, filter, wash and dry
- Direct fusion method: Stearic acid reacts with calcium oxide/calcium hydroxide under heating
Main Applications
- Plastic processing auxiliary: Lubricant, release agent, heat stabilizer for PVC, PE, PP
- Rubber additive: Anti-caking agent, smoothing agent for rubber products
- Food additive: Anti-caking agent for powder food, flour, milk powder (food grade)
- Pharmaceutical & cosmetic excipient: Lubricant for tablet pressing, thickener for ointment
- Building material additive: Waterproof agent for putty, coating flatting agent
Safety & Storage Instructions
- Hazard Classification: Low toxicity, slight dust irritation
- Personal Protection: Dust mask and nitrile gloves during powder operation, ventilated environment
- Storage Condition: Hermetically sealed, cool dry warehouse, moisture-proof, isolate strong acid
- Transportation: General industrial/food additive, avoid dampness and extrusion
Quality Specifications
- Stearate content: ≥98.0%
- Calcium content: 6.0–7.0%
- Loss on Drying: ≤2.0%
- Free acid: ≤0.5%
- Heavy Metal (Pb): ≤10 ppm (food grade)
Information Summary Table
| Item | Specification |
| CAS Number | 1592-23-0 |
| Product Name | Calcium stearate |
| Synonym | Calcium octadecanoate |
| Molecular Formula | C36H70CaO4 |
| Molecular Weight | 607.02 |
| Appearance | White fine powder |
| Melting Point | 148–155°C |
| Solubility | Insoluble in water, soluble in hot organic oil solvents |
| Purity Standard | ≥98.0% |
| Storage Condition | Sealed cool dry storage, keep away from strong acid |
| Hazard Property | Low toxicity, dust slightly irritates respiratory tract |
| Main Usage | Plastic lubricant/release agent, food anti-caking agent, tablet lubricant, rubber smoothing additive |
...
Product
