Calcium stearate is a white, nontoxic powder that is insoluble in water and ethanol but soluble in hot organic solvents and acids.
Molecular formula: Ca(C17H35COO)2
Molecular weight: 606
CAS No.: 1592-23-0
EC No.: 216-472-8
Calcium stearate is a versatile fatty acid salt primarily derived from palm oil-based stearic acid and calcium salts. Widely used across various industries, this compound functions as an effective stabilizer, lubricant, dispersant, and release agent, enhancing both product quality and processing efficiency. The material presents as a white, safe-to-handle powder that is insoluble in water and ethanol but soluble in hot organic solvents and acids.
1. Good dispersing properties;
2. Good mold-releasing properties;
3. Good thermal stability.
1. Halogen Absorber Agent for Petrochemicals
Calcium stearate plays a critical role in the chlorination processes of polyethylene and polypropylene within the petrochemical industry. By effectively absorbing halogens, it ensures optimal polymerization and improves the final product’s properties.
2. Lubricant and Mold Releasing Agent for Resin Compounds
In unsaturated polyester resin molding compounds, calcium stearate significantly enhances production efficiency by functioning as both a lubricant and mold release agent.
3. Stabilizer for PVC Products
When combined with other neutral salts, calcium stearate provides stabilizing effects in PVC plasticizers. It prevents product degradation during processing and extends the lifespan of end products such as pipes, films, and sheets.
4. Dispersing Agent and lubricant in Color Masterbatch
Thanks to its exceptional dispersing and lubricating properties, calcium stearate serves as a vital component in color masterbatch production. It ensures strong pigment dispersion and smooth processing.
5. Adhesion Preventive in Rubber Products
The rubber industry widely uses calcium stearate as an adhesion preventive. For instance, in rubber sole manufacturing, it prevents layers from sticking together (“blocking”), facilitating easier handling and improving product quality.
6. Water-Proofing Agent for Textiles
In textile applications, calcium stearate acts as an effective waterproofing agent. It imparts durable water repellency to fabrics while maintaining their breathability and texture.
Product | Calcium Stearate | Calcium Stearate | Calcium Stearate | |
Profile | CV500 | CV500W | CV520 | |
Appearance | White Powder | White Powder | White Pellets | |
Metal Content (Ca, %) | 6.7~7.5 | 6.6~7.2 | 6.6~7.0 | |
Free Fatty Acid (%) | ≤1.0 | ≤0.5 | ≤0.5 | |
Volatile Matter at 105℃ (%) | ≤3.0 | ≤3.0 | ≤3.0 | |
Melting Point (℃) | 149~160 | 147~160 | 149~160 | |
Bulk Denisty (g/L) | 220~300 | 300~400 | ≥400 | |
Sieve Rate (%) | 99% pass through 200 mesh | 99% pass through 200 mesh | — | |
Applications | PE | ● | ⊗ | ● |
PP | ● | ⊗ | ● | |
PVC | ● | ● | ⊗ | |
ABS | ● | ⊗ | ● | |
CPE | ◎ | ◎ | ● | |
BMC/SMC | ● | ⊗ | ⊗ | |
Packaging | 20 kg/bag | 25 kg/bag | 25 kg/bag | |
Note:
● Excellent, recommended use
◎ Good, applicable
⊗ Not recommended to use
— Not Applicable
The advised dosage is 0.1%~6.0% except PVC stabilizer recommended formula, detail dosage will be advised and fixed by detail formula, can provide differentiated products or solutions according to customer requirements.
Storage and transport under a shady, cool, and ventilated environment; Avoid acid, alkal, and corrosive substances. Keep it away from the humidity, hotness, fire, and corrosion.
Yes. Currently there are mainly vegetable-based and animal-based calcium stearate, while Hancore Lubricant LLC produces vegetable-based calcium stearate, which is in line with the concept of environmental protection and sustainable development.
In accordance with Directive 1999/45/EC, calcium stearate belongs to not dangerous.
Noted that the product can burn.
According to the MSDS, this product can invade the human body through the skin, eyes, or breathing. This may cause harm to people. What’s more, long-term inhalation of calcium stearate powder may cause changes in lung fibrosis of pneumoconiosis.