Calcium stearate (CAS 1592-23-0) is a metal soap with 99 % purity, a melt point of 145‑160 °C and moisture content not exceeding 2 %. Chemically it is the calcium salt of stearic acid, formed by neutralising the fatty acid with calcium hydroxide, which gives it both lubricating and surface‑active properties. The commercial grade typically contains 6.5‑7.5 % active ingredient, providing reliable lubrication and anti‑adhesion in pulp processing. When added to cellulose suspensions, calcium stearate creates a thin hydrophobic film on the fiber surface, improving sheet press glide, reducing dust generation and enhancing coating uniformity. The reduced inter‑fiber friction also allows higher machine speeds without compromising paper quality. In PVC formulations it works as a secondary plasticizer, compatible with conventional phthalate plasticizers, increasing flexibility and improving crack resistance at low temperatures. It is often blended with glycerol, polysorbate‑80 and vegetable oils in cosmetic emulsions, where it stabilises the oil‑in‑water system, prevents phase separation and contributes to a smooth skin‑feel. In construction mixes, calcium stearate is used in waterproofing coatings, dry‑mix mortars and asphalt emulsions, where it raises water repellency and lowers adhesion to mould surfaces, facilitating release and reducing surface defects. The product should be stored in a dry, temperature‑controlled environment (5‑25 °C) in sealed containers to avoid moisture uptake, which can diminish its lubricating efficiency. Operators are advised to wear protective gloves and goggles, as fine particles may irritate skin and eyes. Typical dosing levels are 0.1‑0.3 % of the dry pulp weight for paper applications and 0.5‑1.5 % of the total polymer weight for PVC blends, providing the desired flexibility without altering mechanical strength. Global Optimals supplies complete documentation – Technical Data Sheet (TDS), Safety Data Sheet (SDS) and Certificate of Analysis (COA) – ensuring quality control throughout the supply chain.
| Ca | 6.5–7.5% |
| Т пл. | 145–160°C |
| Влажность | ≤2% |
Bags 25 kg
Calcium stearate must be stored in a dry, well‑ventilated area under typical warehouse conditions (approximately 20‑25 °C). Keep the packaging sealed and protected from moisture, water ingress and direct sunlight to avoid hydrolysis and changes in physical properties. When stored as recommended, the product generally retains its quality for 12‑24 months. During handling, wear protective gloves and safety glasses, prevent contact with water or acidic media, and ensure containers are securely positioned to avoid drops and damage to the packaging.
