Overview
Calcium stearate is a calcium salt derived from stearic acid, a saturated fatty acid. It is widely used in industrial applications due to its lubricating, water-repellent, and stabilizing properties. This compound is non-toxic and complies with food-contact regulations, making it suitable for packaging and pharmaceutical uses. As a cost-effective additive, calcium stearate enhances processing efficiency in plastics and rubber manufacturing. Its hydrophobic nature also makes it valuable in construction materials like concrete and waterproofing products. The global market for calcium stearate is driven by demand from the polymer and construction industries.
Physical and Chemical Properties
Calcium stearate appears as a fine, white powder with a characteristic waxy texture. It is chemically stable under normal conditions but decomposes at high temperatures, releasing calcium oxide and stearic acid derivatives. The compound exhibits low solubility in water and most organic solvents, except at elevated temperatures. Its melting point ranges between 150-155°C, varying slightly based on purity and manufacturing process. The density of calcium stearate is approximately 1.08 g/cm³, and it has excellent thermal stability up to 200°C, making it suitable for high-temperature processing applications.
Main Applications
In the plastics industry, calcium stearate serves as an acid scavenger, lubricant, and mold release agent, particularly in PVC processing. It prevents adhesion to metal surfaces during extrusion and injection molding. The rubber industry utilizes it as a processing aid and anti-tack agent. Pharmaceutical applications include its use as a tablet lubricant and flow agent in powder formulations. In construction, it acts as a waterproofing agent for concrete and a lubricant in gypsum board production. The cosmetics industry employs calcium stearate in powder formulations for its textural properties.
Safety and Storage
Calcium stearate is generally considered safe for handling, with no significant acute toxicity. However, prolonged exposure to dust may cause respiratory irritation, necessitating proper ventilation or personal protective equipment in industrial settings. The compound should be stored in tightly sealed containers in a cool, dry environment to prevent moisture absorption. Bulk storage requires protection from direct sunlight and extreme temperatures. While non-flammable, decomposition at high temperatures may produce irritating fumes.
B2B Procurement Guide
Industrial buyers should specify technical grade (typically 90-95% pure) or food/pharmaceutical grade (99%+ pure) depending on application requirements. Key procurement considerations include particle size distribution (typically 200-400 mesh), free fatty acid content, and absence of heavy metal contaminants. Reliable suppliers should provide certificates of analysis (CoA) and material safety data sheets (MSDS). Bulk purchases (tonnage quantities) typically offer significant cost advantages, with prices fluctuating based on stearic acid feedstock costs. Just-in-time inventory management is recommended due to potential caking in humid conditions.
Related Manufacturers
- 主营：航空煤油、三氯乙烯、四氢呋喃、乙腈、溶剂油、异丙醇、无水乙醇、磷酸、85%甲酸、氢氧化钠、环己酮、二甲基乙酰胺、二甲基甲酰胺、苯乙烯、环氧氯丙烷、二氯甲烷、二甲苯、丙烯酸甲酯、14丁二醇、正丁醇、三乙胺、正己烷、甲醇、冰醋酸、戊二醛
- 主营：磷酸三甲苯酯、氨基甲酸乙酯、磷酸甲苯二苯酯、脱模十八酸钙盐、甲乙酮肟、四乙基溴化铵、碳酸二丁酯、环烷酸铅、亚硫酸铵、二苯甲酮腙、石油磺酸钠、三乙醇胺、甲醇、乙醇、二甲苯、二氯甲烷、环烷酸铜、氨基甲酸甲酯、单过硫酸氢钾、氯化石蜡、三异丙醇胺、苄基三甲基氯化铵、苄基三乙基氯化铵、四乙基氯化铵、四甲基氯化铵、新癸酸铋
- 主营：石油醚、四氢噻吩、顺酐、苯酐
- 主营：水苏糖、海藻糖、番茄红、十八酸钙盐、精氨酸、酪蛋白、可可棕、冰激凌、牛磺酸、赖氨酸、纤维素、乳糖酶、150油溶、调味品、黄原胶、食用稠、乳酸钙、淀粉钠、增筋剂、半乳糖、海藻酸、魔芋胶、防腐剂、沙蒿胶、牡蛎肽、调味粉
- 主营：二甲基硅油、丙二醇、减水剂、sbs、乙二醇、硅油、vae乳液、双氰胺、三乙醇胺、十二烷基苯磺酸钠、邻苯二甲酸二辛酯、邻苯二甲酸二丁酯、钼酸铵、树脂、活性白土、己二酸、甲酸、聚乙二醇、二甲苯、抗氧剂
- 主营：二甲苯、螯合铁、酵母浸粉、十八酸钙盐、酵母浸膏、四氯乙烯、对苯二胺、蛋白胨、EDDHA-Fe6、多聚甲醛、甘油甲缩醛、黄血盐钠、黄血盐钾、三醋酸甘油酯、硼酸、乙氧基喹啉、亚磷酸、乙醇、硝酸异辛酯、十六烷值改进剂、270号溶剂油、乙酸乙酯、航空煤油、硫化锰、油酸酰胺、蛋氨酸
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、L-蛋氨酸、L-谷氨酰胺、L-瓜氨酸、L-精氨酸、L-赖氨酸、L-酪氨酸、L-亮氨酸、L-色氨酸、L-天门冬氨酸、L-缬氨酸、L-异亮氨酸、L-组氨酸、甘氨酸、γ-氨基丁酸、L-谷氨酸钾、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素D3
- 主营：一乙醇胺、三乙醇胺、油酸钠、十八胺、苯并三氮唑、氨基磺酸、氨基三亚甲基磷酸、水杨酸、硅油、二硫化钼、EDTA系列
- 主营：十八酸钙盐、全氟三丁胺、木质素、吉氏色素
- 主营：润滑剂、高温抗氧剂、sebs755175339901
- 主营：叔碳酸、溶菌酶、海藻糖、十八醛、癸二醇、氨基丙基、氢路噻嗪、邻苯二甲、乙基碳二、羟基癸酸、正十七烷、谷胱甘肽、烷二甲醇、松果体素、vc磷酸酯镁、2-甲基丁醛、朱栾倍半萜、丁烷四乙酸、表面活性剂、癸烷撑二醇、缩水甘油邻、10-羟基羊蜡酸、氢氯噻嗪杂质、盐酸邻菲罗啉、壳聚糖季铵盐
- 主营：海藻酸钠、乳酸链球菌素、卡拉胶、温轮胶、黄原胶、苯丙氨酸、亮氨酸、苏氨酸、谷氨酸、蛋氨酸、牛磺酸、谷氨酰胺、半胱氨酸、酪蛋白酸钠、柑橘黄、羧甲基纤维素钠、聚丙烯酸钠、柠檬酸、氨基丁酸、胍基乙酸、定优胶、L-硒-甲基硒代半胱、干酪素
- 主营：福美钠、五氧化二钒、氨基磺酸、氨基化锂、焦性没食子酸、次氯酸钙、漂粉精、酪蛋白胨、甘油、九水硫化钠、牛油脂肪酸、酵母膏、氟硅酸钠、单乙醇胺、氢氧化钾、氟化钠、氟化钙、氧化铅、油酸钠、偏钒酸铵、氢氧化钡、EVA乳液、二硫化钼、氟化氢钾
- 主营：异辛醇、乳化剂、乙烯醚、十八酸钙、醚羧酸、脂肪醇、分散剂、染色助剂、聚乙二醇、异构醇醚、泊洛沙姆、椰油酰胺、基羟乙基、烷基糖苷、特辛基酚、聚氧乙烯、嵌段聚醚、单油酸酯、异构十三醇、丙烯磺酸钠、氢化蓖麻油、丙烯酰胺基、醇醚葡糖苷、低泡渗透剂、甲酯乙氧基、癸基葡糖苷
- 主营：发泡助剂、橡塑助剂