Stearic Acid, identified by its CAS number 57-11-4, is a saturated fatty acid of significant industrial importance. As a long-chain carboxylic acid (C18H36O2), it typically presents as a white, waxy solid or powder at room temperature. Its unique chemical and physical properties make it an indispensable component in a wide array of manufacturing processes, particularly across various industrial sectors where its specific grades, such as 1820, 1838, 1842, 1860, and 1865, are highly sought after for their consistent quality and performance.

Chemically, Stearic Acid boasts a melting point typically ranging from 67 to 72 °C and a boiling point of 361 °C. It is practically insoluble in water but exhibits good solubility in organic solvents like ethanol and light petroleum. This combination of thermal stability and selective solubility contributes to its versatility and effectiveness in diverse formulations. Produced from both vegetable-based sources, often palm oil, and animal-based raw materials, Stearic Acid is a testament to the power of oleochemicals in modern industry.

The applications of industrial-grade Stearic Acid are remarkably broad. In the rubber industry, it serves multiple critical functions. It acts as an activator for accelerators, playing a vital role in the vulcanization process to improve the mechanical properties of rubber. Furthermore, it functions as an internal lubricant, aiding in the smooth processing of rubber compounds, and as a mold release agent, ensuring efficient demolding of finished products. These properties enhance both production efficiency and the quality of rubber products.

Within the plastics sector, Stearic Acid is valued as an external and internal lubricant. It significantly improves the processability of plastics, particularly PVC, by reducing friction during extrusion and molding, thereby preventing sticking and enhancing surface finish. It also functions as a viscosity depressant, allowing for easier flow and shaping of polymeric materials.

Beyond these primary uses, Stearic Acid finds extensive application in the formulation of lubricants and greases, where it serves as a thickening agent, contributing to the desired consistency and performance of these products. Its mold release properties are also beneficial in processes involving sintering and pressing of ceramic powders, as well as in the production of latex foam. In the textile industry, Stearic Acid, often combined with castor oil, is used to create softeners for textile sizing, imparting a desirable texture to fabrics. For the production of waxes, including candles and buffing compounds, it acts as an activator and thickener, influencing burn characteristics and polishing efficacy.

Additional industrial applications include its role as a release aid and additive in adhesives, a binder in metal polishes and buffing compounds, and a viscosity modifier for oil extraction. It is also a key intermediate in the synthesis of various derivatives such as surfactants, fatty alcohols, EBS waxes, and fatty amines, underscoring its foundational role in the chemical industry.

NINGBO INNO PHARMCHEM CO.,LTD. is a reputable manufacturer and supplier dedicated to providing high-quality industrial-grade Stearic Acid. Our commitment to stringent quality control ensures that our products meet the highest industry standards for purity and performance, supporting diverse industrial needs globally. We understand the critical importance of reliable raw materials for your production processes. For specific product inquiries regarding price or to buy Stearic Acid in various industrial grades, we encourage direct consultation to discuss your requirements and facilitate a seamless purchase. Our team is ready to provide comprehensive support and competitive offerings for your industrial chemical procurement needs.