For procurement specialists and R&D scientists in the chemical industry, a deep understanding of product specifications is vital for ensuring quality and performance. Industrial Grade Calcium Stearate, a cornerstone additive for PVC stabilization and processing, is no exception. As a leading manufacturer and supplier of chemical intermediates in China, we provide detailed insights into the key specifications that buyers should consider when purchasing this essential compound.

The typical CAS number for Calcium Stearate is 1592-23-0, and its molecular formula is Ca(C17H35COO)2. When procuring this material, particularly for demanding applications like PVC stabilization, several technical parameters are critical for guaranteeing efficacy and consistency. These include:

  • Metal Oxide Content: This specification, usually related to the calcium content, is typically around 6.5% ± 0.5%. It directly influences the compound's ability to neutralize acids and act as a stabilizer.
  • Heating Loss (Moisture): A low heating loss, ideally less than or equal to 3.0%, indicates a dry product with minimal water content. Excessive moisture can negatively impact processing and product stability.
  • Free Acid (Stearic Acid): The presence of free stearic acid should be minimal, typically not exceeding 1.0%. High levels of free acid can affect the product's performance and potentially react undesirably in formulations.
  • Specific Gravity: At 25°C, the specific gravity is usually around 1.04. This metric is useful for density calculations in formulation and handling.
  • Melting Point: The melting point of Calcium Stearate is approximately 150 ± 5°C. This characteristic is important for understanding its behavior at processing temperatures.
  • Fineness of Sieve: Ensuring that a high percentage, commonly >=99.0%, passes through a 0.075 mm sieve signifies a fine powder with good dispersibility, crucial for homogeneous mixing in polymers and other formulations.

These specifications are often accompanied by certifications such as ISO9001 and SGS, assuring buyers of a product that has undergone rigorous quality control. When you buy Calcium Stearate from a reputable China supplier, you are investing in a product designed for optimal performance as a PVC additive and a versatile organic chemical intermediate. We pride ourselves on delivering Calcium Stearate that consistently meets or exceeds these critical benchmarks.

For businesses seeking a reliable source for industrial-grade Calcium Stearate, understanding these specifications is the first step. We encourage potential buyers to inquire about these parameters when requesting quotes or samples. As a leading manufacturer committed to quality, we are confident that our Calcium Stearate will meet your stringent requirements for PVC stabilization, waterproof chemicals, and other industrial applications. Contact us today to learn more and secure your supply.