For any business relying on chemical inputs, sourcing high-quality materials at competitive prices is a critical operational goal. Stearic Acid, a fundamental compound used across numerous industries including plastics, cosmetics, pharmaceuticals, and rubber, is no exception. Procurement managers often face the challenge of balancing cost-effectiveness with consistent product quality and reliable supply. This guide aims to provide essential insights for buyers looking to purchase Stearic Acid, with a focus on understanding quality parameters, pricing factors, and selecting a dependable supplier. As a leading manufacturer in China, we at NINGBO INNO PHARMCHEM CO.,LTD. are committed to meeting these buyer needs.

Stearic acid (C18H36O2) is a saturated fatty acid typically appearing as a white waxy solid. Its quality is primarily determined by its purity, derived from factors such as its processing method and the source of raw materials (animal fats or vegetable oils).

Key Quality Indicators for Stearic Acid

When evaluating Stearic Acid, several technical specifications are crucial:

  • Acid Value (mg KOH/g): This measures the amount of free fatty acids present. A higher acid value might indicate less pure material or partial hydrolysis. For most industrial applications, values between 205-212 mg KOH/g are common.
  • Saponification Value (mg KOH/g): This indicates the average molecular weight of the fatty acids. Typical values range from 207-212 mg KOH/g.
  • Iodine Value (g I2/100g): This measures the degree of unsaturation. For high-quality Stearic Acid, a low iodine value (often below 1.0 g I2/100g) is desirable, signifying minimal unsaturated fatty acids.
  • Titer (°C) or Melting Point: This refers to the solidification point of the fatty acids. For pure stearic acid, this is around 54-57°C. A narrower range indicates higher purity.
  • Moisture Content (%): Low moisture content (typically ≤ 0.2%) is important to prevent degradation and ensure accurate dosing.
  • Color (Hazen/APHA): A low color value (e.g., ≤ 120 Hazen) indicates a cleaner product, important for aesthetic-sensitive applications.

Understanding these parameters is essential when comparing offerings from different suppliers. For instance, a buyer looking for Stearic Acid for PVC lubrication might prioritize a low iodine value and specific titer range for optimal processing.

Factors Influencing Stearic Acid Pricing

The price of Stearic Acid is influenced by several factors, including:

  • Raw Material Costs: Fluctuations in the prices of palm oil, tallow, or other fat sources directly impact production costs.
  • Purity and Grade: Higher purity grades and specialized grades (e.g., pharmaceutical or food grade) command higher prices than technical grades.
  • Production Capacity and Scale: Large-scale manufacturers often benefit from economies of scale, leading to more competitive pricing.
  • Geopolitical Factors and Supply Chain: Global trade dynamics, shipping costs, and regional availability can affect pricing.
  • Order Volume: Bulk purchases typically benefit from lower per-unit pricing.

When seeking to buy Stearic Acid, it is advisable to obtain quotes for different quantities and grades to identify the best value proposition for your specific application.

Choosing a Reliable Stearic Acid Supplier

Selecting the right supplier is as crucial as selecting the right product. Consider these points:

  • Technical Expertise: Does the supplier understand your application needs and offer appropriate guidance?
  • Quality Control: Do they have robust quality control measures and provide Certificates of Analysis (CoA)?
  • Supply Chain Reliability: Can they ensure consistent delivery and manage supply chain disruptions?
  • Customer Service: Are they responsive to inquiries and issues?
  • Compliance and Certifications: Do they adhere to relevant industry standards and regulations?

NINGBO INNO PHARMCHEM CO.,LTD. is a premier manufacturer and supplier of Stearic Acid in China, dedicated to providing high-quality products that meet rigorous industrial standards. We offer competitive pricing and reliable supply chain solutions. Contact us today to discuss your requirements and obtain a quote for your Stearic Acid needs.