Description

Silver Stearate is a metallic soap of stearic acid, a fine white to off-white powder with the CAS registry number 3507-99-1. This compound is valued for its unique combination of lubricating properties, thermal stability, and antimicrobial activity derived from its silver content. It serves as a critical functional additive in industries requiring high-performance materials, including polymer manufacturing, specialty coatings, and advanced lubricants.

Application

• Polymer & Plastic Additive: Acts as a lubricant, release agent, and acid scavenger in PVC processing and other thermoplastic formulations.
• Specialty Greases & Lubricants: Used as a thickener and performance additive in high-temperature and waterproof greases.
• Antimicrobial Coatings: Imparts long-lasting antibacterial and antifungal properties to paints, textiles, and surface treatments.
• Cosmetics & Personal Care: Functions as an opacifying agent and texture modifier in certain cosmetic preparations.
• Catalyst & Reagent: Employed as a precursor or catalyst in specific organic synthesis and nanomaterial production.
• Powder Metallurgy: Serves as a binder and lubricant in the compaction of metal powders.

Basic Information

Product Name	Silver Stearate
CAS No.	3507-99-1
Molecular Formula	C18H35AgO2
Molecular Weight	391.33 g/mol
Synonyms	Octadecanoic acid, silver salt; Silver(I) stearate; Stearic acid, silver salt; Argentous stearate; Silver octadecanoate; Metallic soap of stearic acid
EINECS	222-505-8

Quality Control

Our Silver Stearate is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity, composition, and performance. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, heavy metal content, and loss on drying. We adhere to relevant industry standards and can support compliance requirements for specific applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Conforms to structure
Assay (Ag content)	27.0 - 28.5 %
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Acid Value	≤ 2.0 mg KOH/g
Particle Size (D50)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.