Description

Octadecylheptamethyltrisiloxane, 95% is a high-purity organosilicon compound, specifically a trisiloxane surfactant with a long alkyl chain. This product is valued for its unique combination of silicone fluid properties and surfactant functionality, making it an effective surface modifier and wetting agent. It is primarily needed by formulators in the personal care, coatings, and agrochemical industries seeking to enhance spreadability, compatibility, and surface activity in their products.

Application

• As a key surfactant and spreading agent in agricultural adjuvants and pesticide formulations.
• As a conditioning agent and emollient in personal care products like hair conditioners and skin creams.
• As a surface modifier and leveling agent in industrial coatings and inks to improve substrate wetting.
• As a compatibilizer and processing aid in silicone-based polymer blends and release coatings.
• As a foam control agent and defoamer component in various chemical processing applications.
• As a lubricity additive in specialty greases and metalworking fluids.

Basic Information

Product Name	Octadecylheptamethyltrisiloxane, 95%
CAS No.	167160-55-6
Molecular Formula	C₂₅H₅₈O₂Si₃
Molecular Weight	483.0 g/mol
Synonyms	Heptamethyloctadecyltrisiloxane; Octadecyl trisiloxane; Silicone surfactant SAG-713; Poly[oxy(methyloctadecylsilylene)]; 1,1,1,3,5,5,5-Heptamethyl-3-octadecyltrisiloxane; Trisiloxane, octadecylheptamethyl-; SAG 713
EINECS	Contact for details

Quality Control

Our Octadecylheptamethyltrisiloxane, 95% is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets the defined specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) documenting these results is available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Density (at 25°C)	0.86 - 0.90 g/mL
Refractive Index (n20/D)	1.440 - 1.445

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