Sorbitan Tri Stearate (STS)

Overview

Sorbitan Tri Stearate (STS), also known by its INCI name Sorbitan Tristearate and CAS No. 26266-58-0, is a highly effective non-ionic surfactant and emulsifier derived from natural sources. It is the triester of sorbitan and stearic acid, known for its strong lipophilic (oil-loving) properties, which gives it a remarkably low Hydrophilic-Lipophilic Balance (HLB) value of approximately 2.1.

As a member of the sorbitan ester family, STS plays a critical role across various industries, particularly where the stabilization of water-in-oil emulsions, modification of fat crystallization, or prevention of polymorphism in lipids is required. Its unique molecular structure allows it to effectively reduce interfacial tension between immiscible phases, making it an indispensable component in formulating stable and high-performance products. CanCastor leverages its deep expertise in specialty chemical manufacturing to deliver a premium grade Sorbitan Tri Stearate, meticulously produced to meet stringent international quality benchmarks such as USP, BP, and FCC, ensuring suitability for even the most demanding applications.

Our STS is derived from sustainably sourced stearic acid, often from vegetable origins, aligning with global demands for more environmentally conscious raw materials. This commitment to quality and responsible sourcing underpins its trusted status as a versatile additive in regulated sectors like food, pharmaceuticals, and cosmetics, where consistent performance and purity are paramount. Explore our full range of specialty chemicals in our full catalog.

Key Physical & Chemical Properties

• INCI Name: Sorbitan Tristearate
• CAS Number: 26266-58-0
• Appearance: White to light yellow, waxy flakes or powder
• Hydrophilic-Lipophilic Balance (HLB) Value: Approximately 2.1
• Melting Point: 50 - 57 °C
• Acid Value: Max 15 mg KOH/g
• Saponification Value: 176 - 190 mg KOH/g
• Hydroxyl Value: 65 - 80 mg KOH/g
• Iodine Value: Max 1.0 g I2/100g
• Moisture Content: Max 1.5 %