Tween Series

General Information

Product Name: Polysorbates (Tween Series)
Type: Tween 20, Tween 40, Tween 60, Tween 80
Applications: Food, cosmetics, medicine, plastics, pesticides, others

Introduction

Derived from the generic term polysorbates, Tweens are composed of fatty acid esters of polyoxyethylene sorbitan, exhibiting amphipathic properties due to their hydrophilic and lipophilic regions. The numbers following "Tween" indicate the degree of ethoxylation, which is the number of ethylene oxide units added to the sorbitan ester molecule during its synthesis. Characterized by their versatility, Tween surfactants are prized for their emulsifying, solubilizing, stabilizing, and dispersing properties.

Basic Parameters

Items	SUR-NON-011	SUR-NON-012	SUR-NON-013	SUR-NON-014
Type	Tween 20	Tween 40	Tween 60	Tween 80
CAS	9005-64-5	9005-66-7	9005-67-8	9005-65-6
Appearance (25℃)	Yellow to yellow-green viscous liquid	Yellow oily liquid	Pale yellow paste	Amber oily viscose liquid
Hydroxyl Value (mgKOH/g)	90-110	85-100	80-105	65-82
Saponification Value (mgKOH/g)	40-50	40-55	40-55	43-55
Acid value (mgKOH/g)	≤ 2.0	≤ 2.0	≤ 2.0	≤ 2.0
Moisture (%)	≤ 2	≤ 2.5	≤ 3	≤ 2.5
HLB	16.5	15.5	14.5	15

* Typical values (not warranted values)

Characteristics and Applications

Tween 20	Tween-20, comprising polyoxyethylene sorbitan fatty acid ester, stands out for its remarkable solubility in water, methanol, ethanol, and isopropanol. Its non-solubility in animal and mineral oils underscores its utility as an o/w (oil-in-water) emulsifier, facilitating the creation of stable emulsions across various solvents. In the food industry, Tween 20 finds extensive usage in the production of cakes, ice cream, and shortening. Its non-toxic nature and absence of irritants make it a preferred choice for food formulations, ensuring both safety and quality.
Tween 40	Similar to Tween 20, Tween-40 exhibits high solubility in aqueous and alcoholic solvents while remaining insoluble in oils. This characteristic renders it invaluable as an emulsifier, stabilizer, solubilizer, and dispersant. Beyond its application as a food emulsifier, Tween 40 serves diverse roles in industries such as pharmaceuticals, cosmetics, and paints. Its ability to stabilize emulsions and enhance dispersion makes it a versatile ingredient in various formulations.
Tween 60	Tween-60, with its superior emulsifying properties, is prized for its ability to facilitate the formation of stable emulsions. Additionally, its wetting and foaming capabilities broaden its utility across different sectors. In the textile industry, Tween 60 serves as a softener and antistatic agent, imparting desirable properties to fibers while enhancing dyeing processes. Its role in post-treatment applications contributes to the overall quality and functionality of textile products.
Tween 80	Tween-80, distinguished by its solubility in water and alcohols, offers a wide range of applications across industries. As an emulsifier, dispersant, wetting agent, and stabilizer, Tween 80 plays a crucial role in formulations Tweenning pharmaceuticals, cosmetics, and food products. In addition, the utility of Tween 80 extends beyond conventional applications, finding usage in polyurethane foam production, synthetic fiber manufacturing, and photographic material production. Its multifaceted properties contribute to the efficiency and efficacy of various industrial processes.

Packaging and Storage

Packaging Options: Typically packaged in 200 kg iron drums or 50 kg plastic drums.
Storage Conditions: Stored in a cool, dry place, away from direct sunlight and moisture.
Shelf Life: 2 years

Tweens represent a cornerstone of modern industrial processes, offering unparalleled versatility and efficacy across a myriad of applications. Contact Alfa Chemistry today to learn more about our products and how they can benefit your applications.

OUR VALUES AND BELIEFS SHAPE WHO WE ARE.

Excellent efficiency and productivity

High quality and cost-effective products

Sufficient stock

Excellent after-sales services