Polyoxyethylene sorbitan monostearate
Time: 2019-12-22 22:58:38

Polyoxyethylene sorbitan monostearate

Synonyms

Polyethylene glycol sorbitan monostearate;

PEG sorbitan stearate;

Sorbitan, monooctadecanoate, poly(oxy-1,2-ethanediyl) derivs.;

Sorbitan, monostearate, polyoxyethylene derivs.;

Category

Non-ionic surfactant

> Polyether

>> Ester Polyether

>>> Ester Polyoxyethylene Ether

>>>> Polyoxyethylene Sugar Alcohol and Dehydrated Sugar Alcohol Esters

Chemical Numbering System

CASRN: 9005-67-8

EINECS: 500-020-4

Molecular Formula & Molecular Weight

Molecular Formula: N/A

Molecular Weight: N/A

Structure

Schematic formula:

Properties

Appearance    (1), milky-white to yellow-brown liquid to solid.

Solubility    slightly soluble in water to soluble in water. The solubility increases with the increase of EO number.

Stability    stable. Under strong acid or strong alkali condition, easily hydrolyzed.

Risk    Solid (or liquid) form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.

GHS (Rev.7) label:  

Animal Toxicity

Table 1 Animal toxicity values

mouse intravenous LDLo

1000mg/kg[1]

rat intraperitoneal LDLo

> 4000mg/kg[1]

rat intravenous LD50

1220mg/kg[1]

rat oral LD50

> 60mL/kg[1]

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent emulsifying, dispersing, solubilizing, lubricating abilities. Performance is related to EO number.

Note    (1), The by-product 1,4-dioxane is a possible carcinogen. Generally, can be acceptable when concentration of 1,4-dioxane is less than 30ppm or less.

(2), Be careful with using in children's products.

Synthesis

 

Quality Standards & Test Methods

1, Physical and chemical indexes

Item

Physical and chemical indexes

Liquid/paste/solid

Actives, %, ≥

95.0

Test Methods

(1), Actives

GB/T 13173 Surface active agents -- Detergents -- Testing methods

2, Hazardous substances indexes

Item

Hazardous substances indexes

Liquid/paste/solid

Heavy metals (as Pb), mg/Kg, ≤

20

As, mg/Kg, ≤

3

Test Methods

(1), Heavy metals (as Pb)

Safety and Technical Standards for Cosmetics (2015 Edition)

GB/T 30799 The test method of food detergents -- Determination of heavy metals

(2), As

Safety and Technical Standards for Cosmetics (2015 Edition)

GB/T 30797 The test method of food detergents -- Determination of total arsenic

3, Product standards

(1), Chinese standards

(1a), GB 25553 Food safety national standard -- Food additive -- Polyoxyethylene (20) sorbitan monostearate

(1b), Chinese Pharmacopoeia (2015 Edition) Polysorbate 60

4, Further explanation

(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.

(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.

Major Uses

1, Typical applications

Use as emulsifying agent, dispersing agent.

Use as solubilizing agent.

Use as lubricant.

Use as plasticizer.

2, Personal care products

Emulsifying agent in personal care products.

3, Textile

Antistatic agent, emulsifying agent in fiber, textile, leather.

4, Polymer

Lubricant in plastics.

5, Machinery

Lubricant in metal processing.

6, Food

Use as food additive (emulsifying agent, defoaming agent, stabilizing agent).

Use as food processing aid (dispersing agent, extraction solvent, defoaming agent).

7, Medicine

Pharmaceutical excipient, use as emulsifying agent, solubilizing agent. (This section is for reference only, should be implemented according to local Pharmacopoeia.)

Product members

PEG-3 Sorbitan stearate;

PEG-4 Sorbitan stearate;

PEG-6 Sorbitan stearate;

PEG-40 Sorbitan stearate;

PEG-60 Sorbitan stearate;

Manufacturers

 

References

[1]: ChemIDplus. 9005-67-8, Polyoxyethylene sorbitan monostearate