Polytetramethylene glycol
Synonyms
Poly(oxy-1,4-butanediyl), alpha-hydro-omega-hydroxy-;
PTMG;
PTMEG;
Polybutylene glycol;
Poly(oxy-1,4-butylene) glycol;
Poly(tetramethylene ether)diol;
Category
Non-ionic surfactant
> Polyether
>> Polyoxybutylene Polymers
Chemical Numbering System
CAS: 25190-06-1
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: (C4H8O).H2O
Molecular Weight: N/A
Structure
Properties
Appearance (1), colorless liquid to white solid.
Solubility insoluble to soluble in water.
Stability stable.
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 label: 
Animal Toxicity
Table 1 Animal toxicity values
|
mouse oral LD |
> 10000mg/kg[1] |
|
rat oral LDLo |
5000mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent emulsifying, dispersing, solubilizing, lubricating abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid/liquid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid/liquid |
|
|
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/T 25254 Poly-(tetra methylene ether glycol) (PTMEG) for industrial
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.
2, Personal care products
Conditioning agent in personal care products.
3, Organic synthesis
Use as intermediate in organic synthesis. For example, used in synthesis of polyesters, polyurethanes.
Product members
Polybutylene glycol-10;
Manufacturers
References
[1]: ChemIDplus. 25190-06-1, Polytetramethylene glycol
Update: 20130928(1); 20200301(2);