Methylal
Synonyms
Dimethoxymethane;
Methane, dimethoxy-;
Category
Non-ionic surfactant
> Ether
Chemical Numbering System
CAS: 109-87-5
EINECS: 203-714-2
Molecular Formula & Molecular Weight
Molecular Formula: C3H8O2
Molecular Weight: 76.09
Structure
Properties
Appearance (1), liquid.
Odor chloroform-like odor.
Solubility soluble in water.
Stability stable.
Risk 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 inhalation LC50 |
57000mg/m3/7H[1] |
|
rabbit skin LD |
> 16mL/kg[1] |
|
rabbit oral LD50 |
5708mg/kg[1] |
|
rat inhalation LC50 |
15000ppm[1] |
|
rat intraperitoneal LDLo |
5000mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, dispersing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
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 |
|
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, 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 solvent.
Use as cleansing agent.
2, Personal care products
Solvent in personal care products.
Manufacturers
References
[1]: ChemIDplus. 109-87-5, Methylal
Update: 20190818(1)