Dimethyl phthalate
Synonyms
1,2-Benzenedicarboxylic acid, 1,2-dimethyl ester;
1,2-Benzenedicarboxylic acid, dimethyl ester;
Phthalic acid, dimethyl ester;
Category
Non-ionic surfactant
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Chemical Numbering System
CAS: 131-11-3
EINECS: 205-011-6
Molecular Formula & Molecular Weight
Molecular Formula: C10H10O4
Molecular Weight: 194.18
Structure
Properties
Appearance (1), liquid.
Solubility soluble in water. Soluble in ethanol, ethyl ether.
Physical - chemical properties
|
Water solubility, g/L |
4 (25 °C)[1] |
Stability stable. Under strong acid or strong alkali condition, easily hydrolyzed.
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
|
cat inhalation LCLo |
9300mg/m3/6.5[2] |
|
chicken oral LD50 |
8.5mL/kg[2] |
|
dog oral LD |
> 1400mg/kg[2] |
|
guinea pig oral LD50 |
2.4mL/kg[2] |
|
guinea pig skin LD50 |
> 10mL/kg[2] |
|
mouse intraperitoneal LD50 |
1380mg/kg[2] |
|
mouse oral LD50 |
6800mg/kg[2] |
|
mouse subcutaneous LDLo |
6500mg/kg[2] |
|
rabbit oral LD50 |
4.4mL/kg[2] |
|
rabbit skin LD50 |
> 20mL/kg[2] |
|
rat intraperitoneal LD50 |
3.375mL/kg[2] |
|
rat oral LD50 |
6800mg/kg[2] |
|
rat skin LD50 |
> 4800mg/kg[2] |
Reproductive effect[2].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, dispersing, emulsifying, solubilizing 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 plasticizer.
Use as solvent. For example, used in paints, resins.
Use as dispersing agent, emulsion stabilizer.
Use as insect attractant.
2, Personal care products
Film-forming agent, plasticizer, masking agent, solvent in personal care products.
3, Industrial cleaning
Cleansing agent, paint remover in industrial cleaning.
Manufacturers
References
[1]: HSDB. 131-11-3, Dimethyl phthalate
[2]: ChemIDplus. 131-11-3, Dimethyl phthalate
Update: 20141031(1); 20200614(2);