Diethanolamine
Synonyms
N,N-Diethanolamine;
2,2'-Iminodiethanol;
DEA;
Category
Non-ionic surfactant
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Chemical Numbering System
CAS: 111-42-2
EINECS: 203-868-0
Molecular Formula & Molecular Weight
Molecular Formula: C4H11NO2; C4H11N1O2
Molecular Weight: 105.14
Structure
Properties
Appearance (1), solid; (2), liquid.
Solubility soluble in water.
Physical - chemical properties
|
Melting point, °C |
27.9[1] |
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2, nitrogen oxides and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
guinea pig oral LD50 |
2000mg/kg[2] |
|
guinea pig skin LD50 |
11.9mL/kg[2] |
|
mouse intraperitoneal LD50 |
210mg/kg[2] |
|
mouse oral LD50 |
3300mg/kg[2] |
|
rabbit oral LD50 |
2200mg/kg[2] |
|
rabbit skin LD50 |
7.64mL/kg[2] |
|
rat intramuscular LD50 |
1500mg/kg[2] |
|
rat intraperitoneal LD50 |
120mg/kg[2] |
|
rat intravenous LD50 |
778mg/kg[2] |
|
rat oral LD50 |
0.62mL/kg[2] |
|
rat subcutaneous LD50 |
2200mg/kg[2] |
Reproductive effect[1,2].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, solubilizing, dispersing, emulsifying, anticorrosive, lubricating abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
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 |
|
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), HG/T 2916 Diethanolamine for industrial use
4, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
Major Uses
1, Typical applications
Use as solvent.
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as corrosion Inhibitor, lubricant.
Use as intermediate in organic synthesis.
Manufacturers
References
[1]: HSDB. 111-42-2, Diethanolamine
[2]: ChemIDplus. 111-42-2, Diethanolamine
Update: 20130924(1); 20200725(2);