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English name: Diethyltoluenediamine (DETDA)
English alias: Diethyl Methyl Benzene Diamine
CAS NO (material number identification number): 68479-98-1
EINECS NO (Catalogue of commercial chemicals existing in Europe): 270-877-4
UN NO (United Nations number): 3082
European land transport crisis regulations: Class 9
International maritime transportation hazard regulations: 9 categories
International air transport crisis regulations: 9 categories
Category of Dangerous Goods of the People's Republic of China: This product does not fall under the category of the Dangerous Chemicals Catalog (2016 Edition)
Recommended packaging category: III
Similar products from abroad: Albemarle, USA (brand Ethacure 100), Lonza Group, Switzerland (brand DETDA 80), Nitroil, Germany (brand PCAmine ADA 80)
1. Physical and chemical indicators:
light yellow to amber transparent liquid, slightly soluble in water, soluble in polar organic solvents such as alcohols, ethers, and ketones, and has good compatibility with polyethers and polyester polyols.
Item | data |
Molecular formula | C 11 H 18 N 2 |
Structural formula | ![]() |
Molecular weight | 178.28 |
Freezing point °C | -9 |
Boiling point °C | 308(1013 hpa) |
Self-ignition temperature °C | 420(1013 hpa) |
Density g/cm 3 at 25°C | 1.02 |
Flash point °C | 135 |
Steam pressure | 0.000971 pa(25°C) 0.00391 pa(35°C) |
Isocyanate equivalent | 89.5 |
Epoxy resin equivalent | 44.3 |
2. Quality standards:
Item | data |
Viscosity (20°C) | 280 mPa.s |
Viscosity (25°C) | 155 280 mPa.s |
Diethyl methylphenyl diamine (2,4-plus 2,6-) content | ≥98% (Q/370781YXHG001-2015) |
3,5-diethyl methylben-2,4-diamine | 75.0-81.0% |
3,5-DiBiJi-2,6-Diamine | 18.0-20.0% |
Other alkylamines | 0.5-3.0% |
Amine value | 615-635 |
Moisture | ≥0.1% |
Toluenediamine content | ≥0.1% |
3. Product Uses:
DETDA is a very effective polyurethane elastomer chain extender, especially suitable for RIM (reaction injection molding) and SPUA (sprayed polyurea elastomer); it can also be used as an aromatic diamine curing agent for polyurethane elastomers and epoxy resins, used for casting, coatings, RIM and adhesives, and is also a chain extender for polyurethane and polyurea elastomers.
DETDA is a sterically hindered aromatic diamine. The sterically hindered action of ethyl and methyl makes its activity much lower than toluene diamine (TDA). Its reaction rate with polyurethane prepolymers is several times faster than DMTDA and about 30 times faster than MOCA. It is mainly used in RIM polyurethane system and sprayed polyurethane (urea) elastomer coating system. It has the advantages of fast reaction speed, short demolding time, high initial strength, hydrolysis resistance and heat resistance of products. In addition, this product can also be used as an antioxidant for elastomers, lubricants and industrial greases, as well as chemical synthesis intermediates.
4. Packaging, storage and transportation:
The packaging is 1000KG/IBC barrel, 200KG iron barrel or ISOTANK (international standard container). Special packaging can be used according to customer requirements.
5. Storage and transportation:
Do not store outdoors, avoid being stored in high temperature conditions for a long time.