Products Description of Dimethyl thio-toluene diamine CAS#106264-79-3
Dimethyl thio-toluene diamine, known as DMTDA or Ethacure 300, CAS#106264-79-3, has molecular formula C₉H₁₂N₂S₂ and molecular weight of 214.36. It is a pale yellow transparent viscous liquid, a mixture of 2,4- and 2,6-isomers. Its density is 1.206 g/cm³ at 20°C, with viscosity of 600–900 mPa·s.
This aromatic diamine features moderate reactivity, low toxicity and good thermal stability. It has limited solubility in water and is compatible with most polyurethane prepolymers. It acts as premium chain extender for cast polyurethane and spray polyurea systems.
Dimethyl thio-toluene diamine Chemical Properties
| Boiling point | 200°C (1.68 mmHg) |
| density | 1.206 |
| vapor pressure | 10Pa at 25℃ |
| Water Solubility | 162mg/L at 20℃ |
| Form | Viscous liquid |
| Color | Yellow |
| InChI | InChI=1S/C9H14N2S2/c1-5-4-6(12-2)8(11)9(13-3)7(5)10/h4H,10-11H2,1-3H3 |
| InChIKey | AOFIWCXMXPVSAZ-UHFFFAOYSA-N |
| SMILES | C1(C=C(C)C(N)=C(SC)C=1N)SC |
| LogP | 2.5 at 20℃ |
| CAS DataBase Reference | 106264-79-3(CAS DataBase Reference) |
| EPA Substance Registry System | 1,3-Benzenediamine, 2(or 4)-methyl-4,6(or 2,6)-bis(methylthio)-(106264-79-3) |
| Hazard Codes | Xn;N,N,Xn |
| Risk Statements | 43-50/53-22 |
| Safety Statements | 2-24-37-60-61 |
| RIDADR | 2810 |
| HazardClass | 6.1 |
| PackingGroup | III |
Product Application of Dimethyl thio-toluene diamine CAS#106264-79-3
Dimethyl thio-toluene diamine (DMTDA) is a high-performance liquid chain extender and curing agent for polyurethane and polyurea systems, serving as an excellent substitute for MOCA. It is widely adopted for cast PU elastomers, spray polyurea coatings and RIM reaction injection molding. It produces elastomers with high tear strength, outstanding abrasion resistance and oil resistance, used for industrial rollers, casters, solid tires and wear-resistant spare parts.
It also works in heavy-duty anti-corrosion coatings, waterproof linings, adhesives and epoxy curing formulations for construction, mining and automotive industries.
