Dimethylthiotoluenediamine (DMTDA)

Product Name: Dimethylthiotoluenediamine (DMTDA)
Physical and Chemical Properties:
Equivalent: 107
Appearance (at room temperature): Pale yellow liquid
Odor: Slight ammonia smell
Boiling point, °F (°C): 667 (353) (decomposition)
Density (g/cm³) at 68°F (20°C): 1.21
140°F (60°C): 1.18
212°F (100°C): 1.15
Viscosity, Cps at 68°F (20°C): 690
140°F (60°C): 22
212°F (100°C): 5
Vapor pressure, mmHg at 65°F (20°C): 0.6
Amine value, mg KOH/g: 536
TDA content (%): ≤ 1.0%
Moisture: ≤ 0.1%

Operation:
Dimethylthiotoluenediamine has significant advantages for handling because it is liquid at room temperature, such as easy transfer and elimination of processes like melting MOCA solids. Similarly, the possibility of solidification does not occur in the mixing container or mixing machine. In addition, it is in a liquid state, allowing operation at lower temperatures than MOCA.
The equivalent of dimethylthiotoluenediamine is 107 compared to 133.5 for MOCA, which means that the weight usage can be reduced by 20% for the same given ideal ratio of prepolymers.

For example:
Prepolymer (NCO 4.1): 100 units    100 units
MOCA (95% of the theoretical amount): 12.4 units
Dimethylthiotoluenediamine (95% of the theoretical amount): 9.9 units
Total: 112.4 units 109.9 units
Packaging Specifications：
1. 25kg/iron drum
2. 200kg/iron drum