Qingdao Exceed Fine Chemicals Co.,Ltd
The most professional solution provider of polyurethane and rubber chemicals!
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Description
3,3'-dimethylbiphenyl-4,4'-diyl diisocyanate (TODI) is an aromatic diisocyanate used to enhance the mechanical and chemical properties of polyurethane elastomers. Due to steric hindrance, the reactivity of HARTDUR 118 is lower than that of TDI and MDI. TODI-based elastomers can improve various physical properties, such as heat resistance and hydrolysis resistance, and also offer superior mechanical properties for applications under harsh conditions and environments.
Molecular formula: C16H12N2O2
Structural formula: 
Physical Properties
| Test Item(s) | Specification(s) |
| Appearance | White slice crystal |
| CAS No. | 91-97-4 |
| Molecular Weight (g/mol) | 264.27 |
| NCO Content (%) | 31.8 |
| Melting Point (°C) | 69 ~ 71 |
| Density (g/cm3, @20°C) | 1.12 |
| Total Chlorine Content (%) | 0.1 max. |
| Hydrolysable Chlorine Content (%) | 0.01 max. |
| Purity (%) | 99 min. |
Package
50 kgs/metal drum
Storage
Keep dry and store at 5 ~ 32°C.
Shelf Life
6 months since production date.