Qingdao Exceed Fine Chemicals Co.,Ltd
The most professional solution provider of polyurethane and rubber chemicals!
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Description
P-Toluenesulfonyl Isocyanate PTSI is a mono-isocyanate with high reactivity, widely employed as a dehydrating agent in chemical products, including solvents, fillers, pigments, and pitch tar applications. It also functions as a moisture scavenger for solvent-based PU coatings, sealants, adhesives, and serves as a chemical intermediate. In PU coating/paint applications, HARTTIVE MSI can prevent undesirable premature reactions and act as a stabilizer for moisture-curing materials, preventing deterioration or discoloration during storage.
Molecular formula: C8H7NO3S
Structural formula: 
Physical Properties
| Test Item(s) | Specification(s) |
| Appearance | Almost colorless liquid |
| CAS No. | 4083-64-1 |
| Molecular Weight (g/mol) | 197.21 |
| NCO Content (%) | 20.0 ± 1 |
| Melting Point (°C) | -2 |
| Density (g/cm3, @20°C) | 1.29 |
| Purity (%) | 96 min. |
Package
20 KGS/iron drum
Storage
Keep dry and store at 5 ~ 32°C.
Shelf Life
6 months since production date.