Toluene diisocyanate
Toluene diisocyanate (abbreviated as TDI) is an important organic chemical raw material, mainly used for the production of polyurethane (PU) soft foam plastics, coatings, adhesives, and elastomers, etc. This substance has a strong irritant and toxic nature, and strict safety precautions must be taken during operation.
Product Description
1. Appearance: Colorless transparent or pale yellow flammable liquid with a strong irritating odor.
2. Common isomers: Industrially, it is mainly a mixture of 2,4-TDI and 2,6-TDI (the most common ratio is 80/20, i.e., TDI-80).
3. Chemical formula: CH₃C₆H₃(NCO)₂
Technical parameters
Quality specification | ||
Iterm | Specification | Result |
PURITY(m/m): | 99.5MIN | 99.85PCT |
ISOMERIC RATIO(2.4/2.6): | 80/20±1.0 | 79.4/20.6 |
ACIDITY(on HCL basis)(ppm): | 30MAX | 6 |
COLOR(APHA): | 25MAX | 15 |
HYDROLYZABLE CHLORINE (PPM) : | 80MAX | 68 |
Conclusion | Qualified | |
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Product Name: Toluene diisocyanate
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