80/20 Toluenes Diisocyanate Tdi
Product:Toluene Diisocyanate 80/20 or TDI 80/20
CAS number: 584-84-9
Molecular formula: C9H6N2O2
Molecular weight: 174.15
Synonym:2,4-Diisocyanatotoluene; Benzene, 1,3-diisocyanatomethyl-;
TDI, Diisocyanatoluene
Quality Standard:Q/DHJ.02.02-1999
Appearance: water-with to pale yellow clear liquid with irritating
odour.
Description: TDI is colorless and transparent to primrose yellow
liquid, with pungent smell, insoluble in
water, soluble in Aceton, ethyl acetate and toluene.
Introduction
Toluene diisocyanate (TDI) is an aromatic diisocyanate that is a
clear, pale yellow liquid
with a sharp, pungent odor, which is insoluble in water and miscible
with most common
organic solvents. TDI (CAS No. 26471-62-5) consists of two isomers:
toluene-2,4-diisocyanate (2,4-TDI) (CAS No. 584- 84-9) and
toluene-2,6-diisocyanate (2,6-TDI) (CAS No. 91- 08-7), which is commercially produced
in different ratios. The most common ratio is 80% 2,4-TDI/20% 2,6 TDI. TDI is widely used
and accounted for 34% of the global isocyanate market
Specifictaion
| Test Item | Index | Test Result |
| Purity(WT)% | 99.7min | 99.8 |
| 2,4-Isomer% | 80+/-1 | 79.6 |
| 2,6-Isomer% | 20+/-1 | 19.6 |
| Acidity%(HCL) | 0.0015MAX | 0.0004 |
| Hydrolyzable Chloride(WT)% | 0.004MAX | 0.0033 |
| Color (APHA) | 15 MAX | 5 |
| Total Chloride(WT)% | 0.018 MAX | 0.005 |
| Appearance | In compliance with the above specification. |
Application
TDI (toluene diisocyanate) is a kind of commonly used
polyisocyanate, which is
polyurethane (PU) material and important basic raw material. It is mainly used
for producing
flexible polyurethane foam and polyurethane elastomers, coatings, adhesives
and so on.
Storage: sealed with argon or nitrogen, cool, dry and protected from light. 
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