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8.08264

Toluylene diisocyanate

(mixture of isomeres) for synthesis

Synonym(s):

Toluylene diisocyanate, 4-Methyl-m-phenylene diisocyanate, TDI

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About This Item

Linear Formula:
(NCO)2C6H3CH3
CAS Number:
26471-62-5
Molecular Weight:
174.16
MDL number:
MFCD00002011
UNSPSC Code:
12352118
EC Index Number:
247-722-4
NACRES:
NA.22
Form:
liquid
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vapor pressure

0.03 hPa ( 20 °C)

Quality Level

200

form

liquid

autoignition temp.

620 °C

potency

4130 mg/kg LD50, oral (Rat), >12200 mg/kg LD50, skin (Rabbit)

expl. lim.

0.9-9.5 % (v/v)

bp

247 °C/1013 hPa

mp

12-14 °C

transition temp

flash point 132 °C

density

1.22 g/cm3 at 20 °C

storage temp.

2-30°C

SMILES string

N(=C=O)c1c(ccc(c1)N=C=O)C

InChI

1S/C9H6N2O2/c1-7-2-3-8(10-5-12)4-9(7)11-6-13/h2-4H,1H3

InChI key

DVKJHBMWWAPEIU-UHFFFAOYSA-N

Application


  • Preparation and properties of toluene-diisocyanate-trimer-modified epoxy resin: Discusses the enhancement of epoxy resin properties through the self-polymerization of TDI, aiming to improve performance in industrial applications (X Zhang, L Qiao, X Lu, L Jiang, T Cao, 2019).

  • A simple method for the quantification of free isocyanates on the surface of cellulose nanocrystals: This research focuses on the carbamation of cellulose using TDI, which is critical for the modification and enhancement of nanocellulose surfaces for various applications (H Abushammala, 2019).

  • Fluorescent linear polyurea based on toluene diisocyanate: Reports the preparation of a TDI-based polyurea that exhibits broad emission spectra, suggesting potential uses in sensor applications and material science (H Cao, B Li, X Jiang, X Zhu, XZ Kong, 2020).

Analysis Note

Assay isomers (GC, area%): ≥ 98.0 % (a/a)
Assay Toluylene-2,6-diisocyanate (NMR): 10.0 - 30.0 % (a/a)
Assay Toluylene-2,4-diisocyanate (NMR): 70.0 - 90.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.218 - 1.222
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

signalword

Danger

target_organs

Respiratory system

wgk

WGK 2

flash_point_f

269.6 °F - closed cup

flash_point_c

132 °C - closed cup

Hazard Classifications

Acute Tox. 1 Inhalation - Aquatic Chronic 3 - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Certificates of Analysis (COA)

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