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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 Segment

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

Class I Designated Chemical Substances

prtr

Group 4: Flammable liquids + Type 3 petroleums + Hazardous rank III + Water insoluble liquid

fsl

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