C9H6N2O2
174.16 g/mol
Industrial ChemicalDanger
2,4-Diisocyanato-1-methylbenzene
CAS584-84-9EC209-544-5
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
polyurethane foam and elastomer production
Toluene diisocyanate (2,4-diisocyanato-1-methylbenzene) is an industrial chemical used in the production of polyurethane products. At room temperature it is a clear, pale yellow liquid with a sharp, pungent odor, insoluble in water but miscible with common organic solvents.
polyurethane foam manufacturingpolyurethane elastomer productioncoating and adhesive formulations
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:EU REACH Restriction List
CAS 584-84-9
Related Compounds
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Heat stabilizer
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monomer for methacrylate polymer production
ReferenceSame Category
3-(1,1-dimethylethyl)-phenol
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UV stabilizer and antioxidant precursor
ReferenceSame Category
2,4-Dibromopyridine
CAS58530-53-3
Chemical intermediate for synthesis
Safety Reference
Danger
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H351Suspected of causing cancer
H412Harmful to aquatic life with long lasting effects
H318Causes serious eye damage
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H332Harmful if inhaled
H371May cause damage to organs
Customs Tariff Classification
The international HS code for 2,4-Diisocyanato-1-methylbenzene (CAS 584-84-9) is 2929.10.
HS code (international, 6-digit)
2929.10
EU CN code (8-digit)
2929 10 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2,4-diisocyanato-1-methylbenzene
InChIKey
DVKJHBMWWAPEIU-UHFFFAOYSA-N
SMILES
CC1=C(C=C(C=C1)N=C=O)N=C=O
Synonyms (66)
- TDI
- 2,4-DIISOCYANATE
- 2,4-Diisocyanate, Toluene
- 2,4-Diisocyanatotoluene
- 2,4-TDI
- 2,4-Toluene diisocyanate
- 2,4-Toluylene Diisocyanate
- 2,4-Tolylene diisocyanate
- 4-Methyl-phenylene isocyanate
- Benzene, diisocyanatomethyl-
- Cresorcinol diisocyanate
- Desmodur T80
- Di-iso-cyanatoluene
- Di-isocyanate de toluylene
- Diisocyanat-toluol
- Diisocyanat-toluol [German]
- Hylene T
- Hylene tcpa
- Hylene tlc
- Hylene tm
- Hylene tm-65
- Hylene trf
- Mondur TD
- Mondur TD-80
- Mondur TDS
- Nacconate 100
- Nacconate IOO
- Niax tdi
- Niax tdi-P
- Rubinate TDI 80/20
- TOLUENE 2,4-DIISOCYANATE
- TOLUENE DIISOCYANATE, 2,4-
- Tolueen-diisocyanaat
- Tolueen-diisocyanaat [Dutch]
- Toluen-disocianato
- Toluen-disocianato [Italian]
- Toluene, 2,4-diisocyanato-
- Toluilenodwuizocyjanian
- Toluylene-2,4-diisocyanate
- Tolyene 2,4-diisocyanate
- Tolylene diisocyanate
- Tolylene-2,4-diisocyanate
- Tuluylendiisocyanat
- Tuluylendiisocyanat [German]
- meta-toluene diisocyanate
- toluene-2,4-diyl diisocyanate