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LC5545 Toluylene diisocyanate
(mixture of isomeres) for synthesis


Order number Packaging Quantity Price €
AC32545 Glass bottle 100 ml 11.25
AC32545 Glass bottle 500 ml 34.2


Product information
Synonyms 4-Methyl-m-phenylene diisocyanate, TDI
Hill Formula C9H6N2O2
Chemical formula (NCO)2C6H3CH3
HS Code 2929 10 00
EC number 247-722-4
Molar mass 174.16 g/mol
EC index number 615-006-00-4
CAS number 26471-62-5


Chemical and physical data
Ignition temperature 620 °C DIN 51794
Solubility (20 °C) insoluble,(decomposition)
Melting point 12 – 14 °C
Molar mass 174.16 g/mol
Density 1.22 g/cm3 (20 °C)
pH value (H2O) not applicable
Boiling point 247 °C (1013 hPa)
Vapor pressure 0.03 hPa (20 °C)
Explosion limit 0.9 – 9.5 %(V)
Flash point 132 °C
Refractive index 1.5689 (20 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H319: Causes serious eye irritation.
H330: Fatal if inhaled.
H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335: May cause respiratory irritation.
H351: Suspected of causing cancer.
H412: Harmful to aquatic life with long lasting effects.
Precautionary Statement(s) P260: Do not breathe vapour.
P262: Do not get in eyes, on skin, or on clothing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
RTECS NQ9490000
Storage class 6.1A Combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 11
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.


Safety information
R Phrase R 26-36/37/38-40-42/43-52/53
Very toxic by inhalation.Irritating to eyes, respiratory system and skin.Limited evidence of a carcinogenic effect.May cause sensitization by inhalation and skin contact.Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 23-36/37-45-61
Do not breathe vapour.Wear suitable protective clothing and gloves.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger very toxic, irritant, carcinogenic, sensitizing, dangerous for the environment
Hazard Symbol Very toxic


Transport information
Declaration (transport by sea) IMDG-Code UN 2078 TOLUENE DIISOCYANATE, 6.1, II
Declaration (transport by air) IATA-DGR UN 2078 TOLUENE DIISOCYANATE, 6.1, II


Toxicological data
LD 50 oral LD50 rat 4130 mg/kg
LD 50 dermal LD50 rabbit > 12200 mg/kg


Assay (GC, area%) ∼80%
Density (d 20 °C/ 4 °C) 1.218 – 1.220
Toluylene-2,6-diisocyanate (GC, area%) ∼20%
Identity (IR) passes test