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Free lookupCAS 584-84-9

Toluene 2,4-Diisocyanate

CAS 584-84-9 · PubChem CID 11443 · C9H6N2O2 · 174.16 g/mol

Also called 2,4-Diisocyanato-1-methylbenzene, 2,4-Toluene diisocyanate, TOLUENE 2,4-DIISOCYANATE, 2,4-Diisocyanatotoluene, Tolylene-2,4-diisocyanate.

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Opens the builder with Toluene 2,4-Diisocyanate loaded
as component 1 at 100%.

01GHS classification
GHS pictogram: Acute Toxic
Acute Toxic
GHS pictogram: Health Hazard
Health Hazard

Precautionary statement codes

P203, P233, P260, P261, P264, P264+P265, P271, P272, P273, P280, P284, P302+P352, P304+P340, P305+P351+P338, P316, P318, P319, P320, P321, P332+P317, P333+P317, P337+P317, P342+P316, P362+P364, P403, P403+P233, P405, and P501

Regulation (EC) No 1272/2008 of the European Parliament and of the Councilfetched 2026-08-28

H317May cause an allergic skin reaction
H319Causes serious eye irritation
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
02Physical and chemical properties
Appearance

Colourless-to-pale yellow liquid or crystals with pungent odour. Turns pale yellow on exposure to air.

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Odour

Sharp, pungent

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

Melting point

22 °C

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Boiling point

no value printed

unsourced — inference candidate

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

no value printed

unsourced — inference candidate

Flammable limits

no value printed

unsourced — inference candidate

Vapour pressure

no value printed

unsourced — inference candidate

Relative density

no value printed

unsourced — inference candidate

Solubility in water

no value printed

unsourced — inference candidate

Partition coefficient, log Kow

no value printed

unsourced — inference candidate

Viscosity

no value printed

unsourced — inference candidate

03Toxicological information
LC50 Rat inhalation 14 ppm/4 hr

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

LC50 Mouse inhalation 10 ppm/4 hr

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

LC50 Guinea pig inhalation 13 ppm/4 hr

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

LD50 Rat oral 5800 mg/kg

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

LC50 Rat inhalation 56.96 mg/cu m/1 hr

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

LC50 Rat inhalation 98.96 + or - 8.6 mg/cu m/4 hr

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

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What we read

Hazardous Substances Data Bank (HSDB), ILO-WHO International Chemical Safety Cards (ICSCs), Regulation (EC) No 1272/2008 of the European Parliament and of the Council.

15 sourced records for this substance are in the ledger. Values dated more than 30 days ago are re-fetched on the next document.