Tolylene-2,4-diisocyanate
Stability and Storage Requirements: This substance maintains general stability under controlled conditions, though it demonstrates sensitivity to moisture, thermal variations, and light exposure, necessitating appropriate storage protocols.
Solubility Profile: The compound exhibits miscibility with multiple organic solvents including diethyl ether, acetone, and benzene, supporting its application in diverse formulation systems.
Reactive Characteristics: It demonstrates reactivity toward compounds containing active hydrogen atoms, enabling participation in polymerization reactions and other synthetic processes.
Toxicity and Handling: The material requires careful handling procedures due to potential toxic effects at elevated exposure levels, with implementation of exposure control measures recommended for safe utilization.
Toluene-2,4-diisocyanate typically presents as a transparent, colorless liquid under standard ambient conditions. While demonstrating general chemical stability, the compound exhibits reactivity toward hydrolytic conditions and requires storage in cool, dry environments with adequate ventilation, protected from direct light exposure.
Parameters
Melting point | 20-22 °C(lit.) |
Boiling point | 124-126 °C18 mm Hg(lit.) |
density | 1.225 g/mL at 25 °C |
vapor density | 6 (vs air) |
vapor pressure | 0.03 mm Hg ( 25 °C) |
refractive index | n20/D 1.568(lit.) |
Fp | 250 °F |
storage temp. | 2-8°C |
solubility | Miscible with ether, acetone, benzene, carbontetrachloride and chlorobenzene. |
form | Liquid |
Specific Gravity | 1.225 |
color | Colorless |
Odor | Sharp, pungent odor detectable at 0.02 to 0.4 ppm |
explosive limit | 9.5% |
Water Solubility | reacts |
Sensitive | Moisture Sensitive |
Merck | 14,9530 |
BRN | 744602 |
Exposure limits | TLV-TWA 0.0355 mg/m3 (0.005 ppm) (ACGIH and NIOSH); STEL or ceiling/10 min 0.142 mg/m3 (0.02 ppm) (ACGIH, NIOSH, and OSHA); IDLH 71 mg/m3 (10 ppm) (NIOSH). |
Stability: | Stable, but decomposes in the presence of moisture. Also heat and light sensitive. Readily polymerizes in contact with base. Reacts with compounds containing active hydrogen. Incompatible with strong oxidizing agents. Corrodes some copper and aluminium alloys. |
InChIKey | DVKJHBMWWAPEIU-UHFFFAOYSA-N |
LogP | 3.43 at 22℃ |
CAS DataBase Reference | 584-84-9(CAS DataBase Reference) |
NIST Chemistry Reference | Benzene, 2,4-diisocyanato-1-methyl-(584-84-9) |
EPA Substance Registry System | Toluene-2,4-diisocyanate (584-84-9) |
Safety Information
Hazard Codes | T+ |
Risk Statements | 26-36/37/38-40-42/43-52/53 |
Safety Statements | 23-36/37-45-61 |
RIDADR | UN 2078 6.1/PG 2 |
WGK Germany | 2 |
RTECS | CZ6300000 |
F | 10-21 |
Autoignition Temperature | >619 °C |
TSCA | Yes |
HazardClass | 6.1 |
PackingGroup | II |
HS Code | 29291010 |
Hazardous Substances Data | 584-84-9(Hazardous Substances Data) |
Toxicity | Acute oral LD50 for rats 5,800 mg/kg, wild birds 100 mg/kg (quoted, RTECS, 1985). |
IDLA | 2.5 ppm |
Toluene-2,4-diisocyanate typically presents as a transparent, colorless liquid under standard ambient conditions. While demonstrating general chemical stability, the compound exhibits reactivity toward hydrolytic conditions and requires storage in cool, dry environments with adequate ventilation, protected from direct light exposure.
