Tolylene-2,4-diisocyanate CAS#584-84-9

High Chemical Reactivity: Toluene Diisocyanate (TDI) contains highly reactive isocyanate groups, enabling efficient reactions with various compounds and making it an important raw material in chemical synthesis.
Excellent Industrial Versatility: TDI is widely used as a key intermediate in the production of polyurethane materials, offering broad application potential in coatings, foams, elastomers, and other industrial fields.
Stable Physical Properties: TDI is a water-white to pale-yellow liquid with consistent physical characteristics, including a specific gravity of 1.22, ensuring reliable performance in industrial processes.
Strong Functional Performance: Due to its unique chemical structure and reactivity, TDI provides excellent material-forming capabilities and contributes to the development of high-performance polyurethane products.

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Product Details

Products Description of Tolylene-2,4-diisocyanate CAS#584-84-9

Toluene Diisocyanate (TDI), with the chemical formula (OCN)₂C₆H₃CH₃, is a water-clear to light yellow liquid characterized by a strong, pungent odor. It reacts with water to release carbon dioxide. TDI has a specific gravity of 1.22, making it denser than water.

TDI is a toxic chemical that may pose hazards through inhalation or ingestion. It has strong irritating effects on the skin, eyes, and other tissues. The threshold limit value (TLV) for TDI in air is 0.005 ppm, while the immediately dangerous to life or health (IDLH) concentration is 10 ppm.

Tolylene-2,4-diisocyanate CAS#584-84-9

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	0.095
Water Solubility	reacts
Sensitive	Moisture Sensitive
Merck	149530
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)
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	46316
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

Tolylene-2,4-diisocyanate CAS#584-84-9

Product Application of Tolylene-2,4-diisocyanate CAS#584-84-9

Toluene-2,4-diisocyanate (TDI) is one of the most widely used isocyanate compounds. It is primarily applied in the production of rigid and flexible polyurethane foams, elastomers, and coatings. In addition to being available as a pure compound, TDI is also commercially supplied as mixtures of the 2,4- and 2,6-isomers, commonly in ratios such as 80:20% and 65:35%, respectively.

Occupational allergies are one of the major causes of work-related respiratory diseases worldwide. Toluene-2,4-diisocyanate (TDI) is recognized as one of the most common respiratory sensitizers and can contribute to occupational asthma.

Tolylene-2,4-diisocyanate CAS#584-84-9