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

CAS Number: 584-84-9
Chemical Formula: C9H6N2O2
Synonyms:

1,3-Diisocyanato-4-Methylbenzene
2,4-Toluylene Diisocyana
Tolylene 2,4-Diisocyanate(monomer)

Appearance: Colorless Liquid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

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

Toluene diisocyanate (TDI), (OCN)2C6H3CH3, is a water-white to pale-yellow liquid with a sharp, pungent odor. It reacts with water to release carbon dioxide. The specific gravity is 1.22, which is heavier than water. TDI is toxic by inhalation and ingestion, and is a strong irritant to skin and other tissue, particularly the eyes. The TLV is 0.005 ppm in air, and the IDLH is 10 ppm. The target organs are the respiratory system and the skin. The four-digit UN identification number is 2078. The NFPA 704 designation is health 3, flammability 1, and reactivity 3. The white section at the bottom of the diamond has a W with a slash through it, indicating water reactivity. The primary uses of TDI are in the manufacture of polyurethane foams, elastomers, and coatings.

Tolylene-2,4-diisocyanate Chemical Properties

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
color	Colorless
Specific Gravity	1.225
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.
Major Application	cleaning products cosmetics environmental food and beverages personal care
InChI	1S/C9H6N2O2/c1-7-2-3-8(10-5-12)4-9(7)11-6-13/h2-4H,1H3
InChIKey	DVKJHBMWWAPEIU-UHFFFAOYSA-N
SMILES	Cc1ccc(cc1N=C=O)N=C=O
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	TSCA listed
HazardClass	6.1
PackingGroup	II
HS Code	29291010
Storage Class	6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
Hazard Classifications	Acute Tox. 1 Inhalation Aquatic Chronic 3 Carc. 2 Eye Irrit. 2 Resp. Sens. 1 Skin Irrit. 2 Skin Sens. 1 STOT SE 3
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

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

TDI (toluene diisocyanate) is an important basic raw materials of polyurethane. TDI is a mixture of 2,4-TDI and 2,6-TDI two kinds of isomers, including 3 kinds of commonly used grades: TDI-80/20, TDI-100 and TDI-65/35. Mainly used in the production of flexible polyurethane foam and polyurethane elastomer coatings, adhesives, etc..

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