Toluene 2,4-diisocyanate

CAS 584-84-9C9H6N2O2Chemical Synthesis

Toluene 2,4-diisocyanate (CAS: 584-84-9; C9H6N2O2) is a versatile aromatic diisocyanate with a molecular weight of 174.16 g/mol. It is a key intermediate primarily used in the synthesis of polyurethanes, known for their excellent thermal and mechanical properties. This compound is also employed in the production of coatings, adhesives, and elastomers, serving as a fundamental building block in various chemical synthesis pathways.

IUPAC: 2,4-Diisocyanatotoluene,4-Methyl-1,3-phenylene diisocyanate,4-Methyl-m-phenylene diisocyanate,TDI
Synonyms: 2,4-DiisocyanatotolueneTDI4-Methyl-1,3-phenylene diisocyanate4-Methyl-m-phenylene diisocyanate

Email us

Toluene 2,4-diisocyanate (C9H6N2O2) — chemical structure, CAS 584-84-9; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksChemical SynthesisIsocyanatesNitrogen CompoundsOrganic Building Blocks

01 /Applications

Polyurethane Synthesis

Toluene 2,4-diisocyanate is a primary reactant in the production of polyurethane foams, elastomers, and coatings. It reacts with polyols to form polymer chains, yielding materials with diverse applications in insulation, automotive parts, and protective finishes.

Adhesives and Sealants

This diisocyanate is used in the formulation of high-performance adhesives and sealants. The resulting polyurethane-based products offer strong bonding capabilities and durability across various substrates.

Coatings and Varnishes

It serves as a crucial component in the manufacture of durable polyurethane coatings. These coatings provide excellent resistance to abrasion, chemicals, and weathering, finding use in industrial and architectural applications.

Elastomer Production

Toluene 2,4-diisocyanate is employed in creating polyurethane elastomers, which exhibit rubber-like properties. These materials are utilized in applications requiring flexibility, resilience, and wear resistance.

02 /Properties

Molecular weight	174.16
Empirical formula	C9H6N2O2
Assay	95%
Boiling point	115-120 °C/10 mmHg(lit.)
Density	1.214 g/mL at 25 °C
Refractive index	n20/D 1.568(lit.)
Solubility	acetone and ethanol: soluble(lit.)alcohol: miscible(lit.)benzene: soluble(lit.)carbon tetrachloride: miscible(lit.)chlorobenzene: miscible(lit.)diethyl ether: miscible(lit.)kerosene: miscible(lit.)olive oil: miscible(lit.)
Melting point	20-22 °C(lit.)
Vapour pressure	0.03 mmHg (25 °C)
Vapour density	6 (vs air)
Autoignition temp	>1148 °F
Storage temperature	2-8°C
Impurities tested	4% 2,6-isomer

03 /Safety & handling

GHS hazard pictogram: Toxic (GHS06) — Toxic

GHS hazard pictogram: Health hazard (GHS08) — Health hazard

Danger

Hazard statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H330Fatal if inhaled
H334May cause allergy or asthma symptoms if inhaled
H335May cause respiratory irritation
H351Suspected of causing cancer
H412Harmful to aquatic life with long-lasting effects

Precautionary statements

P260Do not breathe dust, fume, gas, mist, vapours or spray
P273Avoid release to the environment
P280Wear protective gloves, clothing and eye/face protection
P284Wear respiratory protection
P305IF IN EYES
P310Immediately call a POISON CENTER or doctor

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	132 °C / 269.6 °F
Transport (UN / ADR)	UN 2078 6.1 / PGII
Water hazard class (WGK, DE)	2
Hazard codes (EU)	T+
Risk statements (R)	26-36/37/38-40-42/43-52/53
Safety statements (S)	23-36/37-45-61

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

584-84-9

MDL number

MFCD00002011

Beilstein registry

744602

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Toluene 2,4-diisocyanate used for?

Toluene 2,4-diisocyanate is primarily used as a monomer in the synthesis of polyurethanes, which are then utilized in a wide range of applications including foams, elastomers, coatings, adhesives, and sealants.

What is the CAS number and chemical formula for Toluene 2,4-diisocyanate?

The CAS number for Toluene 2,4-diisocyanate is 584-84-9, and its chemical formula is C9H6N2O2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Toluene 2,4-diisocyanate with an assay of 95%, containing 4% 2,6-isomer as an impurity. We do not represent this product as USP, BP, or EP grade.

How should Toluene 2,4-diisocyanate be handled safely?

Toluene 2,4-diisocyanate is a hazardous substance (Danger) that can cause severe skin and eye irritation, respiratory irritation, and allergic reactions. It is also suspected of causing cancer. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and a full-face respirator with suitable cartridges, must be used in a well-ventilated area. Refer to the safety data sheet for comprehensive handling instructions.

How is Toluene 2,4-diisocyanate packed, shipped, and exported?

Toluene 2,4-diisocyanate is packed, shipped, and exported in compliance with relevant regulations. As a UN 2078, Class 6.1 hazardous material, specific packaging and transportation protocols are followed to ensure safe transit.

How can I request a quote or sample of Toluene 2,4-diisocyanate?

To request a quote or sample of Toluene 2,4-diisocyanate, please contact our sales team through the website or by phone, providing your specific requirements.