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Toluene diisocyanate

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Identification
Molecular formula
C9H6N2O2
CAS number
26471-62-5
IUPAC name
2,4-diisocyanato-1-methyl-benzene
State
State

At room temperature, toluene diisocyanate is a liquid rather than a solid or gas.

Melting point (Celsius)
-24.00
Melting point (Kelvin)
249.15
Boiling point (Celsius)
251.50
Boiling point (Kelvin)
524.65
General information
Molecular weight
174.16g/mol
Molar mass
174.1560g/mol
Density
1.2158g/cm3
Appearence

Toluene diisocyanate is a colorless to pale yellow liquid. It has a pungent odor, which can be irritating to humans.

Comment on solubility

Solubility of 2,4-Diisocyanato-1-methyl-benzene

2,4-Diisocyanato-1-methyl-benzene, commonly known as toluene-2,4-diisocyanate (TDI), exhibits specific characteristics regarding its solubility. Understanding its solubility properties is crucial for applications in various chemical processes and industries.

Key Points on Solubility:

  • Polar Solvents: TDI is soluble in polar solvents such as ethyl acetate and acetone.
  • Non-Polar Solvents: It shows some solubility in non-polar solvents like toluene and xylene.
  • Water Misery: TDI is not soluble in water, which is critical to note for handling and environmental considerations.
  • Temperature Dependency: The solubility may also be influenced by temperature, typically increasing with higher temperatures.

In summary, when working with 2,4-diisocyanato-1-methyl-benzene, it is essential to use appropriate solvents to ensure effective dissolution. As with many isocyanates, caution should be exercised due to their reactive nature when mixed with various compounds.

Interesting facts

Interesting Facts about 2,4-Diisocyanato-1-methyl-benzene

2,4-Diisocyanato-1-methyl-benzene, commonly referred to as TDI, is a fascinating and significant compound primarily used in the production of flexible polyurethane foams. This compound has a rich history and a wide array of applications that make it a notable subject of study in the field of chemistry.

Key Applications

  • Polyurethane Production: TDI is a vital ingredient in the manufacture of flexible foams which are used in mattresses, cushions, and automotive seating.
  • Coatings and Adhesives: It serves as a hardener for polyurethane coatings and adhesives, enhancing durability and flexibility.
  • Textile Industry: TDI is utilized in the treatment of fabrics, making them more resilient and water-resistant.

Unique Properties

This compound possesses unique properties due to its isocyanate groups, leading to various chemical reactions that are critical in forming polymers. The isocyanate functional groups react with amines and alcohols, allowing TDI to be a versatile reactant in polymer chemistry. This makes it an essential compound for various industrial applications, including:

  • Customization of foam density and firmness.
  • Modification of polymer chain length, affecting mechanical properties.

Health and Safety

While TDI plays a crucial role in manufacturing, safety precautions are paramount due to its potential health hazards. Scientists often emphasize the importance of:

  • Using personal protective equipment (PPE) when handling TDI.
  • Working in well-ventilated areas to minimize inhalation risks.
  • Following guidelines for safe storage and disposal to prevent environmental contamination.

Conclusion

In conclusion, 2,4-Diisocyanato-1-methyl-benzene is much more than just a chemical compound; it is a cornerstone of the polyurethane industry with significant impacts on modern manufacturing and everyday life. Through understanding the properties and applications of TDI, one can appreciate its importance while recognizing the need for responsible handling. As quoted in many safety guidelines, “With great chemical power comes great responsibility.”

Synonyms
2,4-Diisocyanato-1-methylbenzene
584-84-9
TOLUENE DIISOCYANATE
2,4-Toluene diisocyanate
2,4-Diisocyanatotoluene
Tolylene-2,4-diisocyanate
TOLUENE 2,4-DIISOCYANATE
Toluene-2,4-diisocyanate
Tolylene diisocyanate
2,4-Tolylene diisocyanate
4-Methyl-m-phenylene diisocyanate
2,4-TDI
Benzene, 2,4-diisocyanato-1-methyl-
Toluylene-2,4-diisocyanate
Hylene tlc
Tolylene 2,4-diisocyanate
Di-iso-cyanatoluene
TDI
Hylene T
Diisocyanat-toluol
Mondur TD
Toluen-disocianato
Mondur TDS
Tuluylendiisocyanat
2,4-Toluenediisocyanate
Desmodur T80
Tolueen-diisocyanaat
Toluilenodwuizocyjanian
Mondur TD-80
Cresorcinol diisocyanate
Isocyanic acid, 4-methyl-m-phenylene ester
Tolyene 2,4-diisocyanate
Di-isocyanate de toluylene
RCRA waste number U223
NCI-C50533
NSC 4791
TDI-80
4-Methyl-1,3-phenylene diisocyanate
Nacconate 100
toluene-2,4-diyl diisocyanate
4-Methyl-m-phenylene isocyanate
1321-38-6
DTXSID7026156
CHEBI:53556
MFCD00002011
17X7AFZ1GH
CHEMBL1086446
NSC-4791
Isocyanic acid, methylphenylene ester
NSC-56759
Nacconate IOO
WLN: OCNR B1 ENCO
DTXCID901361
Benzene,4-diisocyanato-1-methyl-
Toluene diisocyanate, commercial grade (2,4 (80%)- and 2,6 (20%)-)
Diisocyanat-toluol [German]
Tuluylendiisocyanat [German]
NSC 56759
Tolueen-diisocyanaat [Dutch]
Toluen-disocianato [Italian]
CAS-584-84-9
Toluene, 2,4-diisocyanato-
CCRIS 3742
HSDB 874
Toluilenodwuizocyjanian [Polish]
2,4-diisocyanato-1-methyl-benzene
Di-isocyanate de toluylene [French]
EINECS 209-544-5
Isocyanic-14C acid, 4-methyl-m-phenylene ester
UNII-17X7AFZ1GH
2,4-Toluylene Diisocyanate
BRN 0744602
Hylene tcpa
AI3-15101
Hylene trf
Hylene tm
tolylenediisocyanate
Hylene tm-65
4963-53-5
2,4-tolylenediisocyanate
Rubinate TDI 80/20
2,4-DIISOCYANATE
DSSTox_CID_1361
Epitope ID:115138
4-methyl-m-phenylene ester
EC 209-544-5
Benzene, diisocyanatomethyl-
DSSTox_RID_77374
DSSTox_GSID_24341
SCHEMBL15384
2,4-TDI, analytical standard
2,4-Diisocyanato-1-methylbenzene [Toluenediisocyanates]
NSC4791
Tolylene-2,4-diisocyanate, 95%
TOLUENE 2,4-DI-ISOCYANATE
NSC56759
TOLUENE DIISOCYANATE, 2,4-
Tox21_200144
Tox21_202058
Tox21_300160
BDBM50318488
STL301891
Tolylene Diisocyanate (2,4, 2,6)
AKOS000119430
TOLUENE 2,4-DIISOCYANATE [MI]
Toluene-2,4-diisocyanate, tech. 80%
NCGC00091095-01
NCGC00091095-02
NCGC00091095-03
NCGC00091095-04
NCGC00091095-05
NCGC00253965-01
NCGC00257698-01
NCGC00259607-01
TOLUENE 2,4-DIISOCYANATE [HSDB]
BS-44197
FT160363
Tolylene Diisocyanate (MIX OF ISOMERS)
2,4- & 2,6-TOLUENE DIISOCYANATE
CAS-26471-62-5
NS00005144
T0263
EN300-20220
A831895
Q415183
Tolylene-2,4-diisocyanate, technical grade, 80%
Z104477324
Toluene 2,4-diisocyanate, purum, for electron microscopy, >=98.0% (GC)
InChI=1/C9H6N2O2/c1-7-2-3-8(10-5-12)4-9(7)11-6-13/h2-4H,1H