Aromatic Isocyanates

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Benzene, 1,4-diisocyanato CAS # 104-49-4, 27359-20-2
Applications for polyurethanes with a high degree of phase separation, this results in polyurethanes with improved abrasion resistance and higher temperature performance characteristics.

Physical properties:

 

Information from Dupont's web site, see under suppliers for the latest information

 

 

 

 

 

 

Formula C6H4(NCO)2
CAS Registry No.. 104-49-4
Molecular Weight 160.1
NCO Content, % 52.5
Isocyanate Equivalent Weight 80.0
Melting Point, °C (°F) 94 (201)
Boiling Point, 760 mm Hg,°C(°F) 260 (500)
Vapor Pressure at 20°C, mm Hg
Vapor Pressure at 95°C, mm Hg		 0.002
5.07
Specific Gravity at 100°C 1.17
Flash Point, CCCM, °C (°F) 120 (248)
Viscosity at 100 °C, cp 1.13
Heat of Fusion, J/kg
Heat of Fusion, cal/g		 184
44
Specific Heat, capacity J/kg·K
Specific Heat, capacity cal/g·C		 1.26
0.3
Toxicity Product is toxic and any contact with skin, eyes is to be avoided.

Contact Dupont for MSDS

Solubility
g/100g Solvent
Solvent 23°C 40°C
Toluene 13 23
Acetone 16 25
Ethyl Acetate 16 28
Cellosolve Acetate 13 16
Tetrahydrofuran 21 28
Perchloroethylene 7 14
Regulatory Inventory
CAS REGISTRY NUMBER

# 104-49-4, 27359-20-2

 NAME : 1,4-Diisocyanatobenzene
TSCA USA Yes
DSL Canada NDSL
EINECS Europe   Yes
ECL Korea ECL Serial No. KE-10909 Yes
ENCS Japan ENCS No. 3-2215X Yes
AICS Australia No
The fact that a compound is not listed under a specific CAS # in a countries inventory does not mean this compound cannot be used, it can be an exempt compound or polymer which does not require listing, or it can be listed in a different category. Ask your supplier.
Other names: 
1,4-Diisocyanatobenzene
1,4-Phenylene diisocyanate
1,4-Phenylenebis(isocyanate)
Isocyanic acid, p-phenylene ester
p-Phenylene isocyanate
Commercial Products or generic terms used for products. For manufacturer see Isocyanate MFCT.
HYLENE® PPDI

Last edited on:

 July 06, 2006

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