Molecular Structure:

Molecular Formula: C₃H₈N₂O
Molecular Weight: 88.1084
IUPAC Name: Ethylurea
Synonyms of Polyurethane foam (CAS NO.9009-54-5): Polyurethane foam [USAN] ; Andur ; Curene ; Etheron ; Etheron sponge ; Isourethane ; NCI-C56451 ; Ostamer ; Pliogrip ; Polyfoam plastic sponge ; Polyfoam sponge ; Polylurethane ; Polyurethane ; Polyurethane A ; Polyurethane ester foam ; Polyurethane ether foam ; Polyurethane sponge ; Spenkel ; Spenlite ; Urethane polymers
CAS NO: 9009-54-5
Classification Code: Human Data ; Prosthetic aid [internal bone splint] ; Tumor data
Index of Refraction: 1.44
Molar Refractivity: 23.1 cm³
Molar Volume: 87.6 cm³
Surface Tension: 35.2 dyne/cm
Density: 1.005 g/cm³
Flash Point: 36.2 °C
Enthalpy of Vaporization: 37.37 kJ/mol
Boiling Point: 136.3 °C at 760 mmHg
Vapour Pressure: 7.44 mmHg at 25°C

  Polyurethane foam (CAS NO.9009-54-5) are used in aviation, railways, architecture, sports, etc. It can be used for precast polyurethane board. It also can be used in the manufacture of plastic products, wear-resisting synthesis rubber products, synthetic fiber, hard and soft foam plastics, adhesives and coating.

  Polyurethane foams (CAS NO.9009-54-5) are manufactured from a diisocyanate, such as toluene diisocyanate (TDI), and a low-molecular-weight polyether such as poly (propylene glycol).
In the process, a small amount of water is added to convert some isocyanate functionalities into carbon dioxide and amines. The degree of foaming can be controlled by the amount of water added.
 One way of obtaining the more useful cross-linked polyurethanes is by using a trifunctional reagent. Thus either the toluene diisocyanate can react with a triol or the propylene oxide can be polymerized in the presence of a triol.

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 19 ,1979,p. 303.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid toxic fumes of CN⁻ and NO_x.
Combustible. Incompatible with strong oxidizing agents.
Personal protection: Avoid generation of dust or fine particles.