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Toluene diisocyanate Structure

Toluene diisocyanate

Chemical Properties

Melting point 19.5~21.5℃
Boiling point 247℃
Density  1.22
refractive index  1.5660 to 1.5700
Flash point 137 °C
storage temp.  Store below +30°C.
solubility  miscible with Ether,Acetone,Benzene
form  clear liquid
color  Colorless to Light yellow
Odor Sharp, pungent odor
Viscosity 2.221mm2/s
Water Solubility  124mg/L at 25℃
LogP 3.43 at 22℃
Indirect Additives used in Food Contact Substances TOLUENE DIISOCYANATE
CAS DataBase Reference 26471-62-5(CAS DataBase Reference)
FDA UNII 9MTX1PK3QO
IARC 2B (Vol. 39, Sup 7, 71) 1999
EPA Substance Registry System Toluene diisocyanate (26471-62-5)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H315-H317-H319-H330-H334-H335-H351-H412
Precautionary statements P201-P273-P280-P302+P352-P304+P340+P310-P305+P351+P338
Risk Statements  26-36/37/38-40-42/43-52/53
Safety Statements  23-36/37/39-45-24/25
RIDADR  2078
RTECS  NQ9490000
HazardClass  6.1(a)
PackingGroup  II
HS Code  29291090
Hazardous Substances Data 26471-62-5(Hazardous Substances Data)
Toxicity A designated hazardous waste (EPA). It is a colorless to yellow solid, melting at about 20°C. TDI and MDI (diphenylmethane diisocyanate) are used in the manufacture of polyurethane foams by reaction with polyhydroxy compounds. These foams are used for insulation, upholstering, etc. Exposure is commonly by inhalation of the vapor. Both TDI and MDI can cause irritation of eyes and mucous membranes, in severe cases leading to pulmonary edema. Sensitization to TDI is common and frequently rapid, leading to an allergic reaction and some loss of lung function. In the United Kingdom, the threshold limit value is 0.02 ppm for not more than 20 min, or 0.005 ppm for 8 h.
NFPA 704:
1
3 2

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