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791-28-6

Name Triphenylphosphine oxide
CAS 791-28-6
EINECS(EC#) 212-338-8
Molecular Formula C18H15OP
MDL Number MFCD00002080
Molecular Weight 278.28
MOL File 791-28-6.mol

Chemical Properties

Appearance White solid
Melting point  150-157 °C(lit.)
Boiling point  360 °C
density  1,212 g/cm3
vapor pressure  <1 hPa (50 °C)
Fp  180 °C
storage temp.  Store at RT.
solubility  methanol: 25 mg/mL, clear
form  Crystalline Powder or Flakes
color  White to pink-brown
Specific Gravity 1.212
Water Solubility  slightly soluble
Hydrolytic Sensitivity 4: no reaction with water under neutral conditions
BRN  745854
CAS DataBase Reference 791-28-6(CAS DataBase Reference)
NIST Chemistry Reference (C6H5)3PO(791-28-6)
EPA Substance Registry System 791-28-6(EPA Substance)

Safety Data

Hazard Codes  Xn,Xi
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S36:Wear suitable protective clothing .
RIDADR  3077
WGK Germany  2
RTECS  SZ1676000
Autoignition Temperature 590 °C
TSCA  Yes
HazardClass  9
PackingGroup  III
HS Code  29310095
Toxicity
LD50 orally in Rabbit: 685 mg/kg

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Hazard Information

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