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Name 4-Acetamidophenol
CAS 103-90-2
EINECS(EC#) 203-157-5
Molecular Formula C8H9NO2
MDL Number MFCD00002328
Molecular Weight 151.16
MOL File 103-90-2.mol

Chemical Properties

Appearance White Solid
Melting point  168-172 °C(lit.)
Boiling point  273.17°C (rough estimate)
density  1,293 g/cm3
vapor pressure  0.008Pa at 25℃
refractive index  1.5810 (rough estimate)
Fp  11 °C
storage temp.  Inert atmosphere,Room Temperature
solubility  ethanol: soluble0.5M, clear, colorless
form  Crystals or Crystalline Powder
pka 9.86±0.13(Predicted)
color  White
PH 5.5-6.5 (H2O, 20℃)(saturated solution)
PH Range 5.5 - 6.5 (H?O, 20 °C) (saturated solution)
explosive limit 15%(V)
Water Solubility  14 g/L (20 ºC)
Usage Analgesic; antipyretic
Merck  14,47
BRN  2208089
LogP 1.098 at 25℃
CAS DataBase Reference 103-90-2(CAS DataBase Reference)
IARC 3 (Vol. 50, 73) 1999
NIST Chemistry Reference Acetaminophen(103-90-2)
EPA Substance Registry System 103-90-2(EPA Substance)

Safety Data

Hazard Codes  Xn
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 .
R36/38:Irritating to eyes and skin .
R40:Limited evidence of a carcinogenic effect.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S37/39:Wear suitable gloves and eye/face protection .
S22:Do not breathe dust .
WGK Germany  1
RTECS  AE4200000
Autoignition Temperature 540 °C
HazardClass  9
PackingGroup  III
HS Code  29242930
Hazardous Substances Data 103-90-2(Hazardous Substances Data)
LD50 in mice (mg/kg): 338 orally (Starmer), 500 i.p. (Dahlin, Nelson)

Hazard Information

Material Safety Data Sheet(MSDS)

Questions And Answer

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