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7554-65-6

Name 4-Methylpyrazole
CAS 7554-65-6
EINECS(EC#) 231-445-0
Molecular Formula C4H6N2
MDL Number MFCD00005245
Molecular Weight 82.1
MOL File 7554-65-6.mol

Chemical Properties

Appearance clear colourless to yellowish liquid after melting
Melting point  13°C
Boiling point  99-100 °C6 mm Hg(lit.)
density  0.993 g/mL at 25 °C(lit.)
vapor pressure  7.136-87.85Pa at 20-50℃
refractive index  n20/D 1.495(lit.)
Fp  205 °F
storage temp.  2-8°C
solubility  soluble
form  Liquid After Melting
pka 14.95±0.50(Predicted)
color  Clear colorless to yellow
Specific Gravity 0.993
Water Solubility  soluble
Sensitive  Hygroscopic
Detection Methods GC
Merck  14,4216
BRN  105204
LogP 1.097 (est)
CAS DataBase Reference 7554-65-6(CAS DataBase Reference)
NIST Chemistry Reference 4-methylpyrazole(7554-65-6)

Safety Data

Hazard Codes  Xn
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S24/25:Avoid contact with skin and eyes .
RIDADR  2810
WGK Germany  3
RTECS  UQ7350000
10-23
HazardClass  6.1(b)
PackingGroup  III
HS Code  29331990
Toxicity
LD50 (7 days) in mice, rats (mmol/kg): 3.8, 3.8 i.v.; 7.8, 6.5 orally (Magnusson)

Hazard Information

Material Safety Data Sheet(MSDS)

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