108-26-9

Name 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
EINECS(EC#) 203-565-3
Molecular Formula C4H6N2O
MDL Number MFCD00020699
Molecular Weight 98.1
MOL File 108-26-9.mol
show more

Chemical Properties

Appearance Yellowish powder
Melting point  220-224 °C
Boiling point  183.6°C (rough estimate)
density  1.1890 (rough estimate)
refractive index  1.4327 (estimate)
storage temp.  Sealed in dry,Room Temperature
solubility  Slightly soluble in ethanol.
form  powder to crystal
pka 13.10±0.40(Predicted)
color  White to Light yellow
Usage 3-Methyl-5-pyrazolone is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
InChI InChI=1S/C4H6N2O/c1-3-2-4(7)6-5-3/h2H2,1H3,(H,6,7)
InChIKey NHLAPJMCARJFOG-UHFFFAOYSA-N
SMILES N1=C(C)CC(=O)N1
CAS DataBase Reference 108-26-9(CAS DataBase Reference)
NIST Chemistry Reference 3H-pyrazol-3-one, 2,4-dihydro-5-methyl-(108-26-9)
EPA Substance Registry System 108-26-9(EPA Substance)

Safety Data

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S24/25:Avoid contact with skin and eyes .
WGK Germany  3
RTECS  UQ9451500
TSCA  Yes
REACH Registrations Active
HS Code  29331990
Toxicity
rat,LDLo,unreported,600mg/kg (600mg/kg),Biochemical Pharmacology. Vol. 14, Pg. 1325, 1965.

Raw materials And Preparation Products

Hazard Information

Material Safety Data Sheet(MSDS)

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

Related Products

Send Inquriy