3-Methyl-2-pyrazolin-5-one

Details:

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.
pka    13.10±0.40(Predicted)
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    3H-Pyrazol-3-one, 2,4-dihydro-5-methyl- (108-26-9)
Safety Information
Risk Statements     36/37/38
Safety Statements     24/25
WGK Germany     3
RTECS     UQ9451500
TSCA     Yes
HS Code     29331990
MSDS Information
Provider    Language
5-Methyl-2,4-dihydro-pyrazol-3-one    English
ACROS    English
ALFA    English
3-Methyl-2-pyrazolin-5-one Usage And Synthesis
Chemical Properties    3-Methyl-2-pyrazolin-5-one is yellowish powder
Uses    3-Methyl-2-pyrazolin-5-one is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
3-Methyl-2-pyrazolin-5-one Preparation Products And Raw materials
Raw materials    1-Acetyl-2-phenylhydrazine-->Ethyl acetoacetate
Preparation Products    ACID YELLOW 11-->CIBACRON BRILLIANT YELLOW 3G-P-->Reactive Light Yellow M-5G-->ACID YELLOW 76 (C.I. 18850)-->Acid Yellow 127-->PROCION YELLOW H-E3G-->Neutral Red 2gl-->Reactive Yellow 18-->Acid Red 215-->Acid Yellow 117-->disodium 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate-->4-CHLOROBENZYLIDENEMALONONITRILE-->METHYL 2-BUTYNOATE-->1,2-Bis(4-pyridylcarbonyl)hydrazine-->DIRECT YELLOW 127-->Chromate(1-), bis[N-[3-[2-[4,5-dihydro-3-methyl-5-(oxo-κO)-1H-pyrazol-4-yl]diazenyl-κN1]-2-(hydroxy-κO)-5-nitrophenyl]acetamidato(2-)]-, hydrogen (1:1)