3-methyl-2-pyrazolin-5-one
Names
[ CAS No. ]:
108-26-9
[ Name ]:
3-methyl-2-pyrazolin-5-one
[Synonym ]:
2,4-Dihydro-5-methyl-3H-pyrazol-3-one
MFCD00020699
3-Methyl-5-pyrazolone
EINECS 203-565-3
5-Methyl-2,4-dihydro-3H-pyrazol-3-one
3-methyl-1,4-dihydropyrazol-5-one
3-Methyl-1H-pyrazol-5(4H)-one
3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-
3-methyl-2-pyrazolin-5-one
Chemical & Physical Properties
[ Density]:
1.3±0.1 g/cm3
[ Boiling Point ]:
309.7ºC at 760 mmHg
[ Melting Point ]:
220-224 °C
[ Molecular Formula ]:
C4H6N2O
[ Molecular Weight ]:
98.103
[ Flash Point ]:
141.1ºC
[ Exact Mass ]:
98.048012
[ PSA ]:
41.46000
[ LogP ]:
-1.08
[ Vapour Pressure ]:
0.000345mmHg at 25°C
[ Index of Refraction ]:
1.599
[ Storage condition ]:
2~8°C
MSDS
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- UQ9451500
- CHEMICAL NAME :
- 2-Pyrazolin-5-one, 3-methyl-
- CAS REGISTRY NUMBER :
- 108-26-9
- LAST UPDATED :
- 199701
- DATA ITEMS CITED :
- 2
- MOLECULAR FORMULA :
- C4-H6-N2-O
- MOLECULAR WEIGHT :
- 98.12
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Unreported
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 600 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- BCPCA6 Biochemical Pharmacology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.1- 1958- Volume(issue)/page/year: 14,1325,1965
Safety Information
[ Personal Protective Equipment ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
[ Hazard Codes ]:
Xi
[ Risk Phrases ]:
36/37/38
[ Safety Phrases ]:
S24/25
[ RIDADR ]:
NONH for all modes of transport
[ RTECS ]:
UQ9451500
[ HS Code ]:
2933199090
Synthetic Route
Precursor & DownStream
Precursor
DownStream
Customs
[ HS Code ]: 2933199090
[ Summary ]:
2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%