3-methyl-2-pyrazolin-5-one

Modify Date: 2024-01-02 18:47:17

3-methyl-2-pyrazolin-5-one Structure
3-methyl-2-pyrazolin-5-one structure
 Common Name 3-methyl-2-pyrazolin-5-one
CAS Number 108-26-9 Molecular Weight 98.103
Density 1.3±0.1 g/cm3 Boiling Point 309.7ºC at 760 mmHg
Molecular Formula C4H6N2O Melting Point 220-224 °C
MSDS USA Flash Point 141.1ºC

 Names

Name 3-Methyl-2-pyrazolin-5-one
Synonym More Synonyms

 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

 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

 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%

 Synonyms

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
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