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Alfa Aesar™ 3-Methyl-2-pyrazolin-5-one, 98+%

$52.05 - $192.27

Chemical Identifiers

Chemical Name or Material 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
Molecular Formula C4H6N2O
Formula Weight 98.11g/mol
MDL Number MFCD00020699
Synonym 2,4-Dihydro-5-methyl-3H-pyrazol-3-one
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA1025309

 
alfa aesar™
A10253-09
10g Each for $52.05

AAA1025318

 
alfa aesar™
A10253-18
50g Each for $192.27
Description & Specifications

Specifications

Melting Point 220° to 224°C
Quantity 10g
Chemical Name or Material 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
Assay ≥98%
Molecular Formula C4H6N2O
Formula Weight 98.11g/mol
MDL Number MFCD00020699
Synonym 2,4-Dihydro-5-methyl-3H-pyrazol-3-one
Health Hazard 1 Warning
Health Hazard 2 GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.
Health Hazard 3 GHS P Statement
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
RTECS Number UQ9451500
TSCA TSCA

Applications
3-Methyl-2-pyrazolin-5-one is used in the preparation of spirocyclic [indole-3,4′-pyrano[2,3-c]pyrazole] by reacting with isatins and malonitrile in the presence of sodium bromide as electrolyte.

Solubility
Slightly soluble in ethanol.

Notes
Incompatible with oxidizing agents.

Safety and Handling

Warning

GHS P Statement
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.

GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.