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


Overview
Brand: Alfa Aesar™

Manufacturer Part Number: A10253.09

UNSPSC: 12352005

Code: NEW

Additional Details:
Additional Details: CAS Number: 108-26-9 Weight: 0.01000kg


Quantity 10g

Product Code. 11423963

Quantity Price
1 £ 16.64 / 10g
Estimated Shipment date
from Supplier 16-05-2017
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Description and Specification

Chemical Identifiers

Chemical Name or Material 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
Molecular Formula C4H6N2O
Formula Weight 98.11
MDL Number MFCD00020699
Synonym 2,4-Dihydro-5-methyl-3H-pyrazol-3-one

Specification

Chemical Name or Material 3-Methyl-2-pyrazolin-5-one
CAS 108-26-9
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
Assay ≥98%
Molecular Formula C4H6N2O
Formula Weight 98.11
MDL Number MFCD00020699
Synonym 2,4-Dihydro-5-methyl-3H-pyrazol-3-one
Melting Point 220° to 224°C
Quantity 10g

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.

Documentation

Technical documents

Safety and Handling

Warning

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

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.