Methyl acetoacetate
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Methyl acetoacetate | |||||||||||||||
other names |
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Molecular formula | C 5 H 8 O 3 | |||||||||||||||
Brief description |
colorless liquid with a pleasant odor |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 116.12 g mol −1 | |||||||||||||||
Physical state |
liquid |
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density |
1.08 g cm −3 |
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Melting point |
−80 ° C |
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boiling point |
170 ° C |
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Vapor pressure |
1.75 mbar (20 ° C) |
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solubility |
easily in water (863 g l −1 at 20 ° C) |
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Refractive index |
1.4185 (20 ° C, 589 nm) |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C |
Methylacetoacetate is a chemical compound from the group of substituted carboxylic acid esters and ketones .
Extraction and presentation
Methyl acetoacetate can be obtained by methoxycarbonylation of acetone with dimethyl carbonate .
properties
Methyl acetoacetate is a colorless, hardly inflammable and not very volatile liquid with a pleasant odor. It is easily soluble in water, whereby the aqueous solution reacts acidic. Methyl acetoacetate occurs as a metabolite of the pesticide mevinphos .
use
Methyl acetoacetate is used to synthesize other chemical compounds such as pyrazoles , pyrimidines, and coumarin derivatives .
safety instructions
The vapors of methyl acetoacetate can form an explosive mixture with air ( flash point 62 ° C, ignition temperature 280 ° C).
Related links
Individual evidence
- ↑ a b c d e f g h i j k Entry on methyl acetoacetate in the GESTIS substance database of the IFA , accessed on January 8, 2018(JavaScript required) .
- ↑ Data sheet methyl acetoacetate (PDF) from Merck , accessed on October 29, 2010.
- ↑ Entry on Methyl acetoacetate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- ^ Dudu Wu, Zhi Chen: Synthesis of methyl acetoacetate from acetone and dimethyl carbonate with alkali-promoted MgO catalysts. In: Chemical Papers. 64, 2010, doi : 10.2478 / s11696-010-0068-9 .
- ^ Joint Meeting on Pesticide Residues (JMPR), Monograph for Mevinphos , accessed December 9, 2014.