Lactic acid methyl ester
Structural formula | |||||||||||||||||||
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Serpentine = indeterminate stereochemistry | |||||||||||||||||||
General | |||||||||||||||||||
Surname | Lactic acid methyl ester | ||||||||||||||||||
other names |
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Molecular formula | C 4 H 8 O 3 | ||||||||||||||||||
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properties | |||||||||||||||||||
Molar mass | 104.11 g mol −1 | ||||||||||||||||||
Physical state |
liquid |
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density |
1.09 g cm −3 (20 ° C) |
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boiling point |
144 ° C |
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Vapor pressure |
3.4 hPa (20 ° C) |
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Refractive index |
1.4130 |
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safety instructions | |||||||||||||||||||
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Toxicological data |
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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 |
Lactic acid methyl ester, also known as methyl lactate or 2-hydroxypropanoic acid methyl ester , is the ester of methanol and lactic acid . The compound is mainly used as a solvent. The vapors form explosive mixtures with air from a concentration of 2.2 % by volume .
Manufacturing
Lactic acid methyl ester can be produced by esterifying lactic acid and methanol. An alternative method is to prepare it by reacting lactic acid with diazomethane .
use
The colorless liquid is suitable as a polar solvent for nitrocellulose and is still used as a solvent u. a. used in paints.
Individual evidence
- ↑ a b c d e f g Entry on lactic acid methyl ester in the GESTIS substance database of the IFA , accessed on August 2, 2018 (JavaScript required)
- ↑ a b c Entry on lactic acid ester. In: Römpp Online . Georg Thieme Verlag, accessed on August 2, 2018.
- ↑ Entry on Methyl lactate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 2, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Joachim Buddrus, Bernd Schmidt: Fundamentals of organic chemistry . 5th edition. De Gruyter, 2015, ISBN 978-3-11-033105-9 , April 18, 5, pp. 526 ( limited preview in Google Book search).