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Diethyl maleate CAS 141-05-9 DEM

Diethyl maleate is a colorless transparent liquid, miscible with a variety of organic solvents, partially soluble in benzene and chloroform, 1.4% soluble in water at 30 ℃; water in diethyl maleate 1.9% soluble. With 88.2% of water to form an azeotropic mixture, azeotropic point 99.65 ℃. Diethyl maleate is a maleate ester formed by the formal condensation of the two carboxyl groups of maleic acid with ethanol, a sulfhydryl-reactive α,β-unsaturated carbonyl compound that depletes glutathione from exposed cells.


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Model:
141-05-9
Brand:
boss chem
Code:
141-05-9

Product Description

Diethyl maleate DEM

CAS No.141-05-9

Alias: (Z)-2-BUTENEDIOICACIDDIETHYLESTER;(Z)-DIETHYL-2-HYDROXYBUTENEDIOATE;MALEICACIDDIETHYLESTER;Diethyl(2Z)-2-butChemicalbookenedioate;Diethylesterkyselinymaleinove;diethylesterkyselinymaleinove;kIaleins5urediαthylester;DIETHYLMALEATE

Molecular formula: C8H12O4

Relative molecular mass: 172.18

Structural formula:

141-05-9

1. Performance and use:

Diethyl maleate is a colorless clear liquid between the temperatures of -10°C (pour point) and 225°C (boiling point). Insoluble in water, soluble in ethanol and ether. its odor type is fruity and its odor at 100% is described as "fruity bananacitrus".

Diethyl maleate can be used for the preparation of organophosphorus insecticide malathion.

Diethyl maleate is unsaturated polyester resins that are used in applications, such as reinforced glass fiber for boats, piping, bathtubs, roof panels, etc., and as protective coatings, finishes, and lacquers.

Diethyl Maleate is used as a reagent in the synthesis of several organic compounds including that of polyaspartic acid ester based polyurea coatings.

2. Technical indicators

Diethyl maleate Chemical Properties

Melting point	-10 °C (lit.)
Boiling point	225 °C (lit.)
density	1.064 g/mL at 25 °C (lit.)
vapor density	5.93 (vs air)
vapor pressure	1 mm Hg ( 14 °C)
refractive index	n20/D 1.441(lit.)
Fp	200 °F
storage temp.	Sealed in dry,Room Temperature
solubility	14mg/l
form	Liquid
color	Clear
Odor	at 100.00 %. fruity banana citrus
Odor Type	fruity
Water Solubility	insoluble
Merck	14,3123
BRN	1100825
Dielectric constant	8.6（23℃）
Stability:	Stable. Combustible. Incompatible with oxidizing agents, bases, acids, reducing agents.
InChIKey	IEPRKVQEAMIZSS-AATRIKPKSA-N
LogP	2.2
CAS DataBase Reference	141-05-9
NIST Chemistry Reference	2-Butenedioic acid (Z)-, diethyl ester(141-05-9)
EPA Substance Registry System	2-Butenedioic acid (2Z)-, 1,4-diethyl ester (141-05-9)

Specification	Super Grade	First Grade	Qualified Grade
Colourity(Pt-Co),code No. ≤	20	40	60
Acid value,mgKOH/g ≤	0.10	0.15	0.20
Density(20℃),g/cm3	1.065±0.003
Content(GC),% ≥	97.0	95.0	93.0
Trans content(GC),% ≤	3.0	4.0	6.0
Water content,% ≤	0.10	0.15	/