Diethyl maleate CAS 141-05-9 DEM

Colorless and transparent liquid, miscible with many organic solvents, partially soluble in benzene and chloroform, and dissolves 1.4% in water at 30℃. Water dissolves 1.9% in diethyl maleate. It forms an azeotropic mixture with 88.2% water, with an azeotropic point of 99.65℃. Diethyl maleate is a maleate ester formed by the formal condensation of two carboxyl groups of maleic acid with ethanol. It is a thiol-reactive α, β -unsaturated carbonyl compound that can consume glutathione in exposed cells.

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Model:
141-05-9
Brand:
futurechemical
Code:
141-05-9

Product Description

Diethyl maleate Basic information
Product Name:	Diethyl maleate
CAS:	141-05-9
MF:	C8H12O4
MW:	172.18
EINECS:	205-451-9
Mol File:	141-05-9.mol
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
biological source	synthetic
Water Solubility	insoluble
Merck	143,123
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(CAS DataBase Reference)
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)

Diethyl maleate 141-05-9 DEM C8H12O4 Metalworking fluid rust preventive additive Resin solvent and plasticizer Water quality stabilizer Daily chemical fragrance

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.