Diethyl fumarate CAS 623-91-6 DEF

Diethyl fumarate is an organic compound with the chemical formula C₈H₁₂O₄, a molecular weight of 172.18, and a CAS number of 623-91-6. ‌
It is a colorless to slightly yellow liquid at room temperature, with a melting point of 1-2℃, a boiling point of 214-219℃ (760mmHg), a density of 1.052-1.068g/cm³, and a flash point of approximately 93.3-197°F. It is insoluble in water but soluble in organic solvents such as ethanol and ether. ‌

It is mainly used in the fields of chemical synthesis and materials science, such as dienophiles in the Diels-Alder reaction, and also in the development of photochemical 3D printing substrates and the study of polymer properties. Research in the biomedical field has found that it has the potential to inhibit GSK-3 and activate the Nrf2 signaling pathway.

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Model:
623-91-6
Brand:
futurechemical
Code:
623-91-6

Product Description

Diethyl fumarate Basic information
Product Name:	Diethyl fumarate
CAS:	623-91-6
MF:	C8H12O4
MW:	172.18
EINECS:	210-819-7
Mol File:	623-91-6.mol
Diethyl fumarate Chemical Properties
Melting point	1-2 °C (lit.)
Boiling point	218-219 °C (lit.)
density	1.052 g/mL at 25 °C (lit.)
refractive index	n20/D 1.44(lit.)
Fp	197 °F
storage temp.	Sealed in dry,Room Temperature
solubility	3.1g/l
form	Liquid
color	Clear colorless to slightly yellow
Water Solubility	immiscible
BRN	775347
Dielectric constant	6.5（23℃）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, acids, bases, reducing agents.
InChIKey	IEPRKVQEAMIZSS-AATRIKPKSA-N
LogP	2.200 (est)
Surface tension	31.4 mN/m at 22°
CAS DataBase Reference	623-91-6(CAS DataBase Reference)
NIST Chemistry Reference	2-Butenedioic acid (E)-, diethyl ester(623-91-6)
EPA Substance Registry System	Diethyl fumarate (623-91-6)

检测项目ITEM	标准STANDARD	分析结果RESULT
外观APPEARANCE	无色透明液体COLORLESS LIQUID	合格QUALIFIED
纯度PURITY	99.00%MIN	99.55%
水份MOISTURE	0.5%MAX	0.14%
检测结果RESULT	合格 QUALIFIED

Diethyl fumarate 623-91-6 DEF C8H12O4 Preservative

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.
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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.