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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 8610Generated: October 23, 2026

Diethyl ethylmalonate

Diethyl 2-ethylmalonate · DEEM · Ethylmalonicester · Ethylethylmalonate · Diethylethylmalonat · Diethyl Ethylmalote · DIETHYL ETHYLAMAONATE · DIETHYL ETHYLMALONATE

https://huagongshe.com/en/chemical/8610

Diethyl ethylmalonate molecular structure

Identifiers & Physical Properties

CAS No.133-13-1
Molecular formulaC9H16O4
Average molar mass188.22 g/mol
Monoisotopic mass188.10485899 g/mol
SMILESCCOC(=O)C(CC)C(=O)OCC
InChIKeyVQAZCUCWHIIFGE-UHFFFAOYSA-N
PubChem CID8610
EC No.205-093-3
DTXSIDDTXSID7038739

Chemical & Physical Properties

XLogP1.8
Topological polar surface area52.6
Hydrogen bond donors0
Hydrogen bond acceptors4
Rotatable bonds7
Heavy atoms13
Formal charge0
Complexity158
Chemical classesOther Classes -> Esters, Other
SpringerMaterials PropertiesBoiling point
Physical DescriptionClear colorless liquid[Acros Organics MSDS]
Melting point0°C
Boiling point75-77 °C/5 mmHg (lit.)
Density1.004 g/mL at 25 °C (lit.)
Refractive indexn20/D 1.416(lit.)
Flash point191 °F
Storage conditionsStore below +30°C.
Solubility2.87g/limmiscible
Physical stateLiquid
pKa (acidity coefficient)13.17±0.46(Predicted)
ColorClear colorless
pH4.46 at 24.3℃ and 10g/L
BRN607635
InChI1S/C9H16O4/c1-4-7(8(10)12-5-2)9(11)13-6-3/h7H,4-6H2,1-3H3
InChIKeyVQAZCUCWHIIFGE-UHFFFAOYSA-N
SMILESCCOC(=O)C(CC)C(=O)OCC
LogP (partition coefficient)2.4 at 30℃ and pH7.93
CAS DataBase Reference133-13-1(CAS DataBase Reference)
FDA UNII69G92OYR3M
NIST Chemistry ReferencePropanedioic acid, ethyl-, diethyl ester(133-13-1)
EPA Substance Registry SystemPropanedioic acid, ethyl-, diethyl ester (133-13-1)
UNSPSC Code12352108
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH227
GHS precautionary statementsP210e-P280a-P370+P378a-P403+P235-P501a
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsXi
Risk statements (R)36/37/38
Safety statements (S)24/25-36-26
Water hazard class (WGK)2
TSCA inventory statusTSCA listed
Customs code29171990
Storage class10 - Combustible liquids
ToxicityLD50 orally in Rabbit: > 2000 mg/kg LD50 dermal Rat > 2000 mg/kg
REACH registrationsActive

Safety & Regulations

GHS classificationThis chemical does not meet GHS hazard criteria for 45.5% (5 of 11) of reports.WarningH227 (54.5%): Combustible liquid [Warning Flammable liquids]P210, P280, P370+P378, P403, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 11 reports by companies from 2 notifications to the ECHA C&L Inventory.
Regulatory informationChemical: Propanedioic acid, 2-ethyl-, 1,3-diethyl esterStatus: Active Update: 05-02-2019 https://echa.europa.eu/registration-dossier/-/registered-dossier/17932Diethyl ethylmalonate: Does not have an individual approval but may be used under an appropriate group standard
Other safety informationEvaluation - Chemicals that are unlikely to require further regulation to manage risks to human health
Hazards summaryMay cause irritation[Acros Organics MSDS] See Dimethyl malonate and Ethyl malonate.
Hazard Classes and CategoriesFlam. Liq. 4 (54.5%)
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)2
TSCA inventory statusTSCA listed
Customs code29171990
ToxicityLD50 orally in Rabbit: > 2000 mg/kg LD50 dermal Rat > 2000 mg/kg
Risk statements (R)36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)24/25-36-26
Storage class10 - Combustible liquids
GHS hazard statementsH227
REACH registrationsActive
GHS precautionary statementsP210e-P280a-P370+P378a-P403+P235-P501a

Applications & Uses

Uses

Diethyl Ethylmalonate is used in the synthesis of HIV-1 reverse transcriptase inhibitors. Also used in the preparation of Peloruside A, a novel antimitotic agent used as a potential anti-cancer agent.