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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 14293Generated: October 23, 2026

2,3-Dichloro-N-methylmaleimide

SALOR-INT L132209-1EA · dichloro-n-methylmaleimide · n-methyldichloromaleinimide · 2,3-Dichloro-N-methylmaleimide · 2,3-dichloro-n-methyl-maleimid · 3,4-DICHLORO-1-METHYL-PYRROLE-2,5-DIONE · 3,4-Dichloro-1-methyl-1H-pyrrole-2,5-dione · 1H-Pyrrole-2,5-dione, 3,4-dichloro-1-methyl-

https://huagongshe.com/en/chemical/14293

2,3-Dichloro-N-methylmaleimide molecular structure

Identifiers & Physical Properties

CAS No.1123-61-1
Molecular formulaC5H3Cl2NO2
Average molar mass179.99 g/mol
Monoisotopic mass178.9540837 g/mol
SMILESCN1C(=O)C(Cl)=C(Cl)C1=O
InChIKeyPYOLPWAVSYVLMM-UHFFFAOYSA-N
PubChem CID14293
EC No.601-181-4
DTXSIDDTXSID80149981

Chemical & Physical Properties

XLogP1.2
Topological polar surface area37.4
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds0
Heavy atoms10
Formal charge0
Complexity222
Melting point85℃
Boiling point205.7±40.0℃ (760 Torr)
Density1.63±0.1 g/cm3 (20 ºC 760 Torr)
Refractive index1.6100 (estimate)
Flash point78.2±27.3℃
Storage conditions2-8°C
pKa (acidity coefficient)-6.23±0.60(Predicted)
FDA UNIID5ARQ6B32V
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P313-P337+P313-P362-P403+P233-P405-P501
Customs code2933998090

Safety & Regulations

GHS classificationDangerH300 (100%): Fatal if swallowed [Danger Acute toxicity, oral]P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement)The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Hazard Classes and CategoriesAcute Tox. 2 (100%)
Customs code2933998090
Signal wordWarning
GHS pictogramGHS07
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P313-P337+P313-P362-P403+P233-P405-P501