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128-53-0

Name N-Ethylmaleimide
CAS 128-53-0
EINECS(EC#) 204-892-4
Molecular Formula C6H7NO2
MDL Number MFCD00005509
Molecular Weight 125.13
MOL File 128-53-0.mol
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Chemical Properties

Appearance White solid
Melting point  43-46 °C(lit.)
Boiling point  210 °C(lit.)
density  1.2500 (rough estimate)
refractive index  1.4430 (estimate)
Fp  73 °C
storage temp.  2-8°C
solubility  methanol: 1 M at 20 °C, clear, colorless
form  Crystalline Powder
pka -2.18±0.20(Predicted)
color  White to off-white
Stability: Stable. Combustible. Incompatible with strong oxidizing agents. Refrigerate.
Water Solubility  1 g/L (20 ºC)
Sensitive  Light Sensitive
Merck  14,3822
BRN  112448
InChIKey HDFGOPSGAURCEO-UHFFFAOYSA-N
CAS DataBase Reference 128-53-0(CAS DataBase Reference)
NIST Chemistry Reference 1H-pyrrole-2,5-dione, 1-ethyl-(128-53-0)
Storage Precautions Store under nitrogen
EPA Substance Registry System N-Ethylmaleimide (128-53-0)
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Safety Data

Hazard Codes  T+
Risk Statements 
R21:Harmful in contact with skin.
R28:Very Toxic if swallowed.
R34:Causes burns.
R43:May cause sensitization by skin contact.
R20/21:Harmful by inhalation and in contact with skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 2928 6.1/PG 2
WGK Germany  3
RTECS  UX9625000
F  19
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29251900
Safety Profile
Poison by intraperitoneal route. Human mutation data reported. Vapors are hlghly irritating. When heated to decomposition it emits toxic fumes of NOx.

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