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N-ethylmaleimide 128-53-0 MSDS
Name: n-Ethylmaleimide 99+% Material Safety Data Sheet
Synonym: 1-Ethyl-1H-Pyrrole-2,5-Dione; NEM; Cryptopyrrole; Maleic acid n-ethylimide
CAS: 128-53-0
Section 1 - Chemical Product   MSDS Name:n-Ethylmaleimide 99+% Material Safety Data Sheet
Synonym:1-Ethyl-1H-Pyrrole-2,5-Dione; NEM; Cryptopyrrole; Maleic acid n-ethylimide

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
128-53-0 n-Ethylmaleimide >99.0 204-892-4
Hazard Symbols: T+
Risk Phrases: 23/24 28 34 43

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Toxic by inhalation and in contact with skin. Very toxic if swallowed. Causes burns. May cause sensitization by skin contact.The toxicological properties of this material have not been fully investigated.Lachrymator (substance which increases the flow of tears).Corrosive.
Potential Health Effects
Eye:
Causes eye burns. Lachrymator (substance which increases the flow of tears). May cause corneal edema and inflammation.
Skin:
Causes skin burns. Toxic in contact with skin. Skin contact may cause an allergic skin reaction (sensitization) in a small proportion of individuals.
Ingestion:
May be fatal if swallowed. May cause burns to the digestive tract.
May cause nausea and vomiting.
Inhalation:
Irritation may lead to chemical pneumonitis and pulmonary edema.
Toxic if inhaled. Causes respiratory tract irritation with possible burns.
Chronic:
Laboratory experiments have resulted in mutagenic effects.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed.
Skin:
Get medical aid immediately. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Discard contaminated clothing in a manner which limits further exposure.
Ingestion:
POISON material. If swallowed, get medical aid immediately. Only induce vomiting if directed to do so by medical personnel. Never give anything by mouth to an unconscious person.
Inhalation:
Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Will burn if involved in a fire.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Keep refrigerated. (Store below 4C/39F.) Store in a tightly closed container. Store in a dry area. Store protected from light. Store under nitrogen. Refrigeration has been recommended to prolong integrity of the product.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 128-53-0: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Crystalline powder
Color: white to light yellow
Odor: pungent odor - strong odor
pH: 5.1 (1g/l aq. sol.)
Vapor Pressure: Negligible.
Viscosity: Not available.
Boiling Point: 210 deg C
Freezing/Melting Point: 41-45 deg C
Autoignition Temperature: Not available.
Flash Point: 73 deg C ( 163.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water.
Specific Gravity/Density: Not available.
Molecular Formula: C6H7NO2
Molecular Weight: 125.0545

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. May discolor on exposure to light.
Conditions to Avoid:
High temperatures, light, dust generation, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 128-53-0: UX9625000 LD50/LC50:
CAS# 128-53-0: Dermal, guinea pig: LD50 = 500 mg/kg; Oral, mouse: LD50 = 25 mg/kg; Oral, rat: LD50 = 25 mg/kg.
Not available.
Carcinogenicity:
n-Ethylmaleimide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: TOXIC SOLID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2928
Packing Group: II
IMO
Shipping Name: TOXIC SOLID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2928
Packing Group: II
RID/ADR
Shipping Name: TOXIC SOLID, CORROSIVE, ORGANIC, N.O.S.
Hazard Class: 6.1
UN Number: 2928
Packing group: II

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+
Risk Phrases:
R 23/24 Toxic by inhalation and in contact with
skin.
R 28 Very toxic if swallowed.
R 34 Causes burns.
R 43 May cause sensitization by skin contact.
Safety Phrases:
S 1 Keep locked up.
S 24 Avoid contact with skin.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28 After contact with skin, wash immediately
with...
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 128-53-0: 3
Canada
CAS# 128-53-0 is listed on Canada's DSL List.
CAS# 128-53-0 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 128-53-0 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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