N-Methylacetamide

  • Methylacetamide
  • Monomethylacetamide
  • n-Monomethylacetamide
Formula
CH3CONHCH3
Structure
Description
Needle-like crystals.

Registry Numbers and Inventories.
CAS
79-16-3
EC (EINECS/ELINCS)
201-182-6
EC Index Number
616-053-00-3
EC Class
Toxic for reproduction Category 2
RTECS
AC5960000
RTECS class
Mutagen; Reproductive Effector
UN (DOT)
2811
Beilstein/Gmelin
1071255
Beilstein Reference
4-04-00-00176
Swiss Giftliste 1
G-6879
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3H7NO
Formula mass
73.09
Melting point, °C
27 - 30
Boiling point, °C
204
Vapor pressure, mmHg
0.4 (40 C)
Density
1.043 g/cm3 (-23.15 C)
Solubility in water
Miscible
Viscosity
10.8 cp (0 C)
Refractive index
1.4301 (20 C)
Partition coefficient, pKow
-1.05
Heat of fusion
10.11 kJ/mol
Heat of vaporization
69.87 kJ/mol
Heat of combustion
-1862 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
108
Autoignition, °C
490
Upper exp. limit, %
18.1
Lower exp. limit, %
3.2
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
The toxicological properties of this material have not been investigated.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2811
Response guide
HS Code
2924 19 00