Dimethylcyanamide

  • Cyanodimethylamine
  • Dimethylaminocarbonitrile
  • N-Cyano-N-methylmethanamine
Formula
C3H6N2
Structure
Description
Clear liquid.
Uses
Chemical intermediate, solvent.

Registry Numbers and Inventories.
CAS
1467-79-4
EC (EINECS/ELINCS)
215-991-7
RTECS
GS6475000
RTECS class
Other
UN (DOT)
1992
Beilstein/Gmelin
506093
Beilstein Reference
4-04-00-00226
Swiss Giftliste 1
G-8515
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C3H6N2
Formula mass
70.09
Melting point, °C
-41
Boiling point, °C
164
Vapor pressure, mmHg
2 (25 C)
Vapor density (air=1)
2.55
Density
0.9405 g/cm3 (20 C)
Solubility in water
Very soluble
Refractive index
1.4089 (19.1 C)
pKa/pKb
11.04 (pKb)
Partition coefficient, pKow
-0.15
Heat of vaporization
40.0 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide.

Fire.
Flash Point,°C
58
Autoignition, °C
460
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Containers may explode when heated. Extinguishing media: Use water spray to cool fire-exposed containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
This chemical is combustible.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
4
 
Flammability
2
 
 
Reactivity
1
 

Health.
Poison_Class
2
Exposure effects
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion.
   Ingestion
Harmful if swallowed. Ingestion may produce ataxia, weakness, gasping respirations and unconsciousness.
   Inhalation
Harmful if inhaled. May cause respiratory tract irritation. May cause effects similar to those described for ingestion.
   Skin
May cause skin irritation. Substance is rapidly absorbed through the skin. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

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
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately 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
1992
Response guide
Hazard class
3
Packing Group
I; II; III