Azodicarbonamide

  • Diazenedicarboxamine
  • 1,1’-Azobisformamide
  • Azodicarboxamine
  • Azobiscarbonamide
  • C,C'-azodi(Formamide)
Formula
(NCONH2)2
Structure
Description
A yellow to orange powder.
Uses
Blowing agent for synthetic & natural rubber & ethylene-vinyl acetate copolymers, for poly(vinylchloride) compound & thermoplastic urethane elastomers, for polyolefin resins, acrylic & acetal polymers & polyethylene, for acrylonitrile-butadiene-styrene resins & high impact polystyrene sheeting.

Registry Numbers and Inventories.
CAS
123-77-3
EC (EINECS/ELINCS)
204-650-8
EC Index Number
611-028-00-3
EC Class
Sensitising; Risk of explosion if heated under confinement
R 42 44
S 22 24 37
RTECS
LQ1040000
RTECS class
Mutagen
UN (DOT)
3242
Merck
13,921
Beilstein/Gmelin
1758709
Beilstein Reference
3-03-00-00234
Swiss Giftliste 1
G-3624
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2H4N4O2
Formula mass
116.08
Melting point, °C
225
Boiling point, °C
355
Decomposition point, °C
>195
Vapor pressure, mmHg
7
Critical temperature
397
Critical pressure
48.1
Density
1.65 g/cm3 (20 C)
Solubility in water
Soluble in hot water.
Partition coefficient, pKow
-0.81

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. 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
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.
Disposal code
3
Stability
Stable under normal shipping and handling conditions. However, may decompose if heated.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, ammonia and/or derivatives, nitrogen.

Fire.
Flash Point,°C
>200
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. May be ignited by heat, sparks, and flame. Vapors or dust may form explosive mixture with air. May burn violently. Decomposition may be self-accelerated and produce large amounts of gas. Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out. For large fires, flood fire area with water from a distance.
Fire potential
Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact.
Hazards
Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact. May be ignited by heat, sparks or flames. Some may decompose explosively when heated or involved in a fire. May burn violently. Decomposition may be self-accelerating and produce large amounts of gases. Vapors or dust may form explosive mixtures with air.
Combustion products
May produce irritating, toxic and/or corrosive gases.
Health
1
 
Flammability
1
 
 
Reactivity
1
 

Health.
Poison_Class
-
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation.
   Eyes
Dust may cause mechanical 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
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
3242
Response guide
Hazard class
4.1
Packing Group
II
 
HS Code
2927 00 00
 
Std. Transport #
4917154