AZODICARBONAMIDE

PRODUCT IDENTIFICATION

CAS NO. 123-77-3

AZOBISFORMAMIDE

EINECS NO. 204-650-8
FORMULA NH2CON=NCONH2
MOL WT. 116.08

H.S. CODE

2927.00.1500

UN NO.

3242

TOXICITY

Oral ra LD50: 6400 mg/kg

SYNONYMS 1,1'-Azobisformamide; AC Blowing Agent; ADC;
C,C'-Azodi(formamide); ADA; Azobiscarbonamide; Azobiscarboxamide; Azodicarbodiamide; Azodicarboxamide; Azodiformamide; Azodicarbonamide; Diazenedicarboxamide; Diazenedicarbonic; C,C'-Azodi(formamid) (German); C,C'-Azodi(formamida) (Spanish); C,C'-Azodi(formamide) (French); Azobisformamide; 1,2-Diazenedicarboxamide; Other RN.:  183256-78-2, 52737-71-0, 62494-62-6, 62494-61-5, 62494-85-3, 65098-86-4, 65098-87-5, 72514-45-5, 73247-42-4, 73905-77-8, 81774-20-1, 89073-35-8, 97707-96-5, 218433-14-8, 221272-72-6
SMILES Hydrazine and Alkali Cyanate or Urea

SMILES

C(=O)(/N=N/C(=O)N)N

CLASSIFICATION

Blowing agent

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE Yellow to orange-red crystalline powder

MELTING POINT

225 C
BOILING POINT Decomposes
SPECIFIC GRAVITY 1.65

SOLUBILITY IN WATER

Soluble in hot water
pH  
VAPOR DENSITY  
AUTOIGNITION

 

REFRACTIVE INDEX

 

NFPA RATINGS  
FLASH POINT

225 C

STABILITY Stable but decomposes if heated

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking

Material Safety Data Sheet

Google Scholar Search

GENERAL DESCRIPTION:
Azo is the prefix for the group -N=N- or a combining form of azote which share the core azobenzene structure. Azo compounds have a general molecular formula of R-N=N-R', where R is aryl, heteroaryl, -CH=C(OH)- or aliphatic. The extended delocalization of electrons in the benzene and azo groups forms a conjugated system absorbing visible frequencies of light. Aromatic groups provide characteristic colors of red, orange, and yellow. This is the fundamental structure of azo dyes. Aliphatic azo compounds are unstable and the loss of nitrogen gas occurs by the simultaneous cleavage of carbon-nitrogen bonds, resulting in carbon-centered radicals. some aliphatic azo compounds are utilized as radical initiators. Azobisisobutyronitrile is a typical initiator of free radical reactions for the production of polymer (polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol and synthetic fibers) and as a blowing agent for plastics and elastomers.

Azodicarbonamide, releasing nitrogen gas, is a general foaming agent for rubbers and plastics such as PVC, EVA, polyolefin, polystyrene products. (Its temperature of decomposition is 205 - 215 C). Food grade of Azodicarbonamide is used as a flour aging and bleaching ingredient in cereal flours and dough conditioner in baking bread. It reacts with moist flour as an oxidizing agent. Azodicarbonamide acts as a hydrogen acceptor, converting to biurea. The United States allows azodicarbonamide to be added to flour at levels up to 45 ppm. Use of azodicarbonamide as a food additive is banned in Australia and in Europe. The pharma grade of Azodicarbonamide molecule is used as an Anti-HIV agent, Anti-Infective Agent, Anti-Retroviral Agent, Antiviral Agent, Immunologic Factor, Immunosuppressive Agent .


SALES SPECIFICATION

APPEARANCE

light yellow powder

ASSAY

97.0% min

ASH

0.2% max

DECOMPOSITION TEMP

200 C min

GAS YIELD

210 min (ml/g)

HEAT LOSS

0.3% max

PARTICLE SIZE

12 - 14 um or 7 - 9um or 6 - 8um

WATER

0.25% max

TRANSPORTATION
PACKING 25kgs in Bag, 40kgs in iron drum
HAZARD CLASS 4.1 (Packing group : III)
UN NO. 3242
DESCRIPTION OF BLOWING AGENT

Blowing agents, also called foaming agents, can be classified as Physical and Chemical Blowing Agents. Physical blowing agents are not under chemical changes during processing. Physical blowing agents are in forms of liquid or compressed gas which will transfer state into gases or low boiling liquid during processing causing resins into cellular structure. Chemical Blowing Agents are mainly solid form of hydrazine derivatives include Azodicarbonamide; p,p'-Oxybis(benzenesulfonyl hydrazide); 5-Phenyltetrazole; p-Toluene sulfonyl semicarbazide; Trihydrazine Triazine; They commonly release gases such as nitrogen, carbon dioxide, carbon monoxide or ammonia. But ammonia is not desirable as it effects on degrade of resins. There are nonazo blowing agents releasing carbon dioxide such as sodium borohydride.

Blowing Agent Class

  • Azo Compounds
    • Azodicarbonamide (CAS RN: 123-77-3)
  • Hydrazine Compounds
    • p-Toluenesulfonylhydrazide (CAS RN: 1576-35-8)
    • p,p'-Oxybis (Benzenesulfonylhydrazide) (CAS RN: 80-51-3)
    • Benzenesulfonyl Hydrazide (CAS RN: 80-17-1)
    • p-Toluenesulfonyl acetone hydrazone
  • Carbazides
    • p-Toluenesulfonylsemicarbazide (CAS RN: 10396-10-18)
    • p,p'-Oxybis (Benzenesulfonylsemicarbazide)
  • Tetrazoles
    • 5-Phenyltetrazole (CAS RN: 18039-42-4)
  • Nitroso Compounds
    • N,NĄŻ-Dinitroso-pentamethylenetetramine (CAS RN: 101-25-7)
  • Carbonates
    • Sodium Bicarbonate (CAS RN: 144-55-8)


PRICE INFORMATION