Azodicarbonamide

CAS Number
123-77-3
EC Number
204-650-8
Abbreviation
ADCA

What is Azodicarbonamide?

Azodicarbonamide (CAS 123-77-3), also known as ADCA or Celogen AZ, is a chemical blowing agent and dough conditioner.

Where is Azodicarbonamide used?

  • Rubber and plastics: compounded into EVA, PVC and polyolefin formulations for foamed sheets, profiles and footwear soles
  • Bread and flour: flour maturing agent that strengthens gluten networks and improves machinability of high-output dough lines
  • Synthetic leather and textile coating: generates the foam layer in PVC-coated fabrics, controlling thickness and flexibility
  • Masterbatch producers incorporate ADCA into concentrate systems for pre-dispersed blowing agent solutions.

Good to know: Standard commercial grades include food-grade and technical/rubber grades differentiated by particle size and decomposition temperature range.

Commercial specifications

  • Food-grade and technical/rubber grades differentiated by particle size and decomposition temperature range
  • Activated grades with modified decomposition profiles for specific polymer processing windows

Other Names (Synonyms)

azo(bis)formamide|ADCA|Celogen AZ|1,2-Diazenedicarboxamide|Formamide, 1,1′-azobis-|ADC|E927a.

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What are the physical properties of Azodicarbonamide?

Melting Point 225 °C (decomp)
Boiling Point 217.08°C (rough estimate)
Density 1.65 g/cm³ @ Temp: 20 °C
Flash Point 225 °C
Appearance orange crystalline powder
Color Yellow to orange-red crystalline powder
Odor odorless
Form Solid
Water Solubility SOLUBLE IN HOT WATER
Vapor Pressure 0Pa at 25℃
Refractive Index 1.4164 (estimate)
pH 7 ( in H2O, neutral)
Log P -1.148 (est)

How is Azodicarbonamide classified and handled safely? Learn More

Danger
GHS08· Health Hazard GHS02· Flammable GHS07· Irritant

Hazard Statements

H228 Flammable solid
H317 May cause an allergic skin reaction
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
H402 Harmful to aquatic life
H412 Harmful to aquatic life with long lasting effects

Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Which trade and regulatory codes apply to Azodicarbonamide?

HS Code 29270000
UN Number 3242
ADR Class 4.1
Packing Group II
Storage Class 4.1A - Other explosive hazardous materials
WGK (Germany) 1
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