Azodicarbonamide (ADC), a versatile organic compound, stands as a cornerstone chemical blowing agent across numerous industries. Its unique properties enable the creation of foamed materials essential for insulation, cushioning, and lightweighting applications in plastics, rubber, and more. As a prominent manufacturer and supplier of ADC, NINGBO INNO PHARMCHEM CO.,LTD. provides an in-depth look at the properties that make ADC an indispensable industrial material and guides potential buyers on how to effectively source it.

Chemical Composition and Structure

Azodicarbonamide, with the chemical formula C₂H₄N₄O₂ and CAS Number 123-77-3, is characterized by its azo group (-N=N-) flanked by two carbamoyl groups (-CONH₂). This molecular structure is key to its thermal instability and its function as a blowing agent. It typically appears as a yellow to orange-red crystalline powder, insoluble in cold water but slightly soluble in hot water and soluble in dimethyl sulfoxide.

Thermal Decomposition: The Core Functionality

The primary utility of Azodicarbonamide stems from its thermal decomposition. When heated, ADC breaks down, releasing a significant volume of gases, primarily nitrogen (N₂), carbon monoxide (CO), and carbon dioxide (CO₂). A gram of pure ADC can yield approximately 220-245 mL of gas. This controlled release of gas within a polymer melt causes the material to expand, forming a cellular or foamed structure. The decomposition temperature of pure ADC is typically around 200-210°C, but this can be modified to lower temperatures (as low as 150°C) by incorporating activators or additives. This adjustability allows manufacturers to optimize the foaming process for different polymers and processing equipment.

Key Properties Relevant to Industrial Applications

  • Gas Yield: High gas evolution rate ensures efficient foaming with lower concentrations of the agent.
  • Decomposition Temperature: Adjustable to match specific polymer processing windows.
  • Non-Toxicity of Byproducts: The decomposition products are odorless and non-toxic, making ADC a preferred choice for safety-conscious applications.
  • Particle Size and Dispersibility: Uniform particle size and good dispersibility in polymer matrices are critical for creating fine, homogeneous foam structures.
  • Self-Extinguishing Nature: Unlike some other blowing agents, ADC residues do not contribute to flammability, and the agent itself is self-extinguishing when the heat source is removed.
  • Cost-Effectiveness: ADC remains one of the most economical blowing agents in the market, offering excellent value for its performance.

Sourcing High-Quality Azodicarbonamide

As a leading manufacturer and supplier, NINGBO INNO PHARMCHEM CO.,LTD. provides Azodicarbonamide that meets stringent quality standards. We offer reliable supply for bulk purchase orders, competitive pricing, and technical support to help you leverage ADC's properties effectively. Understanding these fundamental properties is the first step for any manufacturer looking to buy ADC and optimize their foaming processes. Contact us today to discuss your specific needs.