In the realm of polymer processing, chemical blowing agents are indispensable for creating cellular structures that impart unique properties to materials. Azodicarbonamide, identified by its CAS number 123-77-3 and often abbreviated as AC or ADC, stands as a preeminent example of such a chemical. This article provides a comprehensive overview of Azodicarbonamide, covering its chemical characteristics, diverse industrial applications, and essential advice for procurement professionals looking to buy Azodicarbonamide.

The Chemistry and Properties of Azodicarbonamide

Azodicarbonamide (C₂H₄N₄O₂) is an organic compound characterized by its bright yellow crystalline powder appearance. Its primary function as a blowing agent relies on its thermal decomposition. When heated to its decomposition temperature, typically between 200-210°C in air, it breaks down to release a significant volume of gases, including nitrogen, carbon monoxide, carbon dioxide, and ammonia. This gas evolution is what creates the bubbles within a polymer melt, forming a foamed structure.

Key properties that make ADC a preferred choice include:

  • High Gas Yield: It exhibits a high gas evolution rate, often around 210-245 mL/g, which means efficient foaming with relatively low concentrations.
  • Fine Cell Structure: ADC is known to produce a fine and uniform cell structure, leading to improved mechanical properties and surface finish in foamed products.
  • Good Thermal Stability: Its decomposition temperature is suitable for processing many common plastics and rubbers.
  • Non-Staining Residues: The decomposition by-products are generally odorless, non-toxic, and non-staining, which is advantageous for product quality and handling.

Industrial Applications of Azodicarbonamide

The versatility of Azodicarbonamide allows it to be used across a wide spectrum of industries and materials:

  • Plastics Foaming: It is extensively used in foaming PVC, PE, PP, PS, and ABS to produce products like foam boards, pipes, profiles, packaging materials, and insulation.
  • Rubber Foaming: ADC is also a key ingredient in the foaming of synthetic rubbers such as EVA, NBR, and SBR. This is particularly relevant for applications like slipper shoe soles, automotive seals, and vibration dampening components.
  • Other Uses: While industrial foaming is its primary application, Azodicarbonamide has historically been used as a flour treatment agent in the food industry, though its use is now restricted in some regions due to concerns about its decomposition products.

Sourcing Azodicarbonamide: Partnering with Reliable Suppliers

For businesses seeking to buy Azodicarbonamide, establishing a relationship with a dependable manufacturer and supplier is crucial. When evaluating options, consider the following:

  • Product Quality and Purity: Ensure the supplier provides ADC with a purity of 98% or higher. Requesting technical data sheets (TDS) and samples for testing is recommended.
  • Manufacturing Experience: Opt for manufacturers with a strong background in producing chemical blowing agents, ensuring consistent quality and production capacity.
  • Competitive Pricing: Research the market to find competitive Azodicarbonamide prices. Direct manufacturers often offer better value.
  • Supply Chain and Logistics: Confirm the supplier's ability to provide timely and reliable delivery, whether through express shipping or bulk freight.
  • Technical Support: A good supplier will offer technical assistance to help you select the correct grade of ADC for your specific plastic or rubber foaming application.

As a leading AC blowing agent supplier, we are committed to providing high-quality Azodicarbonamide and expert support to our clients. Whether you are looking for a blowing agent for PVC foaming, rubber processing, or other industrial applications, understanding the specifications and sourcing from trusted partners will ensure the success of your products.

In conclusion, Azodicarbonamide (CAS 123-77-3) remains a vital chemical blowing agent, offering exceptional performance and versatility for a wide array of plastic and rubber foaming applications. By carefully considering product quality, supplier reliability, and application-specific needs, manufacturers can effectively leverage this compound to achieve superior material properties and operational efficiency.