ADC blowing agent

English Name: Azodicarbonamide 

Molecular Formula: C2H4O2N4

Molecular Weight: 116

Appearance: Light yellow powder

Purity: Premium grade

Package: 25 kg/bag

Physical Properties

1. Gas generation: ≥215 ml/g;

2. Residue on sieve (38 μm mesh): ≤0.1%;

3. Average particle size: ≤12 (Dn) μm;

4. Decomposition temperature: 200-210°C;

5. Heating loss: ≤0.15%;

6. Ash content: ≤0.1%;

7. Purity (ADC): ≥97.0%

Storage

Store in a ventilated, cool, and dry place. Usage

Production Method

Urea oxidation method. Using urea, chlorine, and caustic soda as starting materials, hydrazine hydrate is first prepared. The obtained hydrazine hydrate reacts with urea under the action of sulfuric acid to form biurea, which is then oxidized with chlorine to produce ADC foaming agent. The product is obtained after washing, centrifugation, and drying.

Producing 1 ton of this product requires 1.9–2.2 tons of urea (N≥46%), 2 tons of sulfuric acid (98%), 2.0–2.3 tons of caustic soda (100% equivalent), 0.01 tons of sodium bromide, 1.7–1.9 tons of liquid chlorine (99.5%), and 0.1–0.11 tons of potassium permanganate.