A yellow blowing agent usually refers to a yellow or pale-yellow chemical blowing agent used to create a cellular structure in plastics, rubber, synthetic leather, and related materials. In many industrial purchasing contexts, the product is azodicarbonamide, commonly abbreviated as ADC and identified by CAS No. 123-77-3, although color alone is not enough to confirm chemical identity. I recommend evaluating the active substance, decomposition temperature, gas yield, particle size, moisture, residual content, and application compatibility before placing a bulk order.
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For production, the most suitable grade depends on the polymer, processing temperature, required foam density, equipment, and regulatory requirements in the destination market. Typical supplier specifications may include a decomposition range of approximately 200–210°C, gas evolution of approximately 200–230 mL/g, particle sizes from about 5–20 µm, and moisture limits near or below 0.3%; these values are indicative rather than universal and must be verified against the current technical data sheet and certificate of analysis.
I prepared this guide for purchasing managers, compounders, product engineers, foam manufacturers, rubber processors, and distributors sourcing yellow blowing agents for commercial production. It is also useful for buyers comparing standard ADC powder with activated, fine-particle, or application-modified grades. The objective is to support a technically sound purchasing decision rather than to recommend one grade for every process.
Before requesting quotations, I suggest recording the polymer type, target density, processing temperature, dosage range, color requirement, product thickness, equipment type, monthly demand, packaging needs, and destination-country compliance requirements. These details allow a supplier to propose a realistic grade and reduce the risk of buying a product that decomposes too early or too late for the process.
A yellow blowing agent is a chemical additive that releases gas when heated, allowing a polymer or rubber compound to expand and form cells. The gas generated during decomposition creates lower-density products, while the surrounding resin or elastomer controls the final cell structure and mechanical properties. In the market, the term “yellow blowing agent” is commonly associated with ADC-based products, but buyers should confirm the chemical composition rather than relying on appearance.
ADC is an organic chemical blowing agent supplied in powder form and used in several polymer-processing applications. Public chemical references such as PubChem identify azodicarbonamide by CAS No. 123-77-3, while the European Chemicals Agency provides regulatory and substance information that buyers should review for their intended market. I recommend obtaining the supplier’s SDS, TDS, and batch-specific COA before technical approval.
Yellow blowing agents are used in some PVC foam and synthetic leather formulations to create a lighter, softer, or more flexible structure. The required grade depends on the plastisol or dry-blend system, gelation profile, coating thickness, and oven temperature. Excessive gas generation can cause pinholes, surface defects, or inconsistent thickness, so buyers should validate the product at the actual line speed and heating profile.
In rubber processing, chemical blowing agents may be used for sheets, mats, seals, soles, insulation parts, and other cellular products. The compound must balance blowing behavior with vulcanization, because gas release and crosslinking need to occur within a suitable processing window. I recommend evaluating scorch safety, cure compatibility, compression set, cell uniformity, and odor in addition to expansion ratio.
ADC-based grades may also be considered for selected PE, EVA, and thermoplastic formulations. However, the processing temperature and melt strength of each polymer differ, so a standard grade may require an activator, particle-size adjustment, or a different blowing-agent system. A small laboratory trial followed by a pilot run is more reliable than selecting a grade only from a catalog description.
Potential uses include lightweight profiles, foam boards, cable-related materials, packaging components, footwear materials, and specialty elastomer products. The suitability of the blowing agent depends on the finished product’s density, surface appearance, odor limits, flame requirements, and mechanical specifications. I advise buyers to define the finished-product test criteria before comparing suppliers.
| Grade or format | Typical purchasing focus | Important verification points |
|---|---|---|
| Standard ADC powder | General-purpose foam processing | Purity, decomposition temperature, gas yield, moisture, and residue |
| Fine-particle ADC | Improved dispersion and finer cell control | Particle-size distribution, agglomeration, dust handling, and surface quality |
| Activated ADC | Lower or modified decomposition temperature | Activation chemistry, thermal profile, compatibility, and residuals |
| Masterbatch or pre-dispersed format | More convenient dosing and dispersion | Carrier resin, active concentration, storage stability, and dosing accuracy |
Color may vary from pale yellow to deeper yellow depending on purity, particle size, additives, and manufacturing conditions. It should be treated as an appearance indicator rather than a complete quality specification. For critical applications, I would request a retained sample, a batch COA, and a comparison between the sample and the supplier’s reference standard.
The following specifications are commonly relevant when I evaluate a yellow blowing agent for B2B procurement. The exact acceptance limits should be agreed in writing because values differ by grade, manufacturer, and application.
For chemical hazard classification, I recommend reviewing the current SDS and the regulatory database applicable to the importing country. The European Chemicals Agency and the United States National Library of Medicine’s PubChem are useful reference points for substance identity and hazard information, but they do not replace a supplier’s current SDS or local compliance review.
First, I identify the polymer melting or gelation range, oven temperature, residence time, pressure, and line speed. The blowing agent should generate gas within a useful part of this window, rather than simply having the highest gas yield. A mismatch can produce premature expansion, incomplete decomposition, poor surface quality, or unstable product dimensions.
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Next, I define target density, thickness, cell size, hardness, tensile strength, compression set, color, odor, and surface appearance. For example, a foam sheet may prioritize uniform density and surface smoothness, while a rubber mat may prioritize resilience and compression performance. The same yellow blowing agent grade may therefore perform differently in two products.
Indicative formulation discussions may involve dosage levels such as 0.5–3.0 parts per hundred resin or rubber, but this is not a universal recommendation. Dosage depends on active content, gas yield, compound rheology, target density, and equipment. I would begin with a controlled trial matrix rather than changing dosage, activator, and processing temperature at the same time.
Fine particles can support better dispersion, but they may also increase dust-control requirements and handling sensitivity. I recommend checking dispersion under microscopy where appropriate, measuring density in grams per cubic centimeter, and inspecting cell uniformity across the product thickness. A production trial should also record scrap rate, dimensional stability, odor, and line-cleaning requirements.
Before commercial approval, I request the TDS, SDS, COA, packing specification, lot number format, shelf-life statement, and applicable regulatory declarations. If the product is exported, I also confirm HS-code support, labeling requirements, transport classification, and documentation for the destination market. Shitong can organize technical information around the buyer’s process requirements, but the buyer remains responsible for final product and regulatory approval.
Yellow blowing-agent pricing can change with raw-material costs, active content, particle-size control, activation technology, packaging, order volume, and destination logistics. I do not recommend comparing suppliers on price per kilogram alone because a lower-priced grade may require higher dosage or create more production waste. A better comparison is estimated cost per finished product unit after dosage, yield, scrap, and freight are considered.
MOQ and lead time vary by standard grade, customized grade, packaging format, and production schedule. Buyers should request both a sample quantity and a commercial MOQ, because a laboratory sample may not represent the minimum order available for regular supply. I also suggest confirming whether the quoted lead time is based on ready stock, production after order confirmation, or export-document completion.
A reliable supplier should be able to explain the product’s chemical identity, specification limits, test methods, packaging, storage conditions, and batch-control process. I also look for consistency between the TDS, SDS, COA, sample label, and commercial quotation. If the documents use different product names or specification units, I ask for clarification before approving the material.
One common mistake is assuming that a yellow color proves the material is ADC or that two products with the same appearance are interchangeable. Another is selecting the highest gas-yield grade without considering polymer melt strength, cure timing, or surface requirements. A third is approving a material from a single laboratory test without confirming performance at production speed and full product thickness.
Buyers should also avoid accepting vague terms such as “high purity” or “fine particle” without numerical limits and test methods. If the application is sensitive to odor, residue, electrical performance, food-contact status, or worker exposure, these requirements should be included in the initial inquiry. The supplier’s documents should support the decision, but they should not replace the buyer’s own validation program.
As a B2B supplier, I understand that buyers need more than a product name and a price. Shitong can help organize yellow blowing-agent inquiries around application, polymer type, target density, processing temperature, dosage, packaging, and delivery requirements. We can also provide the available technical documents and discuss whether a standard, fine-particle, activated, or pre-dispersed format is more appropriate for evaluation.
For a quotation request, please prepare the intended application, resin or rubber system, approximate monthly quantity, target specification, destination country, packaging preference, and required delivery schedule. If you already have a competing TDS or COA, sharing the key parameters can make the comparison more precise. Final suitability should be confirmed through the buyer’s laboratory and production trials.
The best yellow blowing agent is not necessarily the product with the lowest price or the highest gas-yield figure. I recommend defining the process window and finished-product targets first, then comparing documented grades through a controlled sample trial. Confirm the chemical identity, thermal behavior, gas yield, particle size, moisture, regulatory documents, MOQ, lead time, and repeat-order capability before commercial approval.
For the next step, send Shitong your application, polymer or rubber type, target density, processing temperature, expected dosage, monthly demand, and destination market. We can use this information to prepare a practical supply proposal and identify the technical documents required for your evaluation.
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