1. Product Overview, Functions & Uses

4,4'-Oxybis(benzenesulfonyl hydrazide) is a high-efficiency chemical blowing agent widely utilized in polymer foaming applications. Renowned for its stable decomposition profile and clean gas release, this product delivers consistent cell structure, excellent dispersion, and predictable performance across a variety of thermoplastic and elastomer systems. Its primary function is to generate nitrogen-based gases through controlled thermal decomposition, enabling lightweighting, cushioning, and insulation properties in finished materials. Beyond foam manufacturing, it can also serve as a nucleating agent, process aid, and specialty additive in formulations where controlled gas evolution enhances final product functionality.

Owing to its reliable performance under diverse processing conditions, this blowing agent is commonly applied in injection molding, extrusion foaming, calendaring, and compression molding. It offers particularly strong advantages in applications that demand uniform microcellular foam structures, reduced density, and improved mechanical properties in lightweight materials.

2. Key Product Features

Our 4,4'-Oxybis(benzenesulfonyl hydrazide) is formulated and manufactured to meet strict industrial quality standards, ensuring outstanding consistency and value for customers.

High purity and excellent chemical stability

A tightly controlled production process delivers a product with minimal impurities, enabling predictable decomposition behavior and minimizing yellowing or odor in finished materials.

Controlled decomposition temperature

Its relatively moderate decomposition range allows compatibility with a wide spectrum of polymers, including PVC, EVA, PE, PP, ABS, synthetic rubbers, and engineering plastics.

Fine powder with efficient dispersion

The optimized particle size enhances uniform distribution within polymers, promoting even cell formation for smoother surface finish and stable product quality.

Clean gas output and low residue

The decomposition of OBSH generates mainly nitrogen, resulting in fine and closed-cell foam structures while leaving minimal residue that could otherwise affect mechanical performance.

Compatible with synergistic additives

OBSH can be combined with activators, nucleating agents, and fillers to achieve tailored foam density and improved production efficiency.

3. Product Specifications

Standard specifications for our 4,4'-Oxybis(benzenesulfonyl hydrazide) include:

• Chemical Name: 4,4'-Oxybis(benzenesulfonyl hydrazide)

• CAS Number: 80-51-3

• Appearance: White to off-white fine crystalline powder

• Assay (Purity): ≥ 98%

• Moisture Content: ≤ 0.5%

• Particle Size: 20–40 μm (custom ranges available upon request)

• Decomposition Temperature: 150–160°C

• Gas Generation: Approximately 115–120 mL/g (mainly nitrogen)

• Packaging Options: 20 kg / 25 kg woven bags, kraft paper bags, or PE-lined cartons

• Shelf Life: 12 months (sealed, stored in cool and dry environment)

Each batch undergoes rigorous QC testing to ensure compliance with global standards.

4. Product Instructions & Recommended Use

To achieve optimal performance, we recommend the following guidelines:

Dosage

Typical usage levels range from 0.3%–2.0% depending on the base polymer, processing equipment, and desired foam density. Higher loadings may be used for ultra-lightweight or highly elastic foam structures.

Processing

• Owing to its moderate decomposition temperature, OBSH can be used in most thermoplastic extrusion, injection molding, and rubber vulcanization systems.

• Pre-mixing with resins via high-speed mixers or twin-screw extrusion is recommended for uniform dispersion.

• Use alongside appropriate activators (such as urea compounds or metal salts) when faster decomposition or larger cell structure is required.

• Avoid prolonged exposure to temperatures exceeding 80°C during premixing or storage to prevent premature activation.

Safety & Handling

• Keep sealed when not in use; store in a cool, dry, ventilated area.

• Avoid dust formation and contact with open flame.

• Use gloves, goggles, and protective clothing during handling.

• Refer to the product MSDS for detailed safety information.

5. Applicable Industries

4,4'-Oxybis(benzenesulfonyl hydrazide) serves a broad range of manufacturing sectors that rely on foamed, cushioned, lightweight, or impact-absorbing materials.

Major industry applications include:

• Footwear & Sporting Goods: EVA midsoles, insoles, protective padding

• Plastics Processing: PE/PP foam sheets, profiles, and extrusion products

• Rubber & Elastomer Goods: NBR, SBR, EPDM foams used in sealing and vibration-damping products

• Automotive: Interior trims, sound insulation, lightweight structural foam

• Construction Materials: Insulation boards, sealing gaskets, flooring materials

• Consumer & Packaging: Cushioning materials, protective packaging foams

• Electronics: Cable insulation, wire coverings, anti-vibration components

Its versatility and stable performance make it a preferred blowing agent across diverse production lines.

6. Target Customers

This product is ideal for companies seeking reliable, high-performance blowing agents for industrial manufacturing.

Our core customer segments include:

• Polymer compounders & masterbatch producers

• Footwear manufacturers and EVA foam producers

• Rubber product factories and elastomer processors

• Extrusion and injection molding companies

• Automotive parts suppliers

• Packaging and cushioning material manufacturers

• Technical foam and specialty materials developers

We support both high-volume industrial operations and specialty formulators requiring custom specifications or tailored performance adjustments.