Description

4,4'-Oxybis(Benzenesulfonyl Hydrazide) is a high-purity chemical blowing agent widely used in polymer processing. This compound matters for its ability to generate nitrogen gas upon decomposition, creating a uniform, fine-celled structure in various polymeric matrices. Industries such as plastics, rubber, and specialty foam manufacturing rely on it for producing lightweight, high-quality finished products with excellent dimensional stability.

Application

• Primary blowing agent for the production of expanded PVC, polyethylene, polypropylene, and EVA foams.
• Used in the manufacture of sponge rubber and microcellular elastomers for footwear and automotive seals.
• Essential for creating lightweight composites in the construction and insulation materials sector.
• Employed in wire and cable insulation to improve physical and electrical properties.
• Facilitates the production of synthetic leather and other textured polymeric sheets.
• Acts as a nitrogen source in specific specialty chemical synthesis applications.

Basic Information

Product Name	4,4'-Oxybis(Benzenesulfonyl Hydrazide)
CAS No.	80-51-3
Molecular Formula	C12H14N4O5S2
Molecular Weight	358.39 g/mol
Synonyms	Oxybis(benzenesulfonyl hydrazide); 4,4'-Oxybis(benzenesulfonhydrazide); p,p'-Oxybis(benzenesulfonyl hydrazide); OBSH; 1,1'-(Oxybis(4,1-phenylene))bis(sulfonylhydrazine); NSC 403079; Bis(4-(hydrazinosulfonyl)phenyl) ether; Blowing Agent OBSH
EINECS	201-286-1

Quality Control

Our 4,4'-Oxybis(Benzenesulfonyl Hydrazide) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including assay, decomposition temperature, and residue analysis, to ensure it meets precise industry specifications. A Certificate of Analysis (COA) documenting purity, physical properties, and performance characteristics is available for every shipment to guarantee consistency and reliability for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Decomposition Temperature	150 - 165 °C
Gas Yield	120 - 135 mL/g
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %
Particle Size (Typical)	Passes through 100 mesh

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.