Pharmaceutical Materials

CAS Number: 80-51-3

Molecular Formula: C12H14N4O5S2

Molecular Weight: 358.39

Appearance: White odorless crystalline powder

Melting Point: 160-161°C

Usage: Mainly used as a foaming agent in the production of elastomers and thermoplastic products.

4,4′-Oxobis(benzenesulfonyl)hydrazide, with the CAS Number 80-51-3, is an organic compound known for its versatile applications primarily as a foaming agent in the rubber and plastics industry. Also referred to as OBSH or di-(benzenesulfonyl hydrazide) ether, it exhibits a white crystalline powder appearance. This compound is micro-soluble in hot water and ethanol but insoluble in cold water and various organic solvents. Its primary use lies in creating fine and uniform pore structures in products such as polyethylene foam, PVC, polypropylene, and ABS resin, making it indispensable in manufacturing processes for wallpaper, carpets, communication cables, artificial leather, and packaging materials.

Property	Value
CAS Number	80-51-3
Physical Properties	–
Molecular Formula	C12H14N4O5S2
Molecular Weight	358.396 g/mol
Appearance	White crystalline powder
Melting Point	160-161 °C
Density	1.52 g/cm³
Chemical Properties	–
Solubility	Micro-soluble in hot water and ethanol; insoluble in cold water and various organic solvents
Chemical Stability	Stable under normal conditions
Hazard Class	Xi (Irritant)
Risk Codes	R11; R44
Safety Statements	S26; S37/39

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