OBSH is an organic chemical blowing agent chemically identified as 4,4’-Oxybis(benzenesulfonylhydrazide), widely used in rubber and polymer foaming applications. It is suitable for natural and synthetic sponge rubber as well as cellular plastics such as EVA copolymers, LDPE, and PVC. OBSH decomposes within a processing temperature range of approximately 140–170°C, releasing nitrogen gas as the primary blowing medium.
The material is supplied as a white to off-white powder and is characterized by controlled gas evolution and low volatility under specified conditions. Due to its odorless and non-staining decomposition residue, OBSH is suitable for light-colored and electrically sensitive applications. It does not release ammonia during decomposition, making it applicable in cable insulation and related electrical components.
OBSH is used in both batch and continuous processing systems, including extrusion, molding, and press curing processes. Decomposition characteristics can be modified in specific formulations using suitable additives, depending on processing requirements. The product is supplied against official technical documentation and is intended for industrial and R&D use where controlled cellular structure formation is required.
| Parameter | Details |
| Appearance | White to off-white powder |
| Chemical Type | Organic chemical blowing agent |
| CAS No. | 80-51-3 |
| Decomposition Temperature | 153 ± 3°C |
| Gas Composition | Mainly Nitrogen |
| Gas Content | 120 ± 5 ml/g (at STP) |
| Volatility | 0.5% max |
| Ash Content | 0.5% max |
| pH | 7.0 ± 0.5 (4% aqueous suspension at 25°C) |
Disclaimer:
The above specifications are provided for reference purposes only. For precise and up-to-date technical details, please contact our marketing team.
Disclaimer:
Recommended dosage may vary based on formulation and processing conditions. Users should verify dosage before commercial use.
Store in a cool, dry place away from direct heat and incompatible chemicals. Keep containers tightly closed when not in use. Handle with appropriate industrial safety practices and refer to SDS for detailed handling guidance.
Disclaimer:
We are independent dealers and are not associated with the manufacturer. The information provided is compiled from official manufacturer datasheets and independent research. Users must evaluate product suitability and applicability before use.
Lab Line Enterprises supplies OBSH chemical blowing agent to industrial processors and R&D units across India. As an ISO 9001:2015 certified organization, Lab Line Enterprises supports rubber and polymer manufacturers with documented materials suitable for controlled foaming applications. OBSH is commonly used by processors in cities such as Mumbai, Pune, Ahmedabad, Chennai, Bengaluru, Delhi NCR, and Coimbatore for rubber, EVA, and PVC-based products. Small pack sizes such as 1 kg and 5 kg are made available for trials, laboratory evaluations, and formulation development. Supply is supported through established logistics networks to enable pan-India delivery.
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