Description

Carboxynitroso Rubber is a specialized synthetic elastomer characterized by the presence of both carboxylic and nitroso functional groups. This unique chemical structure imparts exceptional properties, making it a critical material for demanding industrial applications where standard rubbers fail. It is primarily sought after by manufacturers in the automotive, aerospace, and oil & gas sectors for its superior performance under extreme conditions. The compound is also identified by the CAS registry number 25067-94-1.

Application

• High-Performance Seals and Gaskets: Used in automotive and aerospace engines for components requiring excellent resistance to heat, fuels, and oils.
• Oil & Gas Downhole Equipment: Formulated into packers, blow-out preventers, and other seals that must withstand high pressure, sour gas (H2S), and aggressive drilling fluids.
• Industrial Hose and Belting: Serves as a key polymer in hoses for chemical transfer and in conveyor belts for abrasive or high-temperature material handling.
• Advanced Adhesives and Coatings: Provides enhanced chemical resistance and bonding strength in specialty adhesive formulations for metal-to-rubber bonding.
• Vibration Damping Components: Incorporated into mounts and bushings for heavy machinery due to its good dynamic properties and durability.
• Custom Compound Development: Acts as a base polymer for creating custom rubber compounds tailored to specific mechanical, thermal, or chemical resistance requirements.

Basic Information

Product Name	Carboxynitroso Rubber
CAS No.	25067-94-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Carboxylated Nitroso Rubber; Nitroso Rubber, Carboxylated; Poly(1-nitroso-1,3-butadiene-co-acrylic acid); NBR-COOH (Carboxylated Nitrile Rubber variant); Acrylonitrile-Butadiene-Nitroso Rubber, Carboxylated; Reactive Nitroso Elastomer
EINECS	Contact for details

Quality Control

Our Carboxynitroso Rubber is produced under a stringent quality management system. Each batch undergoes rigorous testing for key parameters such as polymer composition, functional group content, viscosity, and mechanical properties to ensure consistency and performance. Certificates of Analysis (COA) detailing the specific test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. As a polymeric material, prolonged exposure to elevated temperatures should be avoided to prevent premature aging or cross-linking.

Specification

Item	Specification
Appearance	Pale yellow to amber solid (chips or bale)
Mooney Viscosity (ML 1+4 @ 100°C)	30 - 80
Carboxyl Group Content	0.5 - 5.0 meq/100g polymer
Nitroso Group Content	Contact for details
Ash Content	< 1.0 %
Volatile Matter	< 1.0 %

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