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Bayprene
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Bayprene is a high-quality, synthetic rubber polymer belonging to the class of nitrile butadiene rubbers (NBR). It is widely used for its excellent resistance to oils, fuels, chemicals, and abrasion, making it ideal for sealing, gasketing, hoses, and industrial applications where durability and chemical resistance are required. Bayprene exhibits good mechanical properties, high tensile strength, and resistance to swelling and degradation, especially in petroleum-based environments. It is commonly supplied as solid rubber sheets, molded parts, or raw polymer for compounding.
Description
Primary UsesÂ
- Sealing and Gasketing:
Used extensively in the manufacturing of oil seals, gaskets, and O-rings in automotive, aerospace, and industrial machinery due to its resistance to petroleum oils and fuels. - Hoses and Tubing:
Ideal material for fuel and oil handling hoses, hydraulic hoses, and flexible tubing in harsh chemical environments. - Automotive Industry:
Applied in fuel system components, brake system seals, and vibration dampening parts due to its durability and chemical resistance. - Industrial Applications:
Used for conveyor belts, diaphragms, and molded parts exposed to oils and solvents in manufacturing plants and refineries. - Adhesives and Coatings:
Employed in specialty adhesives and protective coatings where resistance to fuels and oils is necessary.
Secondary UsesÂ
- Protective Gloves:
Used in nitrile gloves production, offering resistance to punctures and chemicals in medical and industrial settings. - Sporting Goods:
Occasionally incorporated in synthetic rubber blends for grips and protective equipment. - Sealants:
Used as a component in sealant formulations for marine and construction industries requiring oil resistance.
Electrical Insulation:
Limited use as insulating material due to good dielectric properties and chemical stability.
PRODUCT KEY FEATURES
- Basic Identification Attributes
- Chemical Name (IUPAC): Acrylonitrile butadiene copolymer
- Common/Trade Name: Bayprene
- CAS Number: 25038-81-7 (typical for nitrile rubber)
- HS Code: 4002.49.00 (Rubber and articles thereof)
- Molecular Formula: (C₄H₅N)_x·(C₄H₆)_y (copolymer composition varies)
- Synonyms: Nitrile Butadiene Rubber (NBR), Buna-N
- Physical & Chemical Properties
- Physical State: Solid rubber (sheets, blocks, or molded parts)
- Color & Odor: Typically black or dark brown, characteristic rubber odor
- Melting Point: Does not have a sharp melting point; softens over range 160-190°C
- Density: ~1.0 - 1.2 g/cm³
- Solubility: Insoluble in water; soluble in aromatic and chlorinated hydrocarbons
- Mechanical Properties: Tensile strength ~15-25 MPa, elongation at break 300-600%
- Resistance: Excellent resistance to oils, fuels, and many chemicals; moderate resistance to heat and ozone
- Flammability: Flammable, but self-extinguishing when removed from flame
- Safety & Hazard Attributes
- Hazard Class (GHS): Not classified as hazardous in solid form; dust/fume inhalation hazardous
- NFPA Ratings: Health 1, Flammability 2, Reactivity 0
- Exposure Limits: No specific limits, but dust may irritate respiratory system
- Reactivity: Stable under normal conditions; avoid strong oxidizers and high temperatures
- Incompatibilities: Avoid exposure to strong acids, bases, and oxidizing agents
- Storage & Handling Attributes
- Storage Conditions: Store in cool, dry place away from heat, flame, and sunlight
- Container Type: Rolls, sheets, or blocks wrapped in polyethylene or other moisture-proof packaging
- Shelf Life: Typically 1-3 years if stored properly
- Special Handling: Use gloves to avoid skin irritation; minimize dust generation when cutting or grinding
- Regulatory & Compliance Attributes
- Regulatory Status: Complies with international standards for synthetic rubbers
- Transportation: Not classified as hazardous for transport
- Waste Disposal: Dispose in accordance with local environmental regulations; avoid incineration without proper controls
- Environmental & Health Impact
- Ecotoxicity: Low direct toxicity; synthetic polymer persistence in environment
- Persistence: Not biodegradable; stable polymeric material
- Carcinogenicity/Mutagenicity: No known carcinogenic or mutagenic effects
- Biodegradability: Non-biodegradable
SAFETY HANDLING PRECAUTIONS
-
Safety Handling Precautions
- PPE: Wear gloves, protective clothing, and eye protection when handling rubber sheets or powders.
- Dust Control: Avoid inhalation of dust when cutting or grinding; use local exhaust ventilation or respirators if necessary.
- Fire Safety: Keep away from ignition sources; have suitable fire extinguishers (foam, COâ‚‚) nearby.
- Handling: Use mechanical aids for heavy rolls or blocks; avoid prolonged skin contact to reduce irritation risk.
- Storage: Store away from strong oxidizers and direct sunlight to prevent degradation.
First Aid Measures
- Inhalation: Remove to fresh air if dust inhaled; seek medical attention if respiratory irritation persists.
- Skin Contact: Wash with soap and water; seek medical advice if irritation occurs.
- Eye Contact: Rinse with plenty of water for at least 15 minutes; get medical help if irritation continues.
- Ingestion: Not expected; rinse mouth and seek medical advice if swallowed.
Firefighting Measures
- Fire Hazards: Flammable solid; produces toxic fumes including carbon monoxide and nitrogen oxides on burning.
- Extinguishing Media: Use foam, dry chemical powder, or COâ‚‚ extinguishers. Avoid water streams that may spread fire.
- Special Precautions: Firefighters should wear full protective gear and self-contained breathing apparatus (SCBA).
- Preventive Actions: Store away from heat sources and oxidizers to prevent fire risks.
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