Hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate

Hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate
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UV-2908

CAS 67845-93-6
  • Product Category UV Absorbers & Light Stabilizers
  • Molecular Formula C₃₁H₅₄O₃
  • Appearance White crystalline powder
  • Molecular Weight 475
  • Melting Point 59-64 °C
  • Weight Loss Temperature271 °C (50% weight loss)
Chemical Properties
  • Stability: Chemically stable at room temperature under normal conditions
  • Chemical Resistance: Resistant to acidic and alkaline conditions
  • Combustibility: Combustible; combustion or decomposition may produce carbon oxides
  • Incompatible Materials: Strong oxidizing agents
  • Performance: Provides effective UV absorption, anti-aging, and antioxidant performance
Key Applications
  • Polymer Materials: Improve UV-aging resistance in polyolefins, PVC, ABS, and rubber products
  • Plastic Products: Enhances weatherability in plastic films, pipes, and outdoor profiles
  • Coatings, Inks & Adhesives: Helps protect coatings, inks, and adhesive formulations from yellowing and degradation
  • Outdoor Industrial Products: Supports long-term aging resistance in outdoor plastic products and wire and cable insulation layers
Emergency Handling
  • Skin Contact: Remove contaminated clothing immediately. Wash skin thoroughly with plenty of water and soap for at least 15 minutes. Seek medical attention if irritation persists.
  • Eye Contact: Rinse immediately with plenty of water for at least 15 minutes while holding the eyelids open. Seek medical attention promptly.
  • Inhalation: Move the affected person to fresh air and keep the airway clear. Administer oxygen if breathing is difficult. If breathing stops, provide artificial respiration and seek medical help immediately.
  • Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical attention immediately.
  • Fire: Use dry chemical powder or carbon dioxide for extinguishing. Do not use a direct water jet, as it may cause splashing.
Packaging & Storage
  • Packaging: Sealed packaging with an inner plastic bag (20 kg per package).
  • Storage Conditions: Store at room temperature in a cool, dry, and well-ventilated warehouse. Keep away from heat sources and open flames.
  • Storage Requirements
    1. Store separately from strong oxidizing agents, strong alkalis, and food products.
    2. Keep containers tightly closed to protect the product from moisture and light.
    3. Stack packages at least 10 cm above the ground and keep them away from heating systems and pipelines.
Handling Precautions
  • Ventilation & Dust Control: Handle in a fume hood or with adequate exhaust ventilation to prevent dust generation and inhalation.
  • Fire Prevention: Keep open flames, sparks, and smoking away from the production area. Use explosion-proof electrical equipment where required.
  • Incompatible Materials: Do not store or mix with strong oxidizing agents or strong alkalis.
  • Spill & Waste Disposal: Collect small spills with dry sand or inert absorbent materials. Dispose of waste through a licensed hazardous waste contractor. Do not discharge directly into the environment.
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