As a procurement manager, your role is pivotal in ensuring the quality and cost-effectiveness of raw materials that directly impact product performance. When it comes to protecting polymers from UV degradation, UV Absorber 234 (CAS 70321-86-7) is a highly sought-after solution. This article provides essential guidance for procurement professionals looking to buy this critical additive from a reputable supplier.

Understanding the Need: Why UV Absorber 234?
Polymers are susceptible to photodegradation when exposed to ultraviolet light. This leads to a decline in their physical properties, discoloration, and reduced aesthetic appeal. UV Absorber 234, a high molecular weight hydroxyphenyl benzotriazole, offers superior protection by efficiently absorbing harmful UV radiation and dissipating it as heat. Its key advantages, making it attractive for purchase, include:

  • High UV Absorption: Effectively blocks UV radiation in the critical 300-400nm range.
  • Low Volatility: Ideal for high-temperature processing, preventing loss during manufacturing.
  • Excellent Thermal Stability: Withstands processing conditions without degrading.
  • Broad Compatibility: Works well with various polymers like PC, PET, PA, and polyolefins.
  • Minimal Color Contribution: Preserves the visual integrity of the final product.

Key Specifications to Verify When Buying
When evaluating suppliers and placing an order for UV Absorber 234, pay close attention to these critical specifications:

  • Purity: Look for a minimum purity of 99% (HPLC), ensuring the effectiveness and consistency of the product.
  • Appearance: Typically a light yellow powder.
  • Melting Point: Generally in the range of 139-143°C, indicating its thermal properties.
  • Volatility: Should be very low, typically specified as less than 0.5% or 0.3%.
  • Solubility: Check its solubility in common organic solvents to ensure ease of incorporation.
  • CAS Number: Confirm it is 70321-86-7.

Sourcing Strategy: Partnering with a Reliable Manufacturer in China
As a procurement manager, securing a stable and cost-effective supply chain is paramount. Partnering with a direct manufacturer in China offers significant advantages:

  • Competitive Pricing: Direct sourcing often leads to better pricing compared to intermediaries.
  • Quality Assurance: Reputable manufacturers adhere to international standards (e.g., ISO certifications) and provide detailed quality control data.
  • Technical Support: Access to technical experts who can advise on product application and troubleshooting.
  • Supply Chain Reliability: Establishing a direct relationship ensures consistent availability and timely deliveries.

Making the Purchase Decision
When you are ready to buy UV Absorber 234, consider reaching out to us. As a dedicated manufacturer and supplier, we offer high-quality UV Absorber 234 with guaranteed specifications. We provide transparent pricing and excellent technical support to help you make an informed purchase. Contact our sales department to request a quote, samples, and discuss your specific requirements. Investing in a quality UV absorber from a trusted source is an investment in the longevity and marketability of your products.