In the realm of chemical sourcing, precise identification and consistent quality are paramount for successful industrial applications. CAS Number 117-81-7 unequivocally identifies Dioctyl Phthalate (DOP), a fundamental plasticizer widely employed in the modification of polymers, most notably Polyvinyl Chloride (PVC). For procurement specialists, R&D scientists, and formulation chemists, understanding the significance of this CAS number and securing a reliable supply of high-quality DOP from reputable sources, particularly China manufacturers, is key to achieving optimal product outcomes.

Understanding CAS 117-81-7: Dioctyl Phthalate (DOP)

Dioctyl Phthalate is a diester of phthalic acid, characterized by its colorless, oily liquid appearance. Its primary function in polymer science is to impart flexibility, pliability, and processability to otherwise rigid polymers. The chemical structure of DOP allows it to intercalate between polymer chains, effectively reducing intermolecular forces and lowering the glass transition temperature (Tg). This results in a material that can be easily molded, extruded, or calendered into a vast array of shapes and forms.

The specific properties that make DOP a favored choice for industrial applications include:

• Exceptional Plasticizing Efficiency: It provides a significant increase in flexibility at relatively low concentrations.
• Low Volatility: This ensures that the plasticizer remains within the polymer matrix over extended periods, contributing to product longevity.
• Good Resistance Properties: Including resistance to water, weathering, and light, which enhances the durability of finished goods.
• Electrical Insulation: Making it suitable for use in wire and cable sheathing.

Sourcing High-Quality DOP with CAS 117-81-7

When you need to buy Dioctyl Phthalate, especially for demanding industrial applications, focusing on quality and a reliable supply chain is essential. China has become a dominant global producer of chemical intermediates and additives, including DOP. Partnering with a reputable DOP plasticizer manufacturer in China offers several advantages:

• Access to High-Purity Product: Reputable manufacturers typically offer DOP with purity levels of 99.5% or higher, ensuring consistent performance.
• Competitive Pricing: The scale of Chinese manufacturing often translates to a more favorable Dioctyl Phthalate price.
• Reliable Supply: Established suppliers can meet large volume orders and ensure timely delivery, critical for production continuity.
• Technical Expertise: Many Chinese chemical companies provide technical support to help optimize formulations.

For procurement managers and scientists, identifying a trustworthy chemical supplier in China that specializes in CAS 117-81-7 (Dioctyl Phthalate) is a strategic step towards ensuring the quality and cost-effectiveness of their PVC products. By prioritizing suppliers who adhere to international quality standards and offer robust logistics, you can secure a vital component for your manufacturing needs.