For R&D scientists and product formulators, understanding the precise technical specifications of chemical raw materials is fundamental to achieving optimal performance and ensuring product safety. Butylated Triphenyl Phosphate Ester (BPDP), a crucial flame retardant plasticizer, comes with a set of defined characteristics that dictate its suitability for various applications. This article aims to demystify these technical specifications and guide professionals on how to interpret them when they intend to buy BPDP.

The primary specification for BPDP, with CAS number 56803-37-3, is its Appearance. It is typically described as a Light Yellow Transparent Liquid. This visual characteristic is an initial indicator of purity; any significant deviations in color or clarity might suggest impurities or degradation. Manufacturers and suppliers, such as ourselves, rigorously control this parameter to ensure product integrity.

Another critical parameter is the Phosphorus Content (P%). For BPDP, this typically ranges around 8.1% or higher, indicating the concentration of phosphorus, which is the key element responsible for its flame-retardant capabilities. A higher phosphorus content generally translates to more effective flame retardancy. When comparing different suppliers, this value is a significant metric for assessing efficacy.

Viscosity is also an important factor, especially for processing. For BPDP, the viscosity at 25°C is typically in the range of 65-75 mPas. This value indicates how easily the liquid flows, which is crucial for pumping, mixing, and dispensing during manufacturing processes. Lower viscosity generally leads to easier handling and better dispersion within polymer matrices.

The Acid Value (mgKOH/g) is a measure of residual acidity. A low acid value, usually ≤0.1 mgKOH/g, signifies minimal residual acid from the manufacturing process, indicating a high-quality product with better stability and reduced risk of corrosion or side reactions in formulations. Similarly, Moisture content is kept very low, typically ≤0.1%, to prevent hydrolysis and maintain product stability.

Specific Gravity (density at 20°C or 25°C) is another important property, typically around 1.177-1.187 g/cm³. This value is useful for volumetric calculations in formulations and for quality control checks. The Color Value (APHA), usually ≤100, further quantifies the color intensity, ensuring a consistent and acceptable aesthetic for the final product.

For those looking to buy Butylated Triphenyl Phosphate Ester, understanding these specifications allows for informed decisions. By comparing these technical parameters from different manufacturers, you can ensure that the BPDP you procure meets your exact application requirements, whether it's for high-performance PVC formulations, advanced PC/ABS alloys, or other specialized polymer systems. Partnering with a reliable supplier in China means gaining access to products with well-documented and consistent specifications, ensuring the success of your product development and manufacturing processes.