Chemical Properties and Handling of UV Absorber UV-1 for Optimal Performance
The effective utilization of any chemical additive hinges on a thorough understanding of its properties and proper handling procedures. Ethyl 4-[[(methylphenylamino)methylene]amino]benzoate, known industrially as UV absorber UV-1, is a critical component for enhancing the UV stability of polymers. This article details its key chemical properties, specifications, and provides essential guidance on its safe and effective handling and storage.
UV absorber UV-1 is a liquid formamidine-type organic compound. Its chemical name is Ethyl 4-[[(methylphenylamino)methylene]amino]benzoate, and it is commonly identified by the CAS number 57834-33-0. The molecular formula is C17H18N2O2, with a molecular weight of approximately 282.34 g/mol. A key characteristic is its appearance: a light yellow to yellow liquid. While specifications can vary slightly between manufacturers, typical purity levels are high, often exceeding 98.5% as determined by Gas Chromatography (GC).
Understanding its physical properties is crucial for formulation and processing. UV-1 has a relatively high boiling point, around 188-190°C at 13 Pa, indicating low volatility. Its density is typically around 1.127 g/cm³, and its viscosity at 20°C is approximately 4752 mPa·s. Importantly, UV-1 exhibits good solubility in many organic solvents and is miscible with polyether and polyester polyols, facilitating its incorporation into polyurethane systems. Its water solubility is negligible, which is advantageous for applications exposed to moisture.
One notable characteristic is its tendency to crystallize at low temperatures. To ensure its liquid state for processing, it is recommended to heat UV-1 gently to 60-70°C. This heating process does not affect the product's quality or performance. To prevent crystallization altogether, storage at room temperature (around 25°C) in tightly sealed containers is advised.
Regarding safety and handling, it is imperative to consult the Material Safety Data Sheet (MSDS) provided by the supplier. Standard practices for handling chemicals should be followed, including wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and protective clothing. Good ventilation in the work area is also recommended. Proper storage in a cool, dry place, away from direct sunlight and incompatible materials, is essential for maintaining product integrity and safety.
By adhering to these guidelines for handling and storage, manufacturers can ensure that UV absorber UV-1 performs optimally within their polymer formulations, providing robust and lasting protection against UV degradation. As a leading supplier in China, we are committed to providing high-quality UV-1 with comprehensive technical support to help you achieve the best results.
UV absorber UV-1 is a liquid formamidine-type organic compound. Its chemical name is Ethyl 4-[[(methylphenylamino)methylene]amino]benzoate, and it is commonly identified by the CAS number 57834-33-0. The molecular formula is C17H18N2O2, with a molecular weight of approximately 282.34 g/mol. A key characteristic is its appearance: a light yellow to yellow liquid. While specifications can vary slightly between manufacturers, typical purity levels are high, often exceeding 98.5% as determined by Gas Chromatography (GC).
Understanding its physical properties is crucial for formulation and processing. UV-1 has a relatively high boiling point, around 188-190°C at 13 Pa, indicating low volatility. Its density is typically around 1.127 g/cm³, and its viscosity at 20°C is approximately 4752 mPa·s. Importantly, UV-1 exhibits good solubility in many organic solvents and is miscible with polyether and polyester polyols, facilitating its incorporation into polyurethane systems. Its water solubility is negligible, which is advantageous for applications exposed to moisture.
One notable characteristic is its tendency to crystallize at low temperatures. To ensure its liquid state for processing, it is recommended to heat UV-1 gently to 60-70°C. This heating process does not affect the product's quality or performance. To prevent crystallization altogether, storage at room temperature (around 25°C) in tightly sealed containers is advised.
Regarding safety and handling, it is imperative to consult the Material Safety Data Sheet (MSDS) provided by the supplier. Standard practices for handling chemicals should be followed, including wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and protective clothing. Good ventilation in the work area is also recommended. Proper storage in a cool, dry place, away from direct sunlight and incompatible materials, is essential for maintaining product integrity and safety.
By adhering to these guidelines for handling and storage, manufacturers can ensure that UV absorber UV-1 performs optimally within their polymer formulations, providing robust and lasting protection against UV degradation. As a leading supplier in China, we are committed to providing high-quality UV-1 with comprehensive technical support to help you achieve the best results.
Perspectives & Insights
Chem Catalyst Pro
“Its water solubility is negligible, which is advantageous for applications exposed to moisture.”
Agile Thinker 7
“To ensure its liquid state for processing, it is recommended to heat UV-1 gently to 60-70°C.”
Logic Spark 24
“To prevent crystallization altogether, storage at room temperature (around 25°C) in tightly sealed containers is advised.”