"Discover 2-Phenylphenol (CAS 90-43-7), a powerful antimicrobial agent widely used in surface disinfectants, food packaging, and cosmetic preservatives. Learn its applications, safety data, and regulatory compliance."
-Deshangchemical
2-Phenylphenol, also known as ortho-phenylphenol or OPP, is a widely used aromatic organic compound with the molecular formula C₁₂H₁₀O and CAS number 90-43-7. Recognized for its broad-spectrum antimicrobial efficacy, this substance plays a vital role in many industrial, agricultural, and personal care applications. Commercially, 2-Phenylphenol appears as a white to off-white crystalline solid with a distinct phenolic odor, indicating high purity and stability.
Chemical and Physical Properties of 2-Phenylphenol
2-Phenylphenol CAS 90-43-7 is a stable and effective antimicrobial agent. It has a molecular weight of approximately 170.21 g/mol and a melting point in the range of 57 to 59°C. While it is slightly soluble in water, it dissolves readily in ethanol, methanol, acetone, and various organic solvents, which makes it highly versatile in formulation processes.
Its EINECS number is 201-993-5, and its pKa value is around 9.5, indicating weak acidity typical of phenolic compounds. The compound should be stored in a cool, dry, well-ventilated area, away from heat sources and strong oxidizers to preserve its chemical integrity and effectiveness.
Applications of 2-Phenylphenol CAS 90-43-7
Surface Disinfection
2-Phenylphenol is widely used in disinfectant formulations for hospitals, schools, food-processing environments, and household cleaners. It effectively eliminates a wide range of bacteria, fungi, and yeast, providing reliable long-lasting antimicrobial protection on hard surfaces.
Agricultural Use and Food Packaging
As a post-harvest fungicide, 2-Phenylphenol CAS 90-43-7 protects citrus fruits and other crops from mold and decay during transport and storage. It is also used in food packaging materials to extend product shelf life by preventing microbial contamination.
Cosmetic and Personal Care Industry
In low, regulated concentrations, 2-Phenylphenol serves as a preservative in cosmetic and personal hygiene products such as creams, shampoos, and wipes. Its antimicrobial action helps maintain product stability and safety throughout shelf life, particularly in formulations prone to microbial exposure.
Industrial and Institutional Cleaning Products
Due to its chemical robustness and broad pH tolerance, 2-Phenylphenol is incorporated into industrial detergents, sanitizers, and cleaners used in factories, dairy plants, and institutional cleaning programs. It remains active in both acidic and mildly alkaline conditions, making it a preferred active ingredient in complex cleaning systems.
Safety and Handling Information
2-Phenylphenol CAS 90-43-7 is generally considered safe when used according to regulatory guidelines. However, precautions must be taken during handling. The compound may cause irritation to the skin and eyes upon contact, and inhalation of dust may irritate the respiratory tract.
Personal protective equipment (PPE) such as gloves, goggles, and dust masks is recommended when handling bulk quantities. Adequate ventilation and appropriate storage conditions will ensure safe use. The substance is not classified as carcinogenic, but long-term exposure without protection should be avoided.
2-Phenylphenol is compliant with various international regulatory bodies, including the EPA, REACH (EU), and FDA (for specific uses such as post-harvest fungicides and food contact materials under controlled limits).
GHS Classification: Irritant
Hazard Codes: H315 (causes skin irritation), H319 (causes serious eye irritation)
Storage: Keep tightly sealed, in a cool, ventilated place, away from direct sunlight and heat sources.
Why Choose 2-Phenylphenol (CAS 90-43-7)?
Proven antimicrobial efficacy in a wide range of applications
Excellent chemical stability and compatibility with various formulation systems
Effective at low concentrations, making it cost-efficient
Recognized and regulated for use in agriculture, healthcare, cosmetics, and industrial cleaning
Conclusion
2-Phenylphenol (CAS 90-43-7) is a high-performance antimicrobial and fungicidal compound that finds critical applications across the disinfectant, packaging, cosmetic, and industrial sectors. Its effectiveness, safety profile, and regulatory approval make it an ideal ingredient in formulations where hygiene and preservation are paramount. Whether used in personal care products or post-harvest treatments, 2-Phenylphenol ensures both performance and compliance in modern chemical applications.
