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  Max Attwood,Hiroki Akutsu,Lee Martin,Toby J. Blundell,Pierre Le Maguere,Scott S. Turner Dalton Trans., 2021,50, 11843-11851
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  Xiaotong Feng,Lei Bian,Jie Ma,Lei Zhou,Xiayan Wang,Guangsheng Guo,Qiaosheng Pu Chem. Commun., 2019,55, 3963-3966
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• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Benzoic acid esters
• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Benzoic acids and derivatives Benzoic acid esters

Comprehensive Guide to Phenethyl 4-hydroxybenzoate (CAS No. 83936-28-1): Properties, Applications, and Industry Insights

Phenethyl 4-hydroxybenzoate (CAS No. 83936-28-1), also known as phenethyl paraben, is a synthetic ester derived from 4-hydroxybenzoic acid and phenethyl alcohol. This compound belongs to the paraben family, widely recognized for its antimicrobial and preservative properties. With increasing consumer demand for stable formulations in cosmetics, pharmaceuticals, and food industries, Phenethyl 4-hydroxybenzoate has gained attention as a versatile ingredient. Its molecular structure (C₁₅H₁₄O₃) ensures compatibility with diverse formulations while inhibiting microbial growth.

Recent trends highlight a surge in searches for "paraben alternatives" and "safe preservatives," reflecting growing consumer awareness. Despite debates around parabens, Phenethyl 4-hydroxybenzoate remains a subject of research due to its low toxicity profile and efficacy at low concentrations (typically 0.1–0.8%). Studies emphasize its stability under varying pH conditions, making it ideal for skincare products like serums and creams. Notably, its lipophilic nature enhances solubility in oil-based formulations, addressing formulation challenges in organic cosmetics.

In the pharmaceutical sector, CAS No. 83936-28-1 is valued for extending shelf life in topical medications. Its mechanism involves disrupting microbial cell membranes, a feature explored in "preservative synergy studies." Researchers are investigating combinations with natural extracts (e.g., rosemary or grapefruit seed extract) to meet "clean label" demands. Regulatory bodies like the FDA and EMA classify it as GRAS (Generally Recognized As Safe) within specified limits, though regional regulations vary.

From an industrial perspective, Phenethyl paraben is synthesized via esterification, with optimized processes minimizing byproducts. Analytical methods like HPLC and GC-MS ensure purity, critical for compliance with ISO 22716 (cosmetics) and GMP standards. Manufacturers emphasize "green chemistry" approaches, reducing solvent waste—a response to eco-conscious buyer preferences.

Emerging applications include food packaging, where Phenethyl 4-hydroxybenzoate is embedded in films to inhibit mold. This aligns with the "active packaging" trend, reducing food waste. Meanwhile, dermatological studies explore its potential in acne treatments, leveraging its antibacterial action against Cutibacterium acnes. Such innovations address frequent queries like "preservatives for sensitive skin" and "non-irritating antimicrobials."

Storage recommendations for CAS 83936-28-1 include airtight containers away from light, ensuring stability. Suppliers often provide third-party certifications (e.g., COSMOS or ECOCERT) to cater to vegan and cruelty-free markets. As sustainability gains traction, lifecycle assessments of parabens are reshaping procurement strategies—highlighting the need for transparent supply chain data.

In conclusion, Phenethyl 4-hydroxybenzoate bridges functionality and safety across industries. While debates on preservatives persist, its proven efficacy and adaptability to green formulations solidify its role. Future research may focus on biodegradability and synergistic systems, answering calls for "next-gen preservation" solutions.

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