Applications of 4-Phenyl-2-Butanol in Industrial Manufacturing

As a manufacturer specializing in 4-Phenyl-2-Butanol, our materials directly support key formulations in pharmaceuticals, flavors and fragrances, agrochemicals, functional coatings, and polymer intermediates. We focus on supplying consistent quality to meet stringent compliance expectations and rigorous production environments across these industry segments. Below, we detail practical downstream scenarios where our product actively delivers value in real-world manufacturing settings.

1. Pharmaceutical Intermediate Synthesis for Cardiovascular Agents

4-Phenyl-2-Butanol plays a critical role as a synthetic intermediate in the production of select beta-blockers and vasodilators. In this scenario, pharmaceutical manufacturers use this molecule to construct side chains of active pharmaceutical ingredients where a phenylalkyl alcohol group is essential for biological activity. Batch synthesis typically involves Grignard-type reactions and reductive amination, with reaction conditions closely monitored for residual solvent control and impurity profiling.

Industry compliance standards

• ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
• US Pharmacopeia (USP) General Chapter <795>/<797>, as applied to API handling
• European Pharmacopoeia (Ph. Eur.) monograph requirements
• 21 CFR Part 211 (US FDA cGMP regulations)

Typical usage ratio

• Usually 0.9–1.2 molar equivalents relative to the target side chain; actual mass ratio depends on downstream derivative and is adjusted per synthetic yield and stoichiometry.

Downstream process integration

• Charged in initial condensation or coupling stage, followed by further derivatization and purification before forming the final active ingredient.

Final product types

• Beta-blocker APIs (e.g., those containing phenylbutanol side chains such as certain selective adrenergic receptor antagonists)
• Single-entity vasodilator actives

2. Fine Fragrance and Aroma Chemical Manufacturing

This material serves as a precursor and fixative component in specialty aroma chemical production, providing floral and fruity notes as well as enabling downstream synthesis of musky or sweet benzyl alcohol derivatives. Flavors and fragrance plants typically convert it via selective esterification or oxidation pathways. The alcohol’s stability and distinguishable odor profile allow for consistency in batch-to-batch aromatic blends for major perfumery brands.

Industry compliance standards

• IFRA Standards (International Fragrance Association)
• EU Regulation (EC) No 1223/2009 for cosmetic ingredients
• Food Chemicals Codex (as applicable for food aroma substances)
• ISO 9235:2021 for aromatic raw materials

Typical usage ratio

• Generally 0.2–1.5% by weight in fragrance oils, or up to 3% when used as a fixative in specialty perfumes, adjusted to final product intensity and stability requirements.

Downstream process integration

• Introduced during primary fragrance blend formulation; optionally esterified or oxidized prior to dilution and compounding for finished fragrance concentrate.

Final product types

• Fine perfumes (e.g., luxury and niche brands)
• Personal care scents (e.g., high-end soaps, lotions)
• Flavor/aroma additives for beverages and confectionery (where permitted)

3. Agrochemical Active Ingredient Precursor

Chemical synthesis operations within agrochemical manufacturing rely upon this compound as an intermediate for producing certain herbicide and plant growth regulator active ingredients. The alcohol group provides a suitable starting point for etherification and acylation routes, ensuring selective substitution on benzene and alkyl chains as designed for target compound performance in field applications. Reaction monitoring ensures minimal byproduct formation and compliance with agricultural chemical purity expectations.

Industry compliance standards

• EPA 40 CFR Part 158 (Data requirements for pesticides, US)
• FAO/WHO Codex Alimentarius for pesticide residues
• REACH (Regulation EC No 1907/2006, EU chemical safety)
• ISO 17025 requirements for analytical control in quality testing

Typical usage ratio

• Generally 75–95% molar ratio relative to esterification or amide forming agents; the actual charge varies by targeted synthesis path and designed yield.

Downstream process integration

• Added during base-catalyzed alkylation or acylation, followed by fractionation to isolate the specific agrochemical intermediate before final formulation, granulation, or suspension concentrate preparation.

Final product types

• Selective herbicide actives (e.g., ether- and ester-based classes)
• Plant growth modulation compounds

4. Functional Coating Resin Modifier

In the coatings industry, manufacturers employ this aromatic alcohol as a chain modifier, plasticizer, or functional group introducer during alkyd and polyester resin synthesis. Its structural influence enhances gloss, flexibility, and adhesion of cured films. Producers integrate it under nitrogen-purged reaction and vacuum stripping to minimize color formation and maximize hydroxyl group reactivity, taking care to meet end-use specifications for film hardness and environmental compliance.

Industry compliance standards

• ASTM D16 (Terminology for Paint, Related Coatings, Materials, and Applications)
• EU Directive 2004/42/EC (VOC emissions for paints and varnishes)
• ISO 9001:2015 for quality systems in specialty chemical production
• RoHS Directive 2011/65/EU (for coatings on electrical/electronic equipment)

Typical usage ratio

• Typically 2–6% by weight based on total polyol component; actual proportion tailored according to targeted resin properties such as flexibility versus hardness and gloss.

Downstream process integration

• Dosed after main monomer charge during polycondensation, with timing controlled to achieve desired molecular weight and resin homogeneity, followed by thinning and pigment dispersion (if required).

Final product types

• Gloss and semi-gloss architectural paints
• Industrial coating resins (e.g., coil coatings, can finishes)
• Plasticizer-modified clear coatings