Description

4-Methoxyphenol, also known as hydroquinone monomethyl ether, is a versatile phenolic compound with significant industrial utility. Its primary value lies in its dual functionality as an effective polymerization inhibitor for vinyl monomers and as a key intermediate in the synthesis of fine chemicals and pharmaceuticals. This product is essential for manufacturers in the polymer, agrochemical, and pharmaceutical sectors who require a reliable, high-purity antioxidant and building block to ensure process stability and product quality.

Application

• Polymerization Inhibitor: Widely used to prevent premature polymerization of acrylic acid, styrene, and other vinyl monomers during production, storage, and transportation.
• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of various active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Employed as an intermediate in the manufacture of certain herbicides, pesticides, and plant growth regulators.
• Antioxidant Agent: Functions as a stabilizer in oils, fats, and other organic materials susceptible to oxidative degradation.
• Photographic Developer: Used in specific photographic developing solutions and other imaging applications.
• Fine Chemical Synthesis: A valuable precursor for synthesizing more complex molecules in research and specialty chemical production.

Basic Information

Product Name	4-Methoxyphenol
CAS No.	151-76-5
Molecular Formula	C7H8O2
Molecular Weight	124.14 g/mol
Synonyms	Hydroquinone monomethyl ether; p-Methoxyphenol; MEHQ; 4-Hydroxyanisole; p-Hydroxyanisole; 1-Hydroxy-4-methoxybenzene; 4-Methoxyphenol; Inhibitor MEHQ
EINECS	205-796-1

Quality Control

Our 4-Methoxyphenol is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We offer standard industrial and high-purity grades, with specifications tailored to meet the rigorous demands of polymerization inhibition and fine chemical synthesis. Comprehensive quality testing is performed, and a Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is easily oxidized and should be kept under an inert atmosphere for long-term storage to maintain efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 99.0%
Melting Point	52 - 55 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.