Description

4-Methoxyphenol CAS NO 150-76-5 is a versatile phenolic compound widely used as a polymerization inhibitor and antioxidant in industrial processes. Its primary value lies in its ability to stabilize monomers like styrene, acrylates, and vinyl acetate against premature polymerization during storage and transportation, ensuring process safety and product quality. This makes it an essential raw material for manufacturers in the polymer, resin, adhesive, and specialty chemical industries seeking reliable stabilization solutions.

Application

• Polymerization Inhibitor: A critical stabilizer for vinyl monomers (e.g., styrene, acrylic acid) to prevent unwanted thermal polymerization during production, purification, and storage.
• Antioxidant: Used in oils, fats, and certain polymers to retard oxidative degradation, extending shelf life and maintaining material properties.
• Photographic Developer: Serves as a key intermediate or developing agent in specific photographic and photochemical applications.
• Pharmaceutical Intermediate: Employed in the synthesis of various active pharmaceutical ingredients (APIs) and fine chemicals.
• Cosmetic & Personal Care: Functions as an antioxidant in specific formulations to protect ingredients from rancidity.
• Chemical Synthesis: Acts as a versatile building block for synthesizing more complex organic molecules, including other antioxidants and agrochemicals.

Basic Information

Product Name	4-Methoxyphenol
CAS No.	150-76-5
Molecular Formula	C7H8O2
Molecular Weight	124.14 g/mol
Synonyms	Hydroquinone monomethyl ether; Mequinol; p-Methoxyphenol; 4-Hydroxyanisole; p-Hydroxyanisole; 1-Hydroxy-4-methoxybenzene; Inhibitor MEHQ
EINECS	205-769-8

Quality Control

Our 4-Methoxyphenol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment and are available upon request.

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; for long-term storage, an inert atmosphere (e.g., nitrogen) is recommended.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	52 - 57 °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.