p-Hydroxyanisole (MEHQ) is a highly effective and low-toxicity phenolic antioxidant and polymerization inhibitor, possessing antioxidant, anti-aging, and polymerization-inhibiting properties. It exhibits good chemical stability, significantly inhibits free radical polymerization, and has a much lower toxicity than traditional polymerization inhibitors. It is widely used in polymer polymerization, chemical synthesis, pharmaceuticals, daily chemicals, food, rubber and plastics industries. The mainstream export specifications are industrial grade 99%, reagent grade 99.5%, and food grade 99%, suitable for various compliance scenarios.

1. (Polymerization Industry)

Core Main Applications: As a specialized polymerization inhibitor for olefin monomers, it is used in the production, storage, and transportation of monomers such as acrylic acid, methacrylic acid, acrylates, methacrylates, styrene, and butadiene to inhibit monomer self-polymerization and scaling, preventing equipment blockage and monomer deterioration.

✅ Suitable for polymerization processes of acrylic resins, unsaturated polyesters, ABS resins, and synthetic rubber. Extremely low addition levels (a few ten-thousandths) are sufficient to achieve highly efficient polymerization inhibition without affecting subsequent polymerization reactions.

✅ Used for polymerization prevention in monomer distillation and refining processes, improving monomer purity and yield; it is a core auxiliary agent in the chemical polymerization field.

2. (Chemical & Coating/Ink Industry)

Antioxidants/Anti-aging Agents: Used in the production of alkyd resins, amino resins, epoxy resins, and polyurethane coatings to prevent oxidation and yellowing, viscosity increase, and improve the yellowing resistance and weather resistance of the paint film during storage and application.

Ink Stabilizers: Added to printing inks and varnishes to inhibit the oxidative degradation of ink components, maintain stable ink viscosity, and prevent printing problems such as smearing and color difference.

Organic Synthesis Intermediates: Used in the synthesis of dyes, fragrances, pharmaceutical intermediates, pesticide adjuvants, etc., and are important raw materials for fine chemical synthesis.

3. (Pharmaceutical & Food Industry)

Pharmaceutical Synthesis: As a pharmaceutical intermediate, it is used in the synthesis of antipyretics, analgesics, antibiotics, and cardiovascular drugs. It can also be used as an antioxidant stabilizer in pharmaceutical preparations to prevent the oxidative degradation of the active ingredients.

Food Additives: Food-grade p-hydroxyanisole is used as a food antioxidant and preservative in oils, fried foods, nuts, pastries, and meat products to preserve freshness, inhibit oxidative rancidity of oils, and extend shelf life. It can also be used for antioxidant modification of food packaging materials to prevent aging and migration of packaging materials.

4. (Rubber & Plastic Industry)

Rubber Antioxidant: Used in the processing and storage of natural and synthetic rubber (styrene-butadiene rubber, nitrile rubber, butadiene rubber) to prevent thermo-oxidative and ozone aging, improve the flexibility and service life of rubber products, and is suitable for tires, rubber seals, hoses, etc.

Plastic Antioxidant: Used in PVC, PP, PE, ABS, and other plastics to inhibit oxidative degradation during processing (extrusion, injection molding) and use, prevent discoloration and cracking, and improve the weather resistance and mechanical properties of plastic products.

5. (Cosmetic & Daily Chemical Industry)

Skincare/Makeup Stabilizer: Added to creams, lotions, lipsticks, foundations, etc., as an antioxidant to prevent the oxidation and deterioration of oils, vitamins, plant extracts, and other ingredients, extending the shelf life of cosmetics and reducing yellowing and odor caused by oxidation in skincare products.

Hair Care Products: Used in shampoos, conditioners, and shower gels to inhibit the oxidation of surfactants and active ingredients in the formula, improving the stability and effectiveness of hair care products.

6. (Other Industrial Uses)

Oil Additives: Antioxidants used in lubricating oils, hydraulic oils, and fuel oils to prevent high-temperature oxidation that produces sludge and carbon deposits, thus improving oil performance and extending oil change intervals.

Photosensitive Materials: Used in the production of photographic film and paper as a stabilizer to prevent oxidation and degradation of photosensitive materials, thereby improving image quality.

Electroplating Industry: Used as a stabilizer in electroplating solutions to prevent oxidation of the solution components and improve the smoothness and gloss of the electroplated layer.