4-Methoxyphenol CAS 150-76-5, 4-Methoxyphenol, CAS 150-76-5
4-methoxyphenol (CAS 150-76-5) as a core functional chemical in multiple fields, its core value lies in:Irreplaceable polymerization resistance: Directly participates in copolymerization, simplifying the production process of alken-based monomers.
150-76-5
C7H8O2
124.14
205-769-8
| CAS | 150-76-5 |
| Molecular formula | C7H8O2 |
| Molecular weight | 124.14 |
| EIENCS | 205-769-8 |
| Form | Liquid |
| Melting point | 56 °C |
| boling point | 243 °C(lit.) |
| Density | 1,55 g/cm3 |
| Solubility | Soluble in acetone, ethyl acetate, ethanol, ether, benzene and carbon tetrachloride. |
| PKA | 10.21(at 25℃) |
| Color | Clear colorless to pale yellow |
| Storage temp | Store below +30°C. |
4-methoxyphenol (CAS 150-76-5) as a core functional chemical in multiple fields, its core value lies in:
Irreplaceable polymerization resistance: Directly participates in copolymerization, simplifying the production process of alken-based monomers;
Hub position in the industrial chain: From antioxidant BHA to liquid crystal materials, covering high value-added fields such as food, medicine, and electronics;
Green Synthesis Breakthrough: Low-temperature crystallization process achieves near-zero emissions (Recovery rate of sodium carbonate decahydrate >95%)
Polymer material additives
Polymerization inhibitor
It is used in the polymerization process of alkenyl monomers such as acrylic acid, acrylonitrile, and methyl methacrylate to inhibit pre-polymerization reactions (addition amount 0.001-0.1%), and can directly participate in copolymerization without removal.
Replace traditional phenolic polymerization inhibitors (such as hydroquinone), reduce post-treatment steps, and improve production efficiency.
Stabilizer
As a UV absorber for unsaturated polyester resin and polyvinyl chloride, it delays photodegradation (wavelength 290-320 nm).
2. Fine chemical intermediates
Antioxidant BHA synthesis: 3-tert-butyl-4-hydroxyanisole (BHA) is synthesized for use in edible oils and cosmetics for preservation (global annual demand exceeds 5,000 tons).
Pharmaceuticals and Pesticides
Prepare the intermediate of the anti-tumor drug paclitaxel and the anti-arrhythmic drug changliroline.
The demand for synthetic herbicides (glyphosate) and insecticides in the pesticide sector has increased by 5% annually.
Liquid crystal materials: Key raw materials for the synthesis of aryl ester liquid crystals (such as potassium 4-methoxyphenol).
3. Other functional applications
Photosensitive materials: Extend the storage stability of film and inhibit oxidation discoloration.
Plant growth regulation: Inhibiting the growth of specific crops, used for controlling excessive growth in agriculture.
Toxicity data
Acute oral LD₅₀ : 1600 mg/kg for rats (poisoning grade), 250 mg/kg for peritoneal LD₅₀ in mice.
Irritation: Skin contact with 6000 mg (rabbit test) causes mild erythema, and eye contact may cause inflammation.
Exposure limit
Workplace permitted concentration: TWA 5 mg/m³ (ACGIH/NIOSH standard).
Storage and Emergency Response
Storage: Keep sealed and away from light. Temperature <30°C, relative humidity <60%. Keep away from oxidants and halogens.
Leakage treatment: Absorb with sand and soil. Do not rinse with water (to prevent diffusion).
Fire extinguishing agents: mist water, dry powder, carbon dioxide.
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