4-Methoxyphenol CAS 150-76-5 Information
| 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 |
|
What is 4-Methoxyphenol CAS 150-76-5?
Chemical labeling
Molecular formula: C₇H₈O₂
Molecular weight: 124.14 g/mol
Alternative names: p-hydroxyanisole, hydroquinone monomethyl ether, MEHQ
Appearance: White flaky or waxy crystals with a slight phenolic or caramel flavor.
Stability
Stable at room temperature, but flammable 🔥; Incompatible substances include strong oxidants, bases, acyl chlorides, and acid anhydrides, which may trigger reactions.
4-Methoxyphenol CAS 150-76-5 Use
Polymer industry
Polymerization inhibitor: It is used in the polymerization process of alken-based monomers such as acrylate and acrylonitrile, and can directly participate in the polymerization without removal.
Ultraviolet inhibitors: Protect plastics from photodegradation.
Food and Cosmetics
Antioxidant synthesis: The key intermediate is used in the synthesis of BHA (3-tert-butyl-4-hydroxyanisole), which is applied in the preservation of oils and cosmetics.
Fine chemical industry
Pharmaceutical/pesticide intermediates: Synthetic drugs (such as skin fading agents), fragrances and pesticides.
Industrial additives: Textile lubricating oil stabilizers, dye intermediates, concrete additives.
4-Methoxyphenol CAS 150-76-5 safety
Health hazard
Acute toxicity: Oral LD₅₀ in rats = 1600 mg/kg (moderate toxicity).
Stimulating:
Eye contact: May cause conjunctivitis, corneal damage (moderate irritation shown in rabbits) 👁️;
Skin contact: May cause allergy or mild irritation.
Reproductive toxicity: Suspected to be harmful to fertility or fetus (GHS classification: Reproductive Toxicity Category 2).
Environmental risk
Toxic to aquatic organisms (Acute Hazard Category 2), prevention of entry into water bodies is required.
Protection and First Aid
Operation protection: Dust masks, anti-toxic suits and rubber gloves must be worn.
Emergency response:
Skin contact: Rinse immediately with running water for 20 to 30 minutes;
Eye contact: Rinse with normal saline for 10 to 15 minutes and seek medical attention.
Inhalation: Transfer to a place with fresh air and administer oxygen.
