4-Methoxyphenol
- p-Methoxyphenol
- Hydroxyquinone, monomethyl ether
- p-Hydroxyanisole
- Mequinol
4-Methoxyphenol | |
| |
| Formula | C7H8O2 |
| Structure | |
| Description | White to off-white waxy solid or flaky, crystalline material. Odor of caramel and phenol. |
| Uses | Manufacture of antioxidants, pharmaceuticals, plasticizers, dyestuffs, uv inhibitor, stabilizer for chlorinated hydrocarbons & ethyl cellulose, inhibitor for acrylic monomers & acrylonitriles. |
| Registry Numbers and Inventories. | |
| CAS | 150-76-5 |
| EC (EINECS/ELINCS) | 205-769-8 |
| EC Index Number | 604-044-00-7 |
| EC Class | Harmful; Irritant; Sensitising |
| EC Risk Phrase | R 22 36 43 |
| EC Safety Phrase | S 24/25 26 37/39 46 |
| RTECS | SL7700000 |
| RTECS class | Mutagen; Primary Irritant |
| UN (DOT) | 3335 |
| Beilstein/Gmelin | 507924 |
| Beilstein Reference | 4-06-00-05717 |
| Swiss Giftliste 1 | G-4246 |
| Canada DSL/NDSL | DSL |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| New Zealand | Listed |
| Japan ENCS (MITI) | Listed |
| Korea ECL | Listed |
| Properties. | |
| Formula | C7H8O2 |
| Formula mass | 124.14 |
| Melting point, °C | 55 - 57 |
| Boiling point, °C | 243 |
| Vapor pressure, mmHg | 0.02 (25 C) |
| Vapor density (air=1) | 4.2 |
| Saturation Concentration | <13 ppm at 25 C (calculated) |
| Density | 1.55 g/cm3 (20 C) |
| Solubility in water | 40 g/L |
| Viscosity | 4.58 cp (72 C) |
| Surface tension | 29.9 g/s2 (184 C) |
| pKa/pKb | 10.40 (pKa) |
| Partition coefficient, pKow | 1.58 |
| Heat of fusion | 18.30 kJ/mol |
| Heat of vaporization | 49.9 kJ/mol |
| Hazards and Protection. | |
| Storage | Store in a cool, dry place. Store in a tightly closed container. |
| WHMIS | D2B |
| Handling | Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. |
| Protection | Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. |
| Respirators | Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. |
| Small spills/leaks | Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. |
| Disposal code | 3 |
| Stability | Stable under normal temperatures and pressures. |
| Incompatibilities | Acid anhydrides, acid chlorides, bases, oxidizing agents. |
| Decomposition | Carbon monoxide, carbon dioxide. |
| Fire. | ||||
| Flash Point,°C | 121 | |||
| Autoignition, °C | 445 | |||
| Upper exp. limit, % | 9.6 | |||
| Lower exp. limit, % | 1.3 | |||
| Fire fighting | Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam. | |||
| Fire potential | Combustible. | |||
| Hazards | Combustible | |||
| NFPA | Health | 1 | ||
| Flammability | 1 | |||
| Reactivity | 0 | |||
| Health. | |
| Exposure limit(s) | NIOSH REL: TWA 5 mg/m3 |
| Poison_Class | 4 |
| Exposure effects | Chronic exposure may cause visual disturbances. Prolonged contact may cause severe eye irritation or burns. |
| Ingestion | May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May be harmful if swallowed. |
| Inhalation | May cause respiratory tract irritation. |
| Skin | Causes skin irritation. May cause depigmentation of the skin. |
| Eyes | Causes eye irritation. May cause eye burns. |
First aid |
|
| Ingestion | If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid. |
| Inhalation | Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. |
| Skin | Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. |
| Eyes | Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. |
| Transport. | ||
| UN number | 3335 | |
| Response guide | 171 | |
| USCG Compatatibility Group | 21. Phenols. Cresols | |
| HS Code | 2909 50 90 | |