| 外観 | 白色～わずかにうすい黄色, 結晶～結晶性粉末 |
| 定義 | 本品は、フェノール(*)の誘導体であり、次の化学式で表される。
参照表示名称：フェノール |
| 溶解性 | 水に微溶 (4g/100ml 25℃).エタノール, エーテルに易溶。エタノール及びアセトンに溶けやすく、水に溶けにくい。 |
| 用途 | 有機合成原料、安定剤(重合禁止剤)。1. アクリル酸エステル、アクリルニトリルモノマーの重合防止剤 添加量は10～500ppm。2. 油脂、脂肪酸、石けん等の酸化防止剤。3. エチルセルロースへの0.5～3%添加により粘度、柔軟性等の保持に効果。 |
| 用途 | 重合防止剤、香料、プラスチック添加剤 |
| 化粧品の成分用途 | 還元剤、酸化防止剤、香料 |
| 効能 | 色素沈着改善薬 |
| 説明 | 4-Methoxyphenol is a colorless to white, waxy solid with an odor of caramel and phenol. A combustible solid. Molecular weight= 124.15;Boiling point=243℃; Freezing/Melting point=5253℃; Flash point=132℃. Hazard Identification (based on NFPA-704 M Rating System): Health 2, Flammability 1, Reactivity 0. Slightly soluble in water. |
| 化学的特性 | 4-Methoxyphenol is a colorless to white, waxy solid with an odor of caramel and phenol. It is a combustible solid. It is used as an inhibitor for acrylic monomers and as a stabilizer for chlorinated hydrocarbons, ethyl cellulose, and UV inhibitors. |
| 使用 | 4-Methoxyphenol is an active ingredient and used in dermatology. It is employed as a pharmaceutical drug in skin depigmentation. It is used as polymerization inhibitors. For example, in the radical polymerization of acryaltes and styrene monomers. It is also used as an intermediate in the preparationagrochemicals, liquid crystals. It acts as a stabilizer for the formulation of inks, toners and adhesives. It is mainly used as an additive for textile and leather industries. |
| 合成 | 4-Methoxyphenol was synthesised according to Oxidation with H2O2 and a Diselenide catalyst.
p-Anisaldehyde (50 mmol) is dissolved in CH2Cl2 (100mL) and (o-NO2PhSe)2 (2 mmol) and 30% H2O2 (13mL, 128 mmol) are added. The mixture is stirred magnetically at room temperature (water bath) for 30 minutes. Insoluble catalyst is removed by filtration and washed with CH2Cl2 (20mL) and water (20mL). It can be reused after drying. To the filtrate and washings, water (100mL) is added, and the layers are separated after shaking. The organic layer is washed subsequently with 10% NaHSO3 (100mL), 10% Na2CO3 (100mL), water (100mL) and dried over Na2SO4. 4-methoxyphenol is obtained by alkaline hydrolysis of the residue. Yield: 93%. |
| 定義 | ChEBI: P-methoxyphenol is a member of phenols and a member of methoxybenzenes. It has a role as a metabolite. |
| 適応症 | Mequinol (4-hydroxyanisole) is a substrate of the enzyme tyrosinase and acts
as a competitive inhibitor of melanogenesis. |
| 反応性 | 4-methoxyphenol(4-MP) may be used in the synthesis of butylated hydroxy anisoles via alkylation with methyl tert-butyl ether over a non-zeolitic solid acidic catalyst. This process is eco-friendly when compared to the Friedel-Crafts alkylation reaction. 4-MP may also react with aqueous nitrous acid to form 2-nitro-4-methoxyphenol and benzoquinone in varying ratios depending on the reaction conditions. 4-MP can be used as a building block in designing β-cyclodextrin 4-methoxyphenol conjugates that can be potential ligands for drug complexation. |
| Synthesis Reference(s) | The Journal of Organic Chemistry, 42, p. 1479, 1977 DOI: 10.1021/jo00428a054
Synthesis, p. 751, 1983 DOI: 10.1055/s-1983-30501
Tetrahedron Letters, 34, p. 7667, 1993 DOI: 10.1016/S0040-4039(00)61534-4 |
| 一般的な説明 | Pink crystals or white waxy solid. |
| 空気と水の反応 | Sensitive to moisture. Water soluble. |
| 反応プロフィール | 4-Methoxyphenol can react with oxidizing materials. |
| 危険性 | Eye irritant and skin damage. |
| 健康ハザード | 4-Methoxyphenol is expected to
cause liver and renal toxicity with narcosis, but
only at high levels of exposure. |
| 火災危険 | Combustible |
| 燃焼性と爆発性 | Non flammable |
| 安全性プロファイル | Poison by
intraperitoneal route. A skin irritant. When
heated to decomposition it emits acrid
smoke and fumes. See also ETHERS. |
| 職業ばく露 | Mutagen, Primary Irritant. This compound is used in the manufacture of antioxidants, pharmaceuticals, plasticizers, and dyestuffs. It is used as a stabilizer and UV inhibitor in various polymers. |
| 応急処置 | If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. |
| 貯蔵 | Protect containers from physical damage. Store in tightly closed containers in a cool, well-ventilated area. Sources of ignition, such as smoking and open flames, are prohibited where 4-methoxyphenol is used, handled, or stored in a manner that could create a potential fire or explosion hazard. |
| 輸送方法 | UN3335 Aviation regulated solid, n.o.s., Hazard
class: 9; Labels: 9-Miscellaneous hazardous material,
Technical Name Required. |
| 純化方法 | Crystallise 4-methoxyphenol from *benzene, pet ether or H2O, and dry it under vacuum over P2O5 at room temperature. Sublime it in vacuo. [Wolfenden et al. J Am Chem Soc 109 463 1987, Beilstein 6 IV 5717.] |
| 不和合性 | Strong oxidizers, strong bases, acid chlorides, acid anhydrides. Under certain conditions, a dust cloud can probably explode if ignited by a spark or flame. |