1,4-디메톡시벤젠
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1,4-디메톡시벤젠 속성
- 녹는점
- 54-56 °C(lit.)
- 끓는 점
- 213 °C(lit.)
- 밀도
- 1.053 g/mL at 25 °C(lit.)
- 증기 밀도
- 4.8 (vs air)
- 증기압
- <1 mm Hg ( 20 °C)
- 굴절률
- 1.5231 (estimate)
- 인화점
- 98 °C
- 저장 조건
- Sealed in dry,Room Temperature
- 용해도
- 디옥산: 0.1 g/mL, 투명
- 물리적 상태
- 결정질 분말, 결정 또는 플레이크
- 색상
- 하얀색
- Specific Gravity
- 1.053
- 수소이온지수(pH)
- 7 (H2O, 20℃)(saturated solution)
- 냄새
- 디프로필렌 글리콜 중 1.00%. 달콤한 녹색 새 잔디 건초 회향
- ?? ??
- 녹색
- 폭발한계
- 1.2-5.6%(V)
- 수용성
- 0.8g/L(20℃)
- 감도
- Light Sensitive
- JECFA Number
- 1250
- BRN
- 774605
- Dielectric constant
- 4.5（23℃）
- 안정성
- 안정적인. 타기 쉬운. 강한 산화제와 호환되지 않습니다.
- LogP
- 2.08 at 20℃
- CAS 데이터베이스
- 150-78-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 36/37/38 | ||
| 안전지침서 | 26-36-24/25 | ||
| WGK 독일 | 1 | ||
| RTECS 번호 | CZ6650000 | ||
| 자연 발화 온도 | 1463 °F | ||
| TSCA | Yes | ||
| HS 번호 | 29093090 | ||
| 유해 물질 데이터 | 150-78-7(Hazardous Substances Data) | ||
| 기존화학 물질 | KE-11036 |
1,4-디메톡시벤젠 C화학적 특성, 용도, 생산
화학적 성질
white crystals or powder출처
Reported found in hyacinth (Hyacinthus orientalis L.) essential oil, Rhodophyllus icterius, papaya, peppermint oil, green tea, cherimoya and cooked shrimp용도
1,4-Dimethoxybenzene is used as Pharmaceutical Intermediate. It is used in some paints and as a diazo dye. It is also used in perfumes and flavors in order to its floral odor. In addition, it is used on greasy skin, and with sulfur to treat acne, or as a dandruff treatment.제조 방법
By methylation of hydroquinone using dimethyl sulfate and alkali.일반 설명
Colorless crystals.공기와 물의 반응
Slightly water soluble .반응 프로필
1,4-Dimethoxybenzene is an ether. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.Synthesis
An aqueous solution of sodium hydroxide (40%,175 ml) is added dropwiseduring 3 hr at 18-22° to a well stirred mixture of hydroquinone (50 g,0.45mole)，sodium hydrosulphite (2.0 g,0.115 mole), dimethyl sulphate (110ml,146.63 g,1.16 mole) and alcohol (150 ml). Ice (1 kg) is added and the reaction mixture left overnight at room temperature. It is extracted withether (2 × 200 ml). The ether extract is washed with water,dried(anhydrous sodium sulphate) and distilled.1,4-Dimethoxy benzene isobtained as an oil. Yield 52.75 g (84.1%).It solidifies on cooling and iscrystallised from ether-petroleum ether as shining needles. M.p. 55-56°.Purification Methods
Steam distil 1,4-dimethoxybenzene, then crystallise it from hexane or *benzene, and from MeOH or EtOH, but these are wasteful due to high solubilities. Dry it under vacuum. It also sublimes under vacuum. [Beilstein 6 IV 5718.]1,4-디메톡시벤젠 준비 용품 및 원자재
원자재
준비 용품
메틸2-아미노-2-(4-하이드록시페닐)아세테이트
아네톨
Acemetacin
N-이소프로필아크릴아마이드
1-(2,5-디메톡시페닐)-2-옥시미노-1-프로파논
클로로넵
2,3-DICHLORO-5,8-DIHYDROXY-1,4-나프토퀴논
아스테미졸
2,5-디메톡시프로피오페논
1,4-디메톡시-2-니트로벤젠
(2,5-Dimethoxyphenyl)acetic acid
1-(2 5-DIMETHOXYPHENYL)-2-AMINOPROPANE&
2,5-디클로로벤조-1,4-퀴논
2,5-디메톡시아닐린
2,5-디히드록시벤조니트릴
2,5-dimethoxyterephthalohydrazide
2-tert-부틸-1,4-디메톡시벤젠
2-아세톡시-2',5'-메톡시벤조페논
(2,5-dimethoxyphenyl)-pyridin-2-ylmethanol
1,4-디메톡시벤젠 공급 업체
글로벌( 600)공급 업체
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