4-4'-다이하이드록시디페닐
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4-4'-다이하이드록시디페닐 속성
- 녹는점
- 280-282 °C(lit.)
- 끓는 점
- 280.69°C (rough estimate)
- 밀도
- 1.22
- 증기압
- 0Pa at 25℃
- 굴절률
- 1.6010 (estimate)
- 저장 조건
- Sealed in dry,Room Temperature
- 물리적 상태
- 가루
- 산도 계수 (pKa)
- 9.74±0.26(Predicted)
- 색상
- 미색에서 밝은 베이지 또는 밝은 회색까지
- 수용성
- 난용성
- BRN
- 1908886
- LogP
- 2.7 at 20℃
- CAS 데이터베이스
- 92-88-6(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 21-36/37/38-37/38/68-36 | ||
안전지침서 | 26-36-24/25-36/37 | ||
유엔번호(UN No.) | 3077 | ||
WGK 독일 | 2 | ||
RTECS 번호 | DV4725000 | ||
TSCA | Yes | ||
위험 등급 | 9 | ||
포장분류 | III | ||
HS 번호 | 29061900 | ||
독성 | LD50 orl-rat: 9850 mg/kg TXAPA9 28,313,74 | ||
기존화학 물질 | 2000-3-1561 |
4-4'-다이하이드록시디페닐 C화학적 특성, 용도, 생산
화학적 성질
Powder용도
4,4'-biphenol be used intermediate liquid crystal polymers raw materials. Synthetic polymers, due to its excellent heat resistance, it is used as polyester, urethane modified monomer, polycarbonate, polysulfone, and epoxy resin, for the manufacture of an excellent engineering plastics and composite materials. Antioxidant antioxidants for rubber and plastics. Dye intermediates or petroleum products stabilizer.생산 방법
4,4'-Biphenol can be synthesized in excellent yields by debutylation of 3,3',5,5'-tetra-tert-butyl-4,4'-dihydroxybiphenyl. Other production processes are the alkaline fusion of 4,4'-biphenyldisulfonic acid, the boil down of benzidinebisdiazonium salts, and the decarboxylation of 4,4'-dihydroxybiphenyl-2-carboxylic acid. Symmetrically alkylated 4,4'-dihydroxybiphenyls such as 4,4'-dihydroxy-2,2',3,3',5,5',6,6'-hexamethylbiphenyl are preferably obtained by the oxidative coupling of the corresponding substituted monophenols. Here, diphenoquinones are generally formed in the first step which must be reduced. Phenol itself always gives isomeric mixtures of dihydroxybiphenyls on coupling with various oxidants. These mixtures are also formed by alkaline fusion of 4,4'-dihydroxybiphenylsulfone.정의
ChEBI: A member of the class of hydroxybiphenyls that is biphenyl with hydroxy groups at positions 4 and 4'.Safety Profile
Poison by intraperitoneal route.Moderately toxic by skin contact. Mildly toxic byingestion. Human mutation data reported. When heated todecomposition it emits acrid smoke and irritating fumes.Purification Methods
Recrystallise the biphenol from aqueous EtOH preferably under N2 to avoid oxidation to the extended qiunone. It is characterized as the dimethyl derivative (4,4’-dimethoxybiphenyl) from which it is prepared by demethylation. The dimethoxy derivative has m 176.5-177o (from AcOH, EtOH, hexane or *C6H6) and sublimes in vacuo. [Williamson & Rodebush J Am Chem Soc 63 3019 1941, Beilstein 6 I 485, 6 II 962, 6 III 6389, 6 IV 6651.]4-4'-다이하이드록시디페닐 준비 용품 및 원자재
원자재
4,4'-Bis(trimethylsilyloxy)biphenyl
6,6'-DI-TERT.BUTYL-4,4'-BI-ORTHO-CRESOL
4-HYDROXY-4'-METHOXYBIPHENYL
4,4'-Dimethoxybiphenyl
3,3',5,5'-TETRA(TERT-BUTYL)[1,1'-BIPHENYL]-4,4'-DIOL
4-Hydroxy-4'-fluorobiphenyl
4,4'-Difluorobiphenyl
클로로(4-)플로로벤젠
4-브로모페놀
준비 용품
4-4'-다이하이드록시디페닐 공급 업체
글로벌( 507)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Jiangxi Huihe Chemical Co., Ltd. | +86-19189228086 +8618858568638 |
wuzhouding@huihecrop.com | China | 886 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12453 | 58 |
Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 |
info@fdachem.com | China | 7377 | 58 |
Hebei Saisier Technology Co., LTD | +86-18400010335 +86-13102810335 |
admin@hbsaisier.cn | China | 424 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
sales@capotchem.com | China | 29797 | 60 |
Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 |
info@dakenam.com | China | 15371 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21695 | 55 |
Hangzhou FandaChem Co.,Ltd. | 008657128800458; +8615858145714 |
fandachem@gmail.com | China | 9352 | 55 |
ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 |
ivan@atkchemical.com | China | 32480 | 60 |
career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |