12-Crown-4
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12-Crown-4 속성
- 녹는점
- 16 °C (lit.)
- 끓는 점
- 61-70 °C/0.5 mmHg (lit.)
- 밀도
- 1.089 g/mL at 25 °C (lit.)
- 굴절률
- n
20/D 1.463(lit.)
- 인화점
- >230 °F
- 저장 조건
- Keep in dark place,Sealed in dry,Room Temperature
- 물리적 상태
- 녹은 후에 액체
- Specific Gravity
- 1.115 (20℃)
- 색상
- 무색투명~미황색
- 수용성
- 혼용 가능
- 감도
- Air Sensitive
- BRN
- 1363064
- CAS 데이터베이스
- 294-93-9(CAS DataBase Reference)
- NIST
- 12-Crown-4(294-93-9)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | T+,Xn,Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 26-36/37/38-20/21/22 | ||
| 안전지침서 | 28-36/37-45-36-26 | ||
| 유엔번호(UN No.) | UN 2810 | ||
| WGK 독일 | 3 | ||
| RTECS 번호 | XF0550000 | ||
| F 고인화성물질 | 3-9-23 | ||
| TSCA | Yes | ||
| 위험 등급 | 6.1 | ||
| 포장분류 | III | ||
| HS 번호 | 29329995 | ||
| 독성 | LD50 oral in rat: 2830mg/kg |
12-Crown-4 C화학적 특성, 용도, 생산
화학적 성질
clear colorless to slightly yellow liquid after용도
12-Crown-4 can be used as:- A promoter in the synthesis of poly(diethylsiloxane) (PDES) from monomer hexaethylcyclotrisiloxane using NaOH as a catalyst via anionic ring-opening polymerization.
- As an additive in the preparation of triarylmethane derivatives by palladium-catalyzed cross coupling reaction of aryl bromides with diarylmethane derivatives.
- A phase transfer catalyst in organic synthesis.
정의
ChEBI: A crown ether that is cyclododecane in which the carbon atoms at positions 1, 4, 7 and 10 have been replaced by oxygen atoms.일반 설명
12-Crown-4 is a crown ether generally used as a ligand in coordination chemistry. It is also known as lithium ionophore because of its strong chelating property specific to lithium cation.Purification Methods
The distilled crude product has to be recrystallised from pentane at -20o to remove acyclic material. It is then dried over P2O5. It complexes Li. [Anet et al. Acta Chem Scand 27 3395 1973, Beilstein 19/11 V 334.]12-Crown-4 준비 용품 및 원자재
원자재
준비 용품
12-Crown-4 공급 업체
글로벌( 201)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 |
info@dakenam.com | China | 15928 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21691 | 55 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 |
ivan@atkchemical.com | China | 32480 | 60 |
| Shanghai Zheyan Biotech Co., Ltd. | 18017610038 |
zheyansh@163.com | CHINA | 3620 | 58 |
| career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 |
sales@amoychem.com | China | 6387 | 58 |
| Chongqing Chemdad Co., Ltd | +86-023-61398051 +8613650506873 |
sales@chemdad.com | China | 39916 | 58 |
| Guangzhou Yuheng Pharmaceutical Technology Co., Ltd | +8613580539051 |
joe@yuhengpharm.com | CHINA | 21149 | 58 |
| SIMAGCHEM CORP | +86-13806087780 |
sale@simagchem.com | China | 17367 | 58 |
12-Crown-4 관련 검색:
사이클렌 테트라하이드로클로라이드 사이클렌
1,7-DIAZA-12-CROWN-4,4,10-DIAZA-12-CROWN 4-ETHER
BIS[(12-CROWN-4)METHYL] DODECYLMETHYLMALONATE
2-(HYDROXYMETHYL)-12-CROWN 4-ETHER
1-AZA-12-CROWN 4-ETHER,1-AZA-12-CROWN-4,AZA-12-CROWN-4,aza-12-crown-499.5+%
BENZO-12-CROWN-4,BENZO-12-CROWN 4-ETHER,Benzo-12-crown-4, 99+%,BENZO-12-CROWN-4 98+%
1-aza-12-crown-5
TETRAAZA-12-CROWN-4-1,4,7,10-TETRAACETIC ACID,TETRAAZA-12-CROWN-4 TETRAACETIC ACID AMMONIUM SALT (SEE 2923)
CYCLODODECANE
N-METHYLAZA-12-CROWN-4
4-TERT-BUTYL-CALIX[4]ARENE-CROWN-4-COMPLEX
1-BENZYL-1-AZA-12-CROWN-4,N-BENZYLAZA-12-CROWN-4
TETRAAZA-12-CROWN-4 TETRAHYDROGENSULFATE
12-Crown-4
Cyclohexyl-12-crown-4
Tetraaza 12-crown-4-tetraacetic acid derivative
BIS[(12-CROWN-4)METHYL] 2,2-DIDODECYLMALONATE