포타슘터셔리부톡사이드
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포타슘터셔리부톡사이드 속성
- 녹는점
- 256-258 °C (dec.) (lit.)
- 끓는 점
- 275°C
- 밀도
- 0.910 g/mL at 20 °C
- 증기압
- 1 mm Hg ( 220 °C)
- 인화점
- 54 °F
- 저장 조건
- Store below +30°C.
- 용해도
- 헥산, 톨루엔, 디에틸 에테르 및 테라히드로푸란에 용해됩니다.
- 산도 계수 (pKa)
- pK1:18(25°C)
- 물리적 상태
- 액체
- 색상
- 흰색에서 황백색까지
- Specific Gravity
- 0.902
- 수소이온지수(pH)
- 13 (5g/l, H2O, 20℃)Hydrolysis
- 수용성
- 물과 반응
- 감도
- Moisture Sensitive
- Hydrolytic Sensitivity
- 7: reacts slowly with moisture/water
- BRN
- 3556712
- 안정성
- 안정적이지만 물과 산과 격렬하게 반응하여 화재를 일으킬 수 있음. 물, 산, 할로겐화 탄화수소, 알코올, 강산화제, 케톤, 이산화탄소와 호환되지 않습니다.
- InChIKey
- LPNYRYFBWFDTMA-UHFFFAOYSA-N
- CAS 데이터베이스
- 865-47-4(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | F,C,Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 11-19-22-34-35-14-20-36/37-37 | ||
| 안전지침서 | 16-26-36/37/39-43-45-7/9-8-43A-33-27-29 | ||
| 유엔번호(UN No.) | UN 3274 3/PG 2 | ||
| WGK 독일 | 1 | ||
| F 고인화성물질 | 10-21 | ||
| 자연 발화 온도 | 483 °C | ||
| 위험 참고 사항 | Flammable solid/Corrosive | ||
| TSCA | Yes | ||
| 위험 등급 | 8 | ||
| 포장분류 | I | ||
| HS 번호 | 29051900 | ||
| 기존화학 물질 | KE-24897 |
포타슘터셔리부톡사이드 C화학적 특성, 용도, 생산
안전성
건강 3, 화재 2, 반응성 1화재 및 폭발위험 인화성/가연성 물질.
열, 스파크 또는 화염에 의해 점화될 수 있음.
가열시, 증기는 공기와 결합하여 폭발성 혼합물을 형성할 수 있음 : 실내외 및 하수구 폭발 위험성.
금속과의 접촉시 인화성 수소 가스를 방출할 수 있음.
용기는 가열되면 폭발할 수 있음.
자연연소를 일으키는 공기와 접촉시 점화할 수 있음.
가열 또는 화재시 폭발적으로 분해될 수 있음.
포장, 보관 및 운송
통풍환기가 잘 되는 건조한 냉소에 보관한다. 가연성 물질과는 격리하여야 한다.아르곤이나 질소 같은 불활성 기체상태 하에서 저장할 것
화학적 성질
white crystalline powder용도
Potassium tert-Butoxide is used in the synthesis of many organic compounds primarily as a strong base. In particular, it is used as a reagent in the base- catalyzed carbonylation of amines for the synthesis of N-Formamides.일반 설명
This product has been enhanced for catalytic efficiency.화재위험
Potassium tert-butoxide is a flammable solid. It ignites on heating. Being very strongly basic, its reactions with acids are highly exothermic. Contact of solid powder with drops of sulfuric acid and vapors of acetic acid caused ignition after an induction period of 0.5 and 3 minutes, respectively (Manwaring 1973). Ignition occurs upon reactions with many common solvents of the type ketone, lower alcohols, esters, and halogenated hydrocarbons. Such solvents include acetone, methyl ethyl ketone, methyl isobutyl ketone, methanol, ethanol, n-propanol, isopropanol, ethyl acetate, n-propyl formate, n-butyl acetate, chloroform, methylene chloride, carbon tetrachloride, epichlorohydrin, dimethyl carbonate, and diethyl sulfate (NFPA 1997). Such ignition may arise from accidental contact of the alkoxide with these solvents and may be attributed to sudden release of energy from exothermic reactions. However, slow mixing of the powder with excess solvent will dissipate the heat. It reacts violently with water, producing tert-butanol and potassium hydroxide, as follows:K―OC―(C4H9)3＋H2O → tert-C4H9OH +KOH
The addition of potassium tert-butoxide to the solvent dimethyl sulfoxide can cause ignition of the latter (Bretherick 1995).
Purification Methods
It sublimes at 220o/1mm. The last traces of tert-BuOH are removed by heating at 150-160o/2mm for 1hour. It is best prepared afresh as likely impurities are tert-BuOH, KOH and K2CO3 depending on its exposure to air. Its solubility at 25-26o in hexane, toluene, Et2O, and THF is 0.27%, 2.27%, 4.34% and 25.0%, respectively. [Feuer et.al. J Am Chem Soc 78 4364, Doering & Urban J Am Chem Soc 78 5938 1956, Beilstein 1 IV 1612.]포타슘터셔리부톡사이드 준비 용품 및 원자재
원자재
준비 용품
2,4-DICHLORO-5-NITROPYRIDINE
3,5-다이메틸-1-헥신-3-올
ETHYL 5-NITROBENZOFURAN-2-CARBOXYLATE
ISOXAZOLO[5,4-B]PYRIDIN-3-YLAMINE
1-CHLORO-4-ISOCYANOBENZENE
5-CHLOROBENZOFURAN-2-CARBOXYLIC ACID
2-(2-(Diphenylphosphino) 에틸) pyridine
1-(3-(4-AMINO-2,6-DICHLOROPHENOXY)PROPYL)PYRROLIDIN-2-ONE
Ethyl 2-oxocyclopentanecarboxylate
5-Methoxybenzofuran-2-carboxylic acid
1-에틴일시클로헥산올
5-NITRO-2-HYDROXY-4-METHOXYPYRIDINE
4-NITRO-PYRIDIN-3-YLAMINE
2-(DIPHENYLPHOSPHINO)ETHYLTRIETHOXYSILANE
Epoprostenol
5-(2-ETHOXYPHENYL)-1-METHYL-3-N-PROPYL-1,6-DIHYDRO-7H-PYRAZOLO[4,3-D]-7-PYRIMIDINONE
5-NITROBENZOFURAN-2-CARBOXYLIC ACID
5-CHLORO-BENZOFURAN-2-CARBOXYLIC ACID ETHYL ESTER
5-N-PROPYLURACIL
Stavudine
Tacalcitol
ETHYL 7-METHOXYBENZOFURAN-2-CARBOXYLATE
4-PYRIDIN-2-YLISOXAZOL-5-AMINE
4-Morpholinophenylboronic acid
5-METHOXYBENZOFURAN-2-CARBOXYLIC ACID, ETHYL ESTER
9-에틸-3-nitrocarbazole
Rimonabant hydrochloride
4-CHLORO-8-FLUORO-5H-PYRIMIDO[5,4-B]INDOLE
1-ethynyl-4-tert-butyl-cyclohexan-1-ol
Sertraline hydrochloride
2-(ETHYLTHIO)NICOTINIC ACID
3-Amino-1,2-benzisoxazole
테트라키스-[메틸렌 3-(3`,5`-디-t-부틸-4`-하이드록시페닐)프로피오네이트]메탄
6-Chlorooxindole
quinuclidine-3-carboxylic acid
PYRIDINE-2,3,6-TRIAMINE
1R-cis crysanthemic acid
4-CYANO-4-(4-FLUOROPHENYL)CYCLOHEXANONE
레트로졸
1-(3-Hydrazinylpropyl)pyrrolidin-2-one
포타슘터셔리부톡사이드 공급 업체
글로벌( 743)공급 업체
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