나트륨 에톡시드
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나트륨 에톡시드 속성
- 녹는점
- 260 °C
- 끓는 점
- 91°C
- 밀도
- 0.868 g/mL at 25 °C
- 증기 밀도
- 1.6 (vs air)
- 증기압
- <0.1 mm Hg ( 20 °C)
- 굴절률
- n
20/D 1.386
- 인화점
- 48 °F
- 저장 조건
- Store at +15°C to +25°C.
- 용해도
- 에탄올과 메탄올에 용해됩니다.
- 물리적 상태
- 액체
- 색상
- 노란색에서 갈색으로
- Specific Gravity
- 0.868
- 수소이온지수(pH)
- 13 (5g/l, H2O, 20℃)
- 수용성
- 혼용 가능
- 감도
- Moisture Sensitive
- Hydrolytic Sensitivity
- 7: reacts slowly with moisture/water
- Merck
- 14,8539
- BRN
- 3593646
- 노출 한도
- ACGIH: STEL 1000 ppm
OSHA: TWA 1000 ppm(1900 mg/m3)
NIOSH: IDLH 3300 ppm; TWA 1000 ppm(1900 mg/m3)
- 안정성
- 산, 물과 격렬하게 반응함. 염소계 용제, 습기와 호환되지 않습니다. 공기 중 이산화탄소를 흡수합니다. 가연성이 높습니다.
- CAS 데이터베이스
- 141-52-6(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | F,C,Xi,N | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 11-14-34-36/37/38-68/20/21/22-51/53-20/21/22 | ||
| 안전지침서 | 8-16-26-43-45-36/37/39-36-61 | ||
| 유엔번호(UN No.) | UN 3274 3/PG 2 | ||
| WGK 독일 | 1 | ||
| F 고인화성물질 | 3-8-10-23 | ||
| 자연 발화 온도 | 30 - 50 °C | ||
| TSCA | Yes | ||
| 위험 등급 | 4.2 | ||
| 포장분류 | II | ||
| HS 번호 | 29051900 | ||
| 유해 물질 데이터 | 141-52-6(Hazardous Substances Data) | ||
| 독성 | LD50 orally in Rabbit: 598 mg/kg | ||
| 기존화학 물질 | KE-13223 |
나트륨 에톡시드 C화학적 특성, 용도, 생산
화학적 성질
White powder, sometimes having brownish tinge; readily hydrolyzes to alcohol and sodium hydroxide.물리적 성질
White or yellowish powder; hygroscopic; darkens and decomposes on exposure to air; decomposes in water forming sodium hydroxide and ethanol; dissolves in absolute ethanol.용도
Sodium ethoxide is used in organic synthesis for condensation reactions. It also is a catalyst in many organic reactions.제조 방법
Sodium ethoxide is prepared by reacting sodium with absolute ethanol:2Na + 2C2H5OH → 2C2H5ONa + H2
Sodium in small quantities is added to absolute alcohol at 10°C. The temperature is raised to warming (to about 38°C). The mixture is cooled again and sodium and absolute alcohol are added gradually followed by careful warming. The process is repeated to obtain a sufficient yield of the p
정의
ChEBI: An organic monosodium salt that has ethoxide as the counterion.일반 설명
Sodium ethoxide is an alkoxide salt mainly used as a strong base in organic reactions such as deprotonation, dehydration and dehalogenation.위험도
As for caustic soda, ethanol. Sodium hydroxide is formed when sodium ethylate is exposed to moisture.Purification Methods
It is a hygroscopic powder which should be stored under N2 in a cool place. A likely impurity is EtOH which can be removed by warming at 60-80o under high vacuum. It is hydrolysed by H2O to yield NaOH and EtOH. Other impurities, if kept in air for long periods are NaOH and Na2CO3. In this case the powder cannot be used if these impurities affect the reactivity, and a fresh sample should be acquired [IR: Seubold J Org Chem 21 156 1956]. [Beilstein 1 H 311, 1 IV 1289.]나트륨 에톡시드 준비 용품 및 원자재
원자재
준비 용품
Diethyl dipropylmalonate
Ethametsulfuron-methyl
Dimethyl ethylmalonate
트리암테렌
Diethyl isoamylmalonate
2-METHOXYPROPANDIOIC ACID ETHYL METHYL ESTER
ETHYL ISONICOTINOYLACETATE
메틸-3-메톡시피라진
2-HYDRAZINO-6-METHYLPYRIMIDIN-4-OL
2-ETHOXY-MALONIC ACID DIETHYL ESTER
2-METHYLUNDECANAL
2,4-DIETHOXYPYRIMIDINE
2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid
3-CARBETHOXY-2-PIPERIDONE
히드록실아민
2,4,6-TRIAMINO-5-NITROPYRIMIDINE
트윈20
메틸트라이에톡시실레인
P-AMINO-DL-PHENYLALANINE
Diethyl butylmalonate
UNICONAZOLE
글리클라지드
Cyclobutanemethanol
푸란-3-카르복실산
트윈 40
nony phenyl polyoxyethylene (50～150) ether
DIETHYL 2-(2-CYANOETHYL)MALONATE
2-Amino-4,6-dihydroxypyrimidine
4-TERT-BUTYL-2,6-DIMETHYL BENZYL ACETATE
트윈 80
NAFRONYL
Quinazoline, 2-methyl- (6CI,7CI,8CI,9CI)
4-(4-FLUOROBENZYLOXY)BENZALDEHYDE
TRIETHYL 1,1,2-ETHANETRICARBOXYLATE
2-(2-MORPHOLIN-4-YLETHOXY)ANILINE
3-아미노피롤리딘
메틸페닐글리시드산에틸
2-Ethoxythiazole
FEMA 2310
N4-Methylcytosine
나트륨 에톡시드 공급 업체
글로벌( 501)공급 업체
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