디에틸말산

디에틸말산
디에틸말산 구조식 이미지
카스 번호:
141-05-9
한글명:
디에틸말산
동의어(한글):
디에틸말산;말레산다이에틸;디에틸말산;다이에틸말리에이트
상품명:
Diethyl maleate
동의어(영문):
DEM;Staflex DEM;ETHYL MALEATE;iethylmaleate;DIETHYL MALEATE;Diethyl malcate;DiethylMaleate>Diethylbutenedioate;Maleic acid diethyl;Diethyl Maleate 97%
CBNumber:
CB5772427
분자식:
C8H12O4
포뮬러 무게:
172.18
MOL 파일:
141-05-9.mol
MSDS 파일:
SDS

디에틸말산 속성

녹는점
-10 °C (lit.)
끓는 점
225 °C (lit.)
밀도
1.064 g/mL at 25 °C (lit.)
증기 밀도
5.93 (vs air)
증기압
1 mm Hg ( 14 °C)
굴절률
n20/D 1.441(lit.)
인화점
200 °F
저장 조건
Sealed in dry,Room Temperature
용해도
14mg/L
물리적 상태
액체
색상
투명한
냄새
100.00%에서. 과일 바나나 감귤류
?? ??
과일 같은
수용성
불용성
Merck
14,3123
BRN
1100825
Dielectric constant
8.6(23℃)
안정성
안정적인. 타기 쉬운. 산화제, 염기, 산, 환원제와 호환되지 않습니다.
InChIKey
IEPRKVQEAMIZSS-AATRIKPKSA-N
LogP
2.2
CAS 데이터베이스
141-05-9(CAS DataBase Reference)
NIST
2-Butenedioic acid (Z)-, diethyl ester(141-05-9)
EPA
2-Butenedioic acid (2Z)-, 1,4-diethyl ester (141-05-9)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi
위험 카페고리 넘버 36-43-52/53
안전지침서 26-36/37-37-24-24/25
유엔번호(UN No.) 3334
WGK 독일 2
RTECS 번호 ON1225000
자연 발화 온도 662 °F
TSCA Yes
HS 번호 29171990
독성 LD50 orally in rats: 0.30 g/kg (Smyth)
기존화학 물질 KE-03934
그림문자(GHS): GHS hazard pictograms
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H317 알레르기성 피부 반응을 일으킬 수 있음 피부 과민성 물질 구분 1 경고 GHS hazard pictograms P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H412 장기적 영향에 의해 수생생물에 유해함 수생 환경유해성 물질 - 만성 구분 3 P273, P501
예방조치문구:
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
NFPA 704
1
0

디에틸말산 MSDS


Diethyl maleate

디에틸말산 C화학적 특성, 용도, 생산

화학적 성질

Diethyl maleate is a colorless clear liquid between the temperatures of -10°C (pour point) and 225°C (boiling point). Insoluble in water, soluble in ethanol and ether. its odor type is fruity and its odor at 100% is described as "fruity bananacitrus". It is prohibited by lFRA and theEU because of sensitization and is notused anymore as fragrance.

출처

Has apparently not been reported to occur in nature.

용도

Diethyl maleate can be used for the preparation of organophosphorus insecticide malathion. It is unsaturated polyester resins that are used in applications, such as reinforced glass fiber for boats, piping, bathtubs, roof panels, etc., and as protective coatings, finishes, and lacquers.

정의

ChEBI: Diethyl maleate is a maleate ester resulting from the formal condensation of both carboxy groups of maleic acid with ethanol. A colourless liquid at room temperature (m.p. -10℃) with boiling point 220℃ at 1 atm., it is commonly used as a dienophile for Diels-Alder-type cycloaddition reactions in organic synthesis. It has a role as a glutathione depleting agent. It is a maleate ester and an ethyl ester. It derives from an ethanol.

제조 방법

Diethyl maleate is synthesized by the direct esterification of maleic anhydride and ethanol in the presence of sulfuric acid. Esterification is a commonly used reaction in organic synthesis.

일반 설명

Diethyl maleate is reported to occur in the cabernet sauvignon wine.

Synthesis

5g maleic anhydride, 12g dehydrated alcohol, 0.3g acid zeolite, 15ml benzene are added to the reaction vessel, install water trap, reflux condensing tube, and thermometer on the reaction vessel, reflux water-dividing is carried out in heating, reaction reacts 30min again after occurring without the globule, stops heating, after normal temperature cooling 30min, release water layer, reaction solution washes with water, distill after drying, first steam front-end volatiles, the cut regathering 216 ~ 220 DEG C is product Diethyl maleate.

신진 대사

α/β-Unsaturated compounds, such as diethyl maleate, react enzymically with gluta thione. The reaction has been demonstrated in fractions of rat liver (Boyland & Chasseaud, 1967) and avian liver (Wit & Snel, 1968). The enzyme differs from other known S-alkyl, S-aryl and S- epoxide transferase enzymes responsible for glutathione-conjugate formation (Boyland & Chasseaud, 1967). Diethyl maleate, administered parenterally to rats, reduced the hepatic glutathione content (Boyland & Chasseaud, 1970; Varga, Fischer & Szily, 1974). The latter workers also showed that diethyl maleate pretreatment of rats inhibited the glutathione conjugation of subsequently-adminis tered bromsulphthalein.

디에틸말산 준비 용품 및 원자재

원자재

준비 용품


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