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비타민E

비타민E
비타민E 구조식 이미지
카스 번호:
10191-41-0
한글명:
비타민E
동의어(한글):
비타민E;토코페롤;3,4-다이하이드로-2,5,7,8-테트라메틸-2-(4,8,12-트라이메틸트 라이데실)-2H-벤조피란-6-올
상품명:
DL-α-Tocopherol
동의어(영문):
3,;8-(4;ecyl)-;ephanyl;TGF-β-3;hTGF-β3;A-TOCOPHEROL;DL-VITAMIN E;4-BroMo-2-(5;FIIN-​
CBNumber:
CB5275357
분자식:
C29H50O2
포뮬러 무게:
430.71
MOL 파일:
10191-41-0.mol

비타민E 속성

녹는점
2-4°C
알파
[α]D20 - 0.02 - +0.02゜ (neat)
끓는 점
200-220°C 0,1mm
밀도
0.950 g/mL at 20 °C(lit.)
굴절률
n20/D 1.506
인화점
240°C
저장 조건
2-8°C
용해도
H2O: insoluble
산도 계수 (pKa)
11.40±0.40(Predicted)
물리적 상태
Pale yellow oil
수용성
Miscible with chloroform, vegetable oils, ether, acetone and alcohol. Immiscible with water.
감도
Light Sensitive
Merck
14,9495
BRN
94012
InChIKey
GVJHHUAWPYXKBD-IEOSBIPESA-N
CAS 데이터베이스
10191-41-0(CAS DataBase Reference)
EPA
2H-1-Benzopyran-6-ol, 3,4-dihydro-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecyl)- (10191-41-0)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi,T,F
위험 카페고리 넘버 36/37/38-39/23/24/25-23/24/25-11
안전지침서 26-37/39-45-36/37-16-7
유엔번호(UN No.) UN1230 - class 3 - PG 2 - Methanol, solution
WGK 독일 1
RTECS 번호 GA8746000
F 고인화성물질 8-10-23
TSCA Yes
HS 번호 29362800
유해 물질 데이터 10191-41-0(Hazardous Substances Data)
기존화학 물질 98-3-1010
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H225 고인화성 액체 및 증기 인화성 액체 구분 2 위험 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H370 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴(노출되어도 특정 표적장기 독성을 일으키지 않는다는 결정적인 노출경로가 있다면 노출경로를 기재) 특정 표적장기 독성 - 1회 노출 구분 1 위험 P260, P264, P270, P307+P311, P321,P405, P501
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P403+P235 환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.

비타민E C화학적 특성, 용도, 생산

개요

비타민E는 지용성 비타민의 일종으로, 4종의 토코페롤(알파토코페롤, 베타토코페롤, 감마토코페롤, 델타토코페롤)과 4종의 토코트리에놀(알파토코트리에놀, 베타토코트리에놀, 감마토코트리에놀, 델타토코트리에놀) 성분으로 구성되어 있다.

용도

각종 독소와 발암물질(수은, 납, 오존, 아산화질소)로부터 인체를 지켜준다. 혈관의 탄력을 유지하고 생체막에서 지방질(LDL)의 산화를 억제해서 세포막을 산화시키지 않으려는 작용을 하는 강력한 항산화물질이다. 또한, 적혈구 보호, 세포호흡, 헴 합성 및 혈소판 응집에 관여한다.

화학적 성질

1mg = 1.1 IU

화학적 성질

Alpha tocopherol is a natural product. The PhEur 6.0 describes alpha-tocopherol as a clear, colorless or yellowish-brown, viscous, oily liquid.

용도

dl-α-Tocopherol is the racemic analog of α-Tocopherol (T526125), the most bioactive of the naturally occurring forms of Vitamin E. Richest sources are green vegetables, grains, and oils, particularly palm, safflower and sunflower oils. dl-α-Tocopherol is an antioxidant that protects cell membrane lipids from oxidative damage.

생산 방법

Naturally occurring tocopherols are obtained by the extraction or molecular distillation of steam distillates of vegetable oils; for example, alpha tocopherol occurs in concentrations of 0.1–0.3% in corn, rapeseed, soybean, sunflower, and wheat germ oils.Beta and gamma tocopherol are usually found in natural sources along with alpha tocopherol. Racemic synthetic tocopherols may be prepared by the condensation of the appropriate methylated hydroquinone with racemic isophytol.

Pharmaceutical Applications

Alpha tocopherol is primarily recognized as a source of vitamin E, and the commercially available materials and specifications reflect this purpose. While alpha tocopherol also exhibits antioxidant properties, the beta, delta, and gamma tocopherols are considered to be more effective as antioxidants.
Alpha-tocopherol is a highly lipophilic compound, and is an excellent solvent for many poorly soluble drugs.Of widespread regulatory acceptability, tocopherols are of value in oil- or fat-based pharmaceutical products and are normally used in the concentration range 0.001–0.05% v/v. There is frequently an optimum concentration; thus the autoxidation of linoleic acid and methyl linolenate is reduced at low concentrations of alpha tocopherol, and is accelerated by higher concentrations. Antioxidant effectiveness can be increased by the addition of oil-soluble synergists such as lecithin and ascorbyl palmitate.
Alpha tocopherol may be used as an efficient plasticizer. It has been used in the development of deformable liposomes as topical formulations.
d-Alpha-tocopherol has also been used as a non-ionic surfactant in oral and injectable formulations.

Safety

Tocopherols (vitamin E) occur in many food substances that are consumed as part of the normal diet. The daily nutritional requirement has not been clearly defined but is estimated to be 3.0–20.0 mg. Absorption from the gastrointestinal tract is dependent upon normal pancreatic function and the presence of bile. Tocopherols are widely distributed throughout the body, with some ingested tocopherol metabolized in the liver; excretion of metabolites is via the urine or bile. Individuals with vitamin E deficiency are usually treated by oral administration of tocopherols, although intramuscular and intravenous administration may sometimes be used.
Tocopherols are well tolerated, although excessive oral intake may cause headache, fatigue, weakness, digestive disturbance, and nausea. Prolonged and intensive skin contact may lead to erythema and contact dermatitis.
The use of tocopherols as antioxidants in pharmaceuticals and food products is unlikely to pose any hazard to human health since the daily intake from such uses is small compared with the intake of naturally occurring tocopherols in the diet.
The WHO has set an acceptable daily intake of tocopherol used as an antioxidant at 0.15–2.0 mg/kg body-weight.

저장

Tocopherols are oxidized slowly by atmospheric oxygen and rapidly by ferric and silver salts. Oxidation products include tocopheroxide, tocopherylquinone, and tocopherylhydroquinone, as well as dimers and trimers. Tocopherol esters are more stable to oxidation than the free tocopherols but are in consequence less effective antioxidants.
Tocopherols should be stored under an inert gas, in an airtight container in a cool, dry place and protected from light.

Purification Methods

Dissolve dl--tocopherol in anhydrous MeOH (15mL/g) cool to -6o for 1hour, then chill in a Dry-ice/acetone bath; crystallisation is induced by scratching with a glass rod. The dl--acetate [52225-20-4] (see DL-vitamin E actetate below) is a viscous yellow liquid with m -7o, b 184o/0.01mm, 224o/0.3mm, d 4 20 0.953, n D 20 1.496. It is used as a standard for Vitamin E activity where the unit of activity is attained with 1mg of pure dl--acetate. [Friedrich “Vitamins” Water de Guyter Publ, Berlin 1988, Beilstein 17/4 V 168.]

비 호환성

Tocopherols are incompatible with peroxides and metal ions, especially iron, copper, and silver. Tocopherols may be absorbed into plastic.

Regulatory Status

GRAS listed. Accepted in Europe as a food additive. Included in the FDA Inactive Ingredients Database (IV injections, powder, lyophilized powder for liposomal suspension; oral capsules, tablets, and topical preparations). Included in the Canadian List of Acceptable Non-medicinal Ingredients. Included in nonparenteral medicines licensed in the UK.

비타민E 준비 용품 및 원자재

원자재

준비 용품


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