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beta-CAROTENE

PRODUCT IDENTIFICATIONCAS NO. 7235-40-7EINECS NO. 230-636-6FORMULA C40H56MOL WT. 536.90

H.S. CODE 2936.10TOXICITYSYNONYMS Trans-Beta-Carotene; Provatene; Provitamin A; Natural Yellow 26;,-caroteno (Spanish); beta,beta-carotene; 1,1'-(3,7,12,16-tetramethyl-1,3,5,7,9,11,13,15,17-Octadecanonaene-1,18-diyl) Bis(2,6,6-trimethyl-, (All-e)-Cyclohexene;DERIVATIONCLASSIFICATION NATURAL COLORANT /VITAMINS/ CAROTENOIDS /PHYSICAL AND CHEMICAL PROPERTIESPHYSICAL STATE red to brown powder or crystalsMELTING POINT 176 - 183 C (Decomposes)BOILING POINTSPECIFIC GRAVITYSOLUBILITY IN WATER insolublepHVAPOR DENSITYREFRACTIVE INDEXNFPA RATINGSAUTOIGNITIONFLASH POINTSTABILITY Stable under ordinary conditionsAPPLICATIONSCarotenoids are plant pigments that involve in light harvesting to participate in energy transferprocess in photosynthesis. They absorb light in the 400-500 nm region of the visible spectrum andimpart coloration of yellow, orange, red, and purple. They are widely distributed in nature including

vegetables, fruits, insects, fishes, and birds. Animals are incapable of synthesizing carotenoids,which should be obtained through diet. Chlorophyll is the generic name for green plant pigmentswhich includes the open-chain bile pigments and the large ring compounds. The structure ofchlorophyll molecule has four nitrogen-containing pyrrole rings bonded to a central magnesiumatom, and the fifth ring containing only carbon atoms, and various long hydrocarbon tailsattached to the pyrrole rings. Carotenoids contain sequences of conjugated isoprene units,

alternating double and single carbon bonds. They are sometimes terminated by cyclic end-groups(rings) complemented with hydroxylated, oxidized and hydrogenated groups. The conjugateddouble bonds absorbs light and UV. The more number of double bonds result in the absorbance ofred color wavelength. Changes in geometrical configuration about the double bonds result in theexistence of many cis- and trans- isomers. Carotenoids are usually located in quantity in the granaof chloroplasts in the form of carotenoprotein complexes which give blue, green, purple, red, orother colors to the outer surfaces in plants, or eggs of crustaceans, such as the lobster and crab.Carotenoids are classified into carotenes (un-oxidized carotenoids, orange pigments) orxanthophylls (yellow pigments) which contains oxygen and are alcohol-soluble. It is known thatmore than 600 carotenoids are isolated from natural sources.

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beta-Carotene Property

http://www.chemicalbook.com/ChemicalProductProperty_EN_CB4148267.htm

mp : 176-184 C (dec.)

Fp : 103 C

storage temp. : 20C

solubility : hexane: 100 g/mL, soluble

form : powder

color : red to purple

Merck : 1853

Stability:: Stable, but sensitive to air, heat and light. Store at -20C under nitrogen. Pyrophoric

CAS DataBase

Reference:7235-40-7(CAS DataBase Reference)

NIST Chemistry

Reference:beta Carotene(7235-40-7)

EPA Substance

Registry System:.beta.,.beta.-Carotene(7235-40-7)

Safety

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