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http://chemicalland21.com/lifescience/foco/BETA-CAROTENE.htm
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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