CAS472-61-7
FormulaC40H52O4
Synonym3,3'-dihydroxy-ร-carotene-4,4'-dione, 3,3'-Dihydroxy-beta,beta-carotene-4,4'-dione
StabilityIn its original packing, this product will keep its properties for over 36 months at 4C below.
Ash<= 1%
Heavy Metals<= 10 ppm (USP method)
Total Molds and Yeasts (per g)<= 100 cfu/g
Staphylococcus aureusNegative
AppearanceDark red viscous oleoresin
SolubilityLipid soluble
Cadmium<= 0.5 ppm
SalmonellaNegative
Readily Solublein pyridine, from which it can be crystallized by addition of water
Assay>= 5%
Pb<= 2 ppm
As<= 1 ppm
Hg<= 0.1 ppm
Total Plate Count<= 1000 cfu/g
E ColiNegative
ContentNatural Astaxanthin extracted from H.pluvalis by supercritical CO2 extraction
Moisture<= 5% (Karl Fischer)
Melting Point182-183 c
Molecular weight596.85










