Vitamin A Cas: 11103-57-4
| Catalog Number | xwm 91861 |
| Khoom npe | Vitamin A |
| CAS | 11103-57-4 |
| Molecular Formula | C20H30O |
| Molecular Luj | 286.46 ib |
| Cov ntaub ntawv khaws cia | -20 ° C |
| Harmonized tariff Code | 300 450 000 |
Khoom Specification
| Qhov tshwm sim | daj-daj crystals |
| Assay | 99% min |
| solubility | Tag nrho cov retinol esters yog xyaum insoluble nyob rau hauv dej, soluble los yog ib nrab soluble nyob rau hauv anhydrous ethanol thiab miscible nrog organic solvents.Vitamin A thiab nws cov esters yog rhiab heev rau kev ua ntawm huab cua, oxidising cov neeg ua haujlwm, acids, lub teeb thiab kub.Ua qhov kev ntsuam xyuas thiab tag nrho cov kev ntsuam xyuas kom sai li sai tau, tsis txhob raug cov teeb pom kev zoo thiab huab cua, oxidising agents, oxidation catalysts (xws li tooj liab, hlau), acids thiab cua sov;siv cov kev daws teeb meem tshiab tshiab. |
Vitamin A tuaj yeem ua raws li kev tswj hwm keratinization, pab txhim kho daim tawv nqaij kev ntxhib los mos, firmness, thiab smoothness.Vitamin A esters, ib zaug hauv daim tawv nqaij, hloov mus rau retinoic acid thiab muab cov txiaj ntsig tiv thaiv kev laus.Vitamin A ntseeg tau tias yog qhov tseem ceeb rau kev tsim thiab kev ua haujlwm ntawm daim tawv nqaij.Txuas ntxiv vitamin A tsis muaj peev xwm qhia tau tias degeneration ntawm cov ntaub so ntswg dermal, thiab daim tawv nqaij ua tuab thiab qhuav.Daim ntawv thov ntawm vitamin A pab tiv thaiv cov tawv nqaij qhuav thiab scaliness, ua kom tawv nqaij noj qab haus huv, ntshiab, thiab tiv thaiv kab mob.Nws cov tawv nqaij regeneration zog tshwm sim thaum ua ke nrog vitamin E.Vitamin A yog ib qho tseem ceeb ntawm cov roj xws li cod siab thiab shark, thiab ntau ntses thiab zaub roj.Saib kuj retinol;retinoic acid;retinylpalmitate.
