Salicylic acid CAS 69-72-7
| Catalog Number | xwm 92029 |
| Khoom npe | Salicylic acid |
| CAS | 69-72-7 ib |
| Molecular Formula | C7H6O3 |
| Molecular Luj | 138.12 Nws |
| Cov ntaub ntawv khaws cia | 2-8 ° C |
| Harmonized tariff Code | 29182100 ib |
Khoom Specification
| Qhov tshwm sim | Dawb mus rau dawb hmoov |
| Assay | 99% min |
| Melting point | 158-161 ° C (lit.) |
| Boiling point | 211 ° C (lit.) |
| ceev | 1.44 ib |
| vapor ceev | 4.8 (vs huab cua) |
| vapor siab | 1 hli Hg (114 ° C) |
| Refractive Index | 1,565 ib |
| Fp | 157 ° C |
| solubility | ethanol: 1 M ntawm 20 ° C, ntshiab, tsis muaj xim |
| pka ua | 2.98 (ntawm 25 ℃) |
| PH | 2.4 (H2O) (saturated tov) |
| PH Range | Tsis yog 0 uorescence (2.5) rau tsaus xiav 0 uorescence (4.0) |
| Dej Solubility | 1.8 g / L (20 ºC) |
| lw max | 210nm, 234nm, 303nm |
| rhiab heev | Lub teeb Sensitive |
| Sublimation | 70 ºC kub |
Salicylic acid yog FDA pom zoo cov khoom tu tawv nqaij siv rau kev kho mob pob txuv, thiab nws tsuas yog beta hydroxy acid (BHA) siv hauv cov khoom tu tawv nqaij.Zoo meej rau cov tawv nqaij oily, salicylic acid yog qhov paub zoo tshaj plaws rau nws lub peev xwm los ntxuav cov roj ntau dhau ntawm qhov hws thiab txo cov roj ntau lawm.Vim tias salicylic acid ua kom cov pores huv si thiab tsis txhaws, nws tiv thaiv cov taub hau dawb thiab blackheads yav tom ntej.Salicylic acid kuj exfoliates cov tawv nqaij tuag, thiab nws cov khoom tiv thaiv kab mob ua rau nws muaj txiaj ntsig zoo rau cov neeg mob psoriasis.Salicylic acid ib txwm tshwm sim nyob rau hauv willow bark, qab zib birch bark, thiab wintergreen nplooj, tab sis hluavtaws versions kuj siv nyob rau hauv cov khoom tu tawv nqaij.
