4-Hydroxybenzoic acid CAS 99-96-7
4-Hydroxybenzoic acid, yomwe imadziwikanso kuti nipagin ester, imagwiritsidwa ntchito kwambiri mu soya sauce, jamu, zakumwa zotsitsimula, ndi zina zotero. Ndi ufa wopanda mtundu wa kristalo kapena woyera, wopanda fungo komanso wopanda kukoma. Mphamvu yake yoletsa dzimbiri ndi yabwino kuposa benzoic acid ndi mchere wake wa sodium, yokhala ndi pafupifupi 1/10 ya sodium benzoate ndipo pH imagwiritsidwa ntchito kuyambira 4 mpaka 8.
| Chinthu | Kufotokozera |
| Malo otentha | 213.5°C (kuyerekezera koyenera) |
| Kuchulukana | 1,46 g/cm3 |
| Malo osungunuka | 213-217 °C (lit.) |
| Kupanikizika kwa nthunzi | 0Pa pa 20℃ |
| kukana | 1.4600 (chiyerekezo) |
| Malo osungiramo zinthu | Sungani pansi pa +30°C. |
4-Hydroxybenzoic acid imagwiritsidwa ntchito makamaka ngati zinthu zoyambira zopangira mankhwala abwino, pomwe ma parabens, omwe amadziwikanso kuti p-hydroxybenzoic acid esters, akhala akugwiritsidwa ntchito kwambiri ngati zosungira zakudya, mankhwala, ndi zodzoladzola. Amagwiritsidwanso ntchito kwambiri popanga utoto wosiyanasiyana, fungicides, filimu ya utoto, ndi mitundu yosiyanasiyana ya utoto wosungunuka ndi mafuta. Polyester yatsopano ya polymer p-hydroxybenzoic acid yolimba kutentha kwambiri, yomwe imagwiritsidwa ntchito mosiyanasiyana, imagwiritsidwanso ntchito ngati zinthu zoyambira.
Kawirikawiri amanyamula mu 25kg/ng'oma, ndipo amathanso kupangidwa mwamakonda.
4-Hydroxybenzoic acid CAS 99-96-7
4-Hydroxybenzoic acid CAS 99-96-7
