Methyl Paraben
Diazolidinyl Urea yog ib qho dej-soluble tshuaj tua kab mob, feem ntau nta raws li kev nyab xeeb, kev ua haujlwm siab, dav-spectrum tshuaj tua kab mob thiab siv dav hauv kev lag luam Pharmacy (Suav tshuaj ntsuab / tshuaj patent; cov cuab yeej kho mob kom tsis muaj menyuam); Khoom noj khoom haus kev lag luam (cov khoom noj mis nyuj, pickles, dej haus, kua txiv hmab txiv ntoo / jelly, confectionery); Kev lag luam textile (cov khoom qhuav, paj rwb xov paj, tshuaj fiber ntau), nrog rau cov tshuaj tua kab mob hauv cov tshuaj pleev ib ce, khoom noj khoom haus, tshuaj txhua hnub.
Tseem ceeb Technical Parameters:
| Qhov tshwm sim | hmoov dawb |
| Purity (hauv paus qhuav), % | 98-102 : kuv |
| Melting point, ℃ | 125-128 ib |
| Poob ntawm ziab,% | ≤0.5 |
| Residue ntawm ignition,% | ≤0.1 |
| Acidity | mus txog tus qauv |
| 4-Hydroxybenzoic acid thiab salicylic acid | mus txog tus qauv |
| Solubility | yooj yim soluble hauv cawv, ether thiab acetone, maj mam soluble hauv dej |
Daim ntawv thov:
● Kev sau npe thoob ntiaj teb, tsis muaj kev txhawb nqa ntawm qhov muag, tawv nqaij thiab mucosa
● Siv dav hauv tshuaj pleev ib ce, kev kho mob thiab kev lag luam zaub mov
● Muab: 0.2 ~ 0.5%
● pH ntau rau daim ntawv thov: 4 ~ 8
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