Benzoic Acid 65-85-0
Khoom Description
benzoic acid C7H6O2 (los yog C6H5COOH), yog ib tug tsis muaj kob crystalline khoom thiab cov yooj yim aromatic carboxylic acid. Lub npe muab los ntawm cov pos hniav benzoin, uas tau ntev los ntawm tib lub hauv paus rau benzoic acid. Nws cov ntsev yog siv los ua zaub mov preservative thiab benzoic acid yog ib qho tseem ceeb precursor rau synthesis ntawm ntau lwm yam organic tshuaj. Cov ntsev thiab esters ntawm benzoic acid yog hu ua benzoates.
Specification
| Yam khoom | STANDARD |
| Yam ntxwv | Dawb crystallized hmoov |
| Cov ntsiab lus > =% | 99.5 ua |
| Melting point | 121-124 ℃ |
| Poob ntawm ziab =<% | 0.5 |
| sulfate = <% | 0.1 |
| Burnt residue =<PPM | 300 |
| Chlorides = <% | 0.02 ib |
| Heavy metals(As Pb) =<PPM | 10 |
| Arsenic = <% | 0.0003 |
| Lead =<ppm | 5 |
| Mercury = <ppm | 1 |
| Cov tshuaj oxidized | xeem dhau |
| Carbonisable khoom = | Y5 |
| Xim daws = | B9 |
