Abathengisi Abahle Bezitolo ZaseShayina zeChromic Acid Flakes
Imininingwane
Okuhlelekile:CrO3
Umlingiswa:Ama-flakes abomvu ansundu, ancibilika emanzini ne-ether, anobuthi.
Ukusetshenziswa:Ukufakwa kukagesi, ukucwebezelisa, ukukhiqizwa kwe-chrome-metal, umbala, umuthi, i-catalyst, i-oxidant, ukugcinwa kwezinkuni, i-raw-material ye-crome oxide, njll.
Iphakheji:ku-UN kuvunywe izigubhu zensimbi ezingama-50kg noma 250kg inethi ngayinye.
Ukwenza amazinga:I-GB1610-1999.
| Izinto | Imininingwane | ||
| Ibanga A | Ibanga B | Ibanga C | |
| CrO3％≥ | 99.7 | 99.5 | 99.0 |
| Indaba engancibiliki emanzini％≤ | 0.02 | 0.05 | 0.10 |
| I-Sulphates (ama-sulfate) | 0.06 | 0.15 | 0.30 |
| Na％≤ | 0.05 | - | - |
Indlela yokuhlaziya
Ukunqunywa kokuqukethwe kwe-chromic acid emoyeni: isampula laqoqwa ngesihlungi, lancibilika ku-sulfuric acid, bese kunqunywa i-Colorimetry (indlela ye-NIOSH) ngemva kokwengeza i-diphenylcarbazide.
Ukunqunywa kokuqukethwe kwe-chromic acid emanzini: isampuli ikhishwa futhi inqunywe i-atomic absorption spectrometry noma i-colorimetry.
Indlela yokulahla imfucuza: ngemva kokwehliswa kwamakhemikhali, uketshezi lwemfucumfucu ye-chromic acid egxilile lushintsha lube yi-chromium e-trivalent, futhi inani le-pH lesixazululo liyalungiswa ukuze libe imvula, futhi inzika igcwaliswa njengodoti wamakhemikhali.
Inhloso
I-Chromic acid iyisisombululo esivame kakhulu sokuhlanza esisetshenziswa elabhorethri.Inakho kokubili i-acidity kanye ne-oxidizability.Ingasusa ukungcola nezinto ezingancibiliki ezindongeni zangaphakathi nezingaphandle zamathuluzi okuhlola.Ngokuvamile, isixazululo sokugeza sitholakala ngokungeza i-potassium dichromate ku-concentrated sulfuric acid, kodwa i-chromium eyi-hexavalent iyingozi emvelweni, futhi ngezinye izikhathi ithuluzi lizolimala endaweni eqinile ye-asidi, ngakho-ke ukusetshenziswa kwesisombululo sokugeza i-chromic acid kuncishisiwe.
I-Chromic acid ingasetshenziswa njenge-oxidant.Izinhlanganisela eziningi ze-organic zingafakwa i-oxidized nge-chromic acid, futhi ama-oxidants amaningi asekelwe ku-chromium anehexavalent asenziwe.I-Jones reagent: isixazululo esinamanzi se-chromic acid, i-sulfuric acid ne-acetone, engakhipha i-alcohol eyisisekelo neyesibili kuma-carboxylic acid nama-ketone ahambisanayo ngaphandle kokuthinta izibopho ezingagcwalisiwe.I-Pyridinium chlorochromate: elungiselelwe kusuka ku-chromium trioxide ne-pyridine hydrochloride, ingaxuba utshwala obuyisisekelo ku-aldehyde.I-Collins reagent: i-adduct ye-chromium trioxide ne-pyridine.
I-Chromic acid ingabuye isetshenziselwe ukucwenga kwe-chromium, i-chromium yensimbi ehlanzekile kakhulu, i-pigment, i-mordant, imithi kanye nokuthintana namalahle, kanye nokukhiqizwa kwamanye ama-glaze nezingilazi ezinemibala.
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