Barium Chromate 10294-40-3 Siv los tiv thaiv xeb xim
Product Detail
| Lub npe | Barium chromate |
| CAS nr | 10294-40-3 : kuv |
| Cov mis mos molecular | BaCrO4 |
| Molecular hnyav | 253.3207 ib |
| EINECS Number | 233-660-5 : kuv |
| Melting point | 210 ° C (txog) (lit.) |
| Qhov ntom | 4.5 g / mL ntawm 25 ° C (lit.) |
| Daim ntawv | Hmoov |
| Lub ntiajteb txawj nqus tshwj xeeb | 4.5 |
| Xim | Daj |
| Dej solubility | Insoluble hauv dej.Soluble nyob rau hauv muaj zog acids. |
| Precipitation Equilibrium Constant | qw :9,93 |
| Kev ruaj ntseg | ruaj khov.Oxidizer.Tej zaum yuav hnov mob hnyav nrog cov tshuaj txo qis. |
Synonyms
Bariumcromate; BariumChromate, Puratronic (MetalsBasis); Bariumchromate: chromicacid, bariumsalt; BARIUMCHROMATE; ci77103; cipigmentyellow31; Chromicacid (H2-CrO4), barium ntsev (1: 1); Chromicacid, bariumsalt (1: 1)
Chemical Properties
Muaj ob hom barium chrome daj, ib qho yog barium chromate [CaCrO4], thiab lwm yam yog barium potassium chromate, uas yog cov ntsev ntsev ntawm barium chromate thiab potassium chromate.Cov tshuaj formula yog BaK2 (CrO4)2 los yog BaCrO4·K2CrO4.Chromium Barium Oxide yog cov hmoov qab zib-daj, soluble hauv hydrochloric acid thiab nitric acid, tsis tshua muaj zog tinting.Cov txheej txheem thoob ntiaj teb rau barium chromate yog ISO-2068-1972, uas yuav tsum muaj cov ntsiab lus ntawm barium oxide tsis tsawg dua 56% thiab cov ntsiab lus ntawm chromium trioxide tsis tsawg dua 36.5%.Barium potassium chromate yog txiv qaub-daj hmoov.Vim yog cov poov tshuaj chromate, nws muaj qee yam dej solubility.Nws qhov txheeb ze ntom ntom yog 3.65, nws qhov taw qhia qhov taw qhia yog 1.9, nws cov roj nqus yog 11.6%, thiab nws qhov ntim tshwj xeeb yog 300g / L.
Daim ntawv thov
Barium chromate tsis tuaj yeem siv los ua xim xim.Vim tias nws muaj chromate, nws muaj cov nyhuv zoo ib yam li zinc chrome daj thaum siv cov xim pleev xim.Barium potassium chromate tsis tuaj yeem siv los ua xim xim, tab sis tsuas yog siv tau los ua cov xim pleev xim, uas tuaj yeem hloov ib feem ntawm zinc daj.Los ntawm txoj kev xav ntawm txoj kev loj hlob, nws tsuas yog ib qho ntawm ntau yam ntawm chromate anti-xeb pigments muaj nyob rau hauv kev lag luam txheej.
