Sodium molybdate CAS 7631-95-0
Sodium molybdate, formula Na2MoO4. Molecular hnyav 205.92. Dawb pob zeb diamond siv lead ua. Opaque dawb crystal. Melting point 687 ℃, txheeb ze ntom 3.2818. Dissolve hauv dej. Dihydrate tuaj yeem tau los ntawm crystallization los ntawm cov kua dej aqueous (alkaline tov nrog pH siab dua 8). Cov tom kawg yog dawb rhombohedral siv lead ua. MoO42- ions muaj nyob li niaj zaus tetrahedrons nrog tus txheeb ze ntom ntawm 3.28. Thaum rhuab mus rau 100 ℃, 2 molecules ntawm cov dej tau poob kom tau cov tshuaj anhydrous, yooj yim soluble nyob rau hauv dej, soluble nyob rau hauv 1.7 qhov chaw dej txias thiab txog 0.9 qhov chaw boiling dej. 5% aqueous tov ntawm 25 ℃ pH 9.0 ~ 10.0, insoluble hauv ethyl acetate. Los ntawm maj mam ntxiv cov kua qaub rau hauv cov tshuaj sodium molybdate thiab txo cov pH ntawm cov tshuaj, cov molybdate tuaj yeem ua polymerized rau ntau hom ntsev polymolybdate, suav nrog sodium dimolybdate, sodium trimolybdate, sodium paramolybdate, sodium octamolybdate thiab sodium decamolybdate.
| Yam khoom | UA % |
| Na2MoO4•2 H2O | 99.29 ib |
| Mo | 39.38 Nws |
| Dej insoluble | 0.1 max |
| NH4 | 0.005 max |
| Pb | 0.001 max |
| Fe | 0.002 max |
| PO 4 | 0.05 max |
| SO4 | 0.01 max |
| pH | 9.5 ib |
Sodium molybdate yog sodium molybdate, siv los ua hlau corrosion inhibitor, scale tshem tawm tus neeg saib xyuas, bleaching promoter thiab daim tawv nqaij thiab plaub hau tiv thaiv tus neeg saib xyuas, siv raws li ib tug analytical reagent rau alkaloid kev txiav txim, dyes thiab kev lag luam kws tshuaj; Sodium molybdate tuaj yeem siv rau hauv kev tsim cov alkaloids, number case, chiv, molybdenum liab pigment thiab ceev pigment precipitant, catalyst, molybdenum ntsev, kuj tseem siv tau nyob rau hauv kev tsim cov nplaim hluav taws thiab tsis muaj kuab paug hom dej txias system ntawm hlau inhibitors, kuj siv los ua galvanizing, polishing agent thiab tshuaj reage.
25kg / hnab
Sodium molybdate CAS 7631-95-0
Sodium molybdate CAS 7631-95-0
