Lub cev muaj zog: Magnesium carbonate feem ntau tshwm raws li cov hmoov dawb dawb, dawb friable lumps, lossis cov hmoov dawb xoob; nws yog odorless thiab tasteless. Nws muaj ib tug txheeb ze ntom ntawm kwv yees li 3.037, yog me ntsis soluble nyob rau hauv dej txias, insoluble nyob rau hauv ethanol, thiab yaj nyob rau hauv dilute acids nrog effervescence. Nws yog hygroscopic thiab roj-absorbent thiab ruaj khov hauv huab cua; Txawm li cas los xij, nws decomposes rau hauv magnesium oxide thiab carbon dioxide thaum rhuab mus rau 700 degree. Nws decomposes raws li kev sib cuag nrog dilute acids, tso carbon dioxide, thiab reacts nkag tau nrog dej thaum rhuab los tsim magnesium hydroxide.
Chemical Properties: Magnesium carbonate reacts nrog acids los tsim cov magnesium ntsev thiab carbon dioxide gas; Piv txwv li, nws reacts nrog hydrochloric acid los tsim magnesium chloride, dej, thiab carbon dioxide, thiab nrog sulfuric acid los tsim magnesium sulfate, dej, thiab carbon dioxide. Nws kuj reacts nrog ammonium ntsev tov thiab yog yooj yim soluble nyob rau hauv muaj zog alkaline daws.
Nws tshwm sim raws li qhov yooj yim hydrated magnesium carbonate lossis ib txwm hydrated magnesium carbonate. Nyob ntawm cov xwm txheej crystallization, cov khoom tau muab faib ua "lub teeb" lossis "hnyav," nrog rau ntau yam teeb pom kev zoo. Nyob rau hauv chav tsev kub, nws tshwm sim raws li ib tug trihydrate. Lub teeb ntau yam tshwm sim li dawb friable lumps los yog xoob dawb hmoov; nws tsis muaj ntxhiab thiab ruaj khov hauv huab cua. Thaum rhuab mus rau 700 degree, nws tso carbon dioxide thiab tsim magnesium oxide. Nws yog zoo insoluble nyob rau hauv dej tab sis imparts ib me ntsis alkaline cov tshuaj tiv thaiv rau cov dej. Nws yog insoluble hauv ethanol tab sis dissolves nyob rau hauv dilute acids nrog effervescence.