КАРБОНАТ СВИНЦА
КАРБОНАТ СВИНЦА атрибут
| Температура плавления: |
399-401°C (dec.) |
| плотность: |
6.6 g/cm3 |
| показатель преломления: |
2.08 |
| температура хранения: |
Store below +30°C. |
| растворимость: |
insoluble in H2O |
| форма: |
пудра |
| цвет: |
белый |
| РН: |
5.8 (50g/l, H2O, 20℃)(slurry) |
| Растворимость в воде: |
Растворим в кислоте и щелочи. Нерастворим в воде, спирте и аммиаке. |
| Диэлектрическая постоянная: |
18.1（16.0℃） |
| Стабильность:: |
Стабильный. Несовместим с сильными кислотами, сильными окислителями. |
| Справочник по базе данных CAS: |
598-63-0(CAS DataBase Reference) |
| FDA UNII: |
43M0P24L2B |
| Система регистрации веществ EPA: |
Lead(II) carbonate (598-63-0) |
КАРБОНАТ СВИНЦА химические свойства, назначение, производство
Химические свойства
Lead carbonate forms colorless orthorhombic crystals; it decomposes at about 315 °C. It is nearly insoluble in cold water (0.00011 g/100 mL at 20 °C), but is transformed in hot water to the basic carbonate, 2PbCO3·Pb(OH)2. Lead carbonate is soluble in acids and alkalies, but insoluble in alcohol and ammonia.
Использование
Lead carbonate (PbCO3) is found in nature as cerussite. It can also be produced in the
laboratory by reacting sodium carbonate with chlorine. It is a crystalline poison that was, and
to a lesser extent still is, used as a pigment in white house paints.
Определение
cerussite: An ore of lead consistingof lead carbonate, PbCO3. It is usuallyof secondary origin, formed by theweathering of galena. Pure cerussiteis white but the mineral may be grey due to the presence of impurities. Itforms well-shaped orthorhombiccrystals. It occurs in the USA, Spain,and SW Africa.
Методы производства
Lead carbonate is prepared by passing CO2 into a cold dilute solution of lead acetate, or by shaking a suspension of a lead salt less soluble than the carbonate with ammonium carbonate at a low temperature to avoid formation of basic lead carbonate.
КАРБОНАТ СВИНЦА препаратная продукция и сырье
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препарат
КАРБОНАТ СВИНЦА поставщик
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