泡碱(英语:natron)是天然的十水碳酸钠(Na2CO3·10H2O)、约17%的碳酸氢钠(NaHCO3)及少量氯化钠和硫酸钠的混合物。纯的天然碳酸钠呈白色至无色,有杂质时为灰或黄色。天然碳酸钠矿床可在干旱环境中产生的盐湖床中出现。

“natron”一词在现代矿物学只指十水碳酸钠(水合苏打灰)。

参见

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