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| 氢氧 | qīng yǎng | hydroxide (e.g. caustic soda NaOH) |
| 烧碱 | shāo jiǎn | caustic soda NaOH |
| 苛性钠 | kē xìng nà | caustic soda / sodium hydroxide NaOH |
| 氢氧化钠 | qīng yǎng huà nà | caustic soda / sodium hydroxide NaOH |
| 氢氧化 | qīng yǎng huà | hydroxide (e.g. caustic soda NaOH) |