磷酸钠 Traditional form: 磷酸鈉 Pinyin (reading): línsuānnà Definitions: sodium phosphate (chemistry) Characters: 磷 - phosphorus 酸 - tart, sour; spoiled; acid 钠 - sodium, natrium; to sharpen wood Traditional characters: 磷 - phosphorus 酸 - tart, sour; spoiled; acid 鈉 - sodium, natrium; to sharpen wood