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提供一种食品抗氧化剂的合成方法

2025-03-25 12:10:43

推荐回答（1个）

回答1：

连二亚硫酸钠（保险粉）

在分析上用作氧气吸收剂，还用作染料中间体和漂白剂

1、NaBH4的碱性溶液，在碱性条件下和SO2反应生成连二亚硫酸钠。

2、在没有氧的条件下,用锌粉还原NaHSO3可制得连二亚硫酸钠:
2NaHSO3+Zn=Na2S2O4+Zn(OH)2

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