Industrial grade sodium metabisulfite (Na2S2O5) for dyeing and printing (CAS 7681-57-4)
名称：焦亚硫酸钠
CAS号：7681-57-4
分子式：Na2S2O₅
纯度：97%
外观：白色铸造粉末
粒度：100-120目
包装：25公斤
用途：染色、有机合成、印花
分类：工业或食品
焦亚硫酸钠是一种白色或黄色结晶性粉末或小晶体，具有强烈的二氧化硫气味。它易溶于水，其水溶液呈酸性。与强酸接触时，会释放出二氧化硫并生成相应的盐。长时间暴露于空气中，焦亚硫酸钠会氧化成六亚硫酸钠（Na₂S₂O₆）。因此，该产品不宜长期储存。二氧化硫在150摄氏度以上会分解。
MAECENAS IACULIS
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ADIPISCING CONVALLIS BULUM
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