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焦亚硫酸钠 |
| 性状 |
| 白色或黄色结晶粉末或小结晶,带有强烈的SO2气味,比重 1.4,溶于水,水溶液呈酸性,与强酸接触则放出SO2而生成相应的盐类, 久置空气中,则氧化成Na2S2O4,故该产品不能久存。高于1500C,即分解出SO2 |
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| 规格 |
指 标 成 分 | 工业级标准 | 食用级标准 | | Content(as SO2) %≥ | 65 | 65 | | Water-insoluble Matter, % ≤ | 0.05 | 0.05 | | Iron(Fe), % ≤ | 0.003 | 0.003 | | PH | 4.0-4.6 | 4.0-4.6 | | Arsenic (As), % ≤ | | 0.0002 | | Lead (Pb), % ≤ | | 0.002 | |
| 使用方法 |
用途: 工业上用于印染、有机合成、印刷、制革、制药等部门; 在食品加工中作防腐剂、漂白 剂、疏松剂。 |
| 包装 |
焦亚硫酸钠用塑料编织袋或桶包装,内衬塑料袋、净重 25 kg |
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