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21food.cn
8 天
焦亚硫酸钾(食品级)生产
性状 白色或无色结晶,或白色结晶性粉末或颗粒。通常具有二氧化硫气味,相对密度(d145)2.300。150℃时分解,在空气中逐渐氧化成硫酸盐。在酸中可产生二氧化硫气体。可溶于水,难溶于乙醇,不溶于乙醚。1%水溶液的pH为3.4~4.5。有强还原性。 河北源创生物 ...
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