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ammonium sulfite
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ammonium sulfite
Encyclopedia
工学
二氧化硫
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ammonium sulfite
硫酸铵
分子式(NH 4) 2 SO 4 ,分子量132。纯品为无色斜方晶体,工业品为白色至淡黄色结晶体,无气味,熔点80~230℃,0℃时水中溶解度70.6克,100℃时103.8克,不溶于乙醇和丙酮,0.1摩尔/升水溶液的pH为5.5,相对密度1.77,折光率1.521。
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weighted average value
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weighted histogram analysis method, WHAM
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weighted least-squares principle
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