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demi-sulphate is meant the sulphate containing a half mole of sulphuric acid per mole of melamine.
(C.sub.3 H.sub.6 N.sub.6.1/2H.sub.2 SO.sub.4)
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demi-sulphate: °ëÁò»¯Îï, ±ÈÈç: Èý¾ÛÇè°·/ÁòËáµÄĦ¶û±ÈΪ2:1µÄÁò»¯Îï

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By the term "demi-sulphate" is meant the sulphate containing a half mole of sulphuric acid per mole of melamine
where-there-is-a-will-there-is-a-way.
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