不会全到氯化镁啊,
大部分会是磷酸二氢镁和氯化镁
【 在 semibomb () 的大作中提到: 】
: USP 30中,磷酸三镁有这么一项指标:
: Dibasic salt and magnesium oxide- Ignite about 2.5g to constant weight. Weigh accurately about 2g of ignited salt, and dissolve it by warming with 50.0 mL of 1N hydrochloric acid VS. Cool, add 1 or 2 drops of methyl orange TS, and slowly titrate the
: 按说400多摄氏度灼烧残渣就Mg3(PO4)2。如果是Mg3(PO4)2溶解到MgCl2,我算了下,1g样品用14.8~15.4mL的1mol/L的盐酸溶解是不够的。
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