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硬脂酸的檢查方法

文章出處：本站    人氣：14958    發表時間：2020-09-18 11:27:49

硬脂酸的檢查方法：

水溶性酸：取本品5g，加熱熔化，加等容新沸的熱水，振搖 2分鐘，放冷，濾過，濾液中加甲基橙指示液1滴，不得顯紅色。

中性脂肪或蠟：取本品1.0g，加無水碳酸鈉0.5g與水30ml，煮沸使溶解，溶液應澄清。

熾灼殘渣 ：取本品4.0g，依法檢查（附錄Ⅷ N），遺留殘渣不得過0.1 %。

重金屬：取熾灼殘渣項下遺留的殘渣，依法檢查（附錄Ⅷ H第二法），含重金屬不得過百萬分之五。


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