制备O/W型乳剂时,所用乳化剂其HLB值宜为多少合适A:1~5B:6~13C:8~18D:3~8E:18~20

作者: rantiku 人气: - 评论: 0
问题 制备O/W型乳剂时,所用乳化剂其HLB值宜为多少合适
选项 A:1~5 B:6~13 C:8~18 D:3~8 E:18~20
答案 C
解析 HLB值不同,应用不同。一般来说:①3~6用于W/O型乳化剂;②8~18用于O/W型乳化剂;③13~18用于增溶剂;④7~9用于润湿剂。

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