难检字字典在线查询

汉语拼音：suān jiǎn zhǐ shì jì

一类能由于酸碱性的变化而改变自己颜色的化学试剂。一般为弱有机酸或弱有机碱。如在酚酞酸中显无色，碱中显红色；在石蕊酸中显红色，碱中显蓝色。

• Phenolphthalein or indicator of such a kind is used as colour indicator.

  本发明还可加入酚酞或酚酞类酸碱指示剂作显色指示。

• Ittried the common 10 kinds of acid - base indicators which are available in the titration water sample total alkalinity.

  试验了可用于滴定水样总碱度的常见10种酸碱指示剂。

• Chemical reagent--General method for the determination of pH ranges corresponding the colour transition of acid-base indicators

  化学试剂酸碱指示剂pH变色域测定通用方法

• Indicator Study on Acid-base Titrimetric Determination of Total Acid in Food Am ong GB and ISO Method

  GB及ISO中酸碱指示剂法测定食品中总酸的指示剂研究

• The Effect of Surfactant Micelles on the Dissociation Constants and the Colour-changing Points and Ranges of Acid-base Indicators

  氯化十六烷基吡啶对酸碱指示剂离解平衡及变色范围的影响

• Preparation of Alternate Acid-Base Indicator by Using Plant Pigment

  用植物色素制取代用酸碱指示剂

• The research of amaranth red pigment acting as acid-base indicator

  苋菜红作为酸碱指示剂的研究

• Acid-Alkali Indicator Made by Flowers

  鲜花自制酸碱指示剂