PH9200 | 酚酞试剂/指示剂 Phenolphthalein

英文名称：Phenolphthalein；2-[Bis(4-hydroxyphenyl)methyl]benzoic acid；3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; 3,3-Bis(4-hydroxyphenyl)phthalide
其他名称：酚；酚麸酞；酚麸；3，3-双（4-羟基苯基）-1（3H）-异苯并呋喃酮；3,3-双(对羟基苯基)苯酞；非诺夫他林；果导
CAS号：77-09-8
C20H14O4=318.33


级别：IND
pH变色域：8.0（无色）～10.0（红紫色）
干燥失重：≤1.0%
乙醇溶解试验：合格
灼烧残渣：≤0.1%
性状：白色或浅黄色三斜细小结晶，在空气中稳定。1g溶于12ml乙醇、约100ml乙mi，溶于稀碱溶液呈深红色，极微溶于lv仿，几乎不溶于水。相对密度1.299。熔点258～262℃。最大吸收波长(甲醇中) 205、229、276nm(ε27261.147、14692.144、2006.369)。
用途：仅用于生化研究。酸碱指示剂；非水溶液滴定指示剂；色谱分析；
保存：RT


酚酞是指一种化学成品，属于晶体粉末状，几乎不溶于水。其特性是在酸性和中性溶液中为无色，在碱性溶液中为紫红色。常被人们用来检测酸碱。

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.

Phenolphthalein's common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue.