596-27-0
中文名称
邻甲酚酞
英文名称
o-Cresolphthalein
CAS
596-27-0
EINECS 编号
209-881-8
分子式
C22H18O4
MDL 编号
MFCD00005912
分子量
346.38
MOL 文件
596-27-0.mol
更新日期
2025/04/27 13:53:51
596-27-0 结构式
基本信息
中文别名
3,3-双(4-羟基-3-甲基苯基)-(3H)-异苯并呋喃酮邻甲苯酚酞
邻甲酚酞
邻甲酚呋酞
3,3'-二甲酚酞
邻甲酚酜酞
鄰甲苯酚酞
3,3'-二甲基酚酞
3,3-双(4-羟基-3-甲基苯基)-1(3H)-异苯并呋喃酮
英文别名
3,3'-DIMETHYLPHENOLPHTHALEINLABOTEST-BB LT00451717
O-CRESOLPHTHALEIN
TIMTEC-BB SBB006498
3,3-bis(4-hydroxy-3-methylphenyl)-(3H)-Isobenzofuranone
3,3-bis(4-hydroxy-3-methylphenyl)-1(3h)-isobenzofuranon
3,3-Bis(4-hydroxy-3-methylphenyl)-1-(3H)-iso-benzofuranone
3,3-bis(4-hydroxy-3-methylphenyl)-1(3h)-isobenzofuranone
3’,3’’-dimethyl-phenolphthalei
cresolphthalein
Di-o-Cresolphthalide
o-Cresolphalein
o-cresolphtaleine
3,3-bis(4-hydroxy-m-tolyl)phthalide
o-Cresollphthalein (0.04% in ca. ethanol)
o-Cresolphthalein (0.1% in ca. 90% ethanol)
ortho-cresolphthalein
O-CRESOLPHTHALEIN INDICATOR
ORTHO-CRESOLPHTHALEIN, INDICATOR GRADE
O-Cresolphthaleine(PhIndicator)
所属类别
生物化工：酸碱指示剂物理化学性质
外观性状白色或红光黄色结晶粉末。熔点223℃，溶于乙醇、乙醚、冰醋酸，溶于稀碱呈紫色，微溶于水，难溶于苯。
熔点223-225 °C
沸点401.12°C (rough estimate)
密度1.1425 (rough estimate)
折射率1.4400 (estimate)
储存条件room temp
溶解度微溶于水；溶于乙醇
酸度系数(pKa)9.40(at 25℃)
形态粉末
颜色透明无色
PH值8.2-9.8, colorless to red
酸碱指示剂变色ph值范围8.2 (colorless) - 9.8 (violet/red)
水溶解性微溶
ε(消光系数)≥10000 at 294-300nm
≥39000 at 564-570nm
≥5000 at 378-384nm
≥39000 at 564-570nm
≥5000 at 378-384nm
最大波长(λmax)566nm, 381nm
Merck14,2576
BRN310554
主要应用Sensors, display device, photoresists, recording materials, imaging materials, authentication system for secure documents, decoder system, lithium cells, electroplating process, inks, markers, toners, correction fluid, paints, adhesives, floor coatings, gas leaking detector for safety in industries, toys, food storage, diapers, determination of calcium, lotions, urine analysis test strips, drugs, blood analysis
InChIKeyCPBJMKMKNCRKQB-UHFFFAOYSA-N
制备方法
方法一
由苯酐与邻甲苯缩合而得。将苯酐和邻甲酚混合加热熔化，在110℃加入无水氯化锌，并在110-115℃搅拌反应12-18h，通入蒸汽赶出剩余的邻甲酚。将所得粗品氢氧化钠溶液溶解，过滤。滤液用稀盐酸中和，得白色结晶即为成品。