Phenolphthalein / phenol / phenol bran phthalein / phenol bran / fenotalin / Guodao
Item No.： SR0092
Store at： RT
English name：Phenolphthalein；2-[Bis(4-hydroxyphenyl)methyl]benzoic acid；3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; 3,3-Bis(4-hydroxyphenyl)phthalide
Other names: phenol; Phenol bran; 3,3-bis (4-hydroxyphenyl) - 1 (3H) - isobenzofuranone; 3,3-bis (p-hydroxyphenyl) phthalide; Feynotalin; Fruit guide
CAS No.: 77-09-8
C20H14O4=318.33
Grade: ind
PH discoloration range: 8.0 (colorless) ～ 10.0 (red purple)
Loss on drying: ≤ 1.0%
Ethanol dissolution test: acceptable
Burning residue: ≤ 0.1%
Physicochemical properties: white or light yellow triclinic fine crystals, stable in air. 1g is dissolved in 12ml of ethanol and about 100ml of ether. It is dark red in dilute alkali solution, slightly soluble in chloroform and almost insoluble in water. The relative density is 1.299. The melting point is 258 ～ 262 ℃. Maximum absorption wavelength (in methanol) 205, 229, 276nm（ ε 27261.147、14692.144、2006.369)。 Minimum lethal dose (rat, abdominal cavity) 500mg / kg
Purpose: biochemical research. Acid base indicator; Non aqueous titration indicator; chromatographic analysis
Saving: RT
