Phenolphthalein (Quinone type)
Benzoic acid, 2-((4-hydroxyphenyl)(4-oxo-2,5-cyclohexadien-1-ylidene)methyl)-
Molecular Formula & Molecular Weight
Molecular Formula: C20H14O4
Molecular Weight: 318.32
Solubility: slightly soluble in water.
Risk: irritation, irritation to skin, eye.
Ecology: may be hazardous to environment. Water body should be given special attention.
Characteristics: excellent emulsifying, dispersing abilities.
Quality standards & test methods
physical and chemical indexes
Actives*, %, ≥
*: should be marked on molecular weight.
Use as acid-base indicator.