Specification
Product Name CRESOLPHTHALEIN
Synonyms 3,3-Dimethylphthalein
CAS NO. 596-27-0
Molecular Formula C22H18O4
Formula Weight 346.39
Appearance White Powder
Structure
   
Tests    Limits
Solubility 0.1% (Ethanol)

- Clear Solution

Transition range - pH 8.2-9.8 (Colourless – Violet Red)
Absorptivity 1%,1cm (in 0.1N NaOH)
at λ max.568.0nm

- >1800

Loss on Drying at 110°C (1hr) - <1%
   
   
REVISED: 1-1-2012  
 
 
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