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Thymolphthalein

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thymolphthalein

cas no. : 125-20-2

molecular formula: c28h30o4

molecular weight: 430. 54

property : white or yellowish crystalline powder. Dissolved in ethanol or diluted basic hydroxide solution,undissolved in water, melting point : about 245-246c.

use: acid-base indicator; chromatic spectrum analytic reagent.

melting point : 251. 0- 255. 0

range of ph: 9. 0 (colorless) -10. 2 (blue)

solubility test in ethanol: passed

solubility test in sodium hydroxide: passed

residue on ignition (sulfate): 0. 1% max.

 
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