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Thymolphthalein |
White or straw yellow powder，insolve in water,solve in alcohol。 |
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Phenolphthaleinum |
White or light yellow thin little crystal，solve in alcohol、aether,decline solve in chloroform,insolve in water，melting point258-262℃。 |
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Bromocresol green |
White or pale grey crystal，easy solve in alcohol,aether and benzene,decline solve in water。 |
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Eosin Y(alcohol solution ) |
Salmon pink crystalloid powder，easy solve in lye,insolve in water,decline solve in alcohol。 |
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Xylenol orange |
Red,palm,crystalloid,powder,easy deliquescence,solve in water ,insolve in alcohol。 |
