Alizarin yellow GG (ра)

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Alizarynovyy yellow

CAS Number 1718-34-9

Molecular weight: 309.2

The general formula: C13H8N3NaO5

Appearance: yellow powder

Description: Easily soluble in hot water, soluble in ethanol, aqueous alcohol solution and golden yellow, slightly soluble in cold water, propanol.

Application: acid-base indicator has two color transitions.

     red - yellow pH 1,9-3,3
     yellow - lime pH 10,1-12,1

 

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