Alizarin (pa)

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Price: 504.00 ГРН

International name: Alizarin

CAS Number: 72-48-0

Appearance: orange-red crystals or brownish-yellow powder.

Description: Alizarin (1,2-dioksiantrahinon) C14H8O4 - one of the most organic dyes. Melting point = 290 ° C; boiling point = 430 ° C. Water solubility 0,034 g per 100 ml at 100 ° C. It is soluble in ethanol; soluble in hot methanol, benzene, acetic acid, carbon disulfide, pyridine and alkali. With multivalent metal salt gives a colored complex. Easily sublime. Recrystallized from ethanol. As pH indicator has two colors transition from pH 5.9 to 7.0 from yellow to dark pink; pH 10.1 to 12.0 with dark pink to purple.


Dyes of Alizarin used for dyeing fabrics. Apply the solution of aluminum fluoride, germanium, niobium, thorium, titanium, zirconium. niobium and tantalum. Photometric determining of alizarin aluminum, zirconium and fluoride.

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