Product name:Alizarin Fluorine Blue
CAS:3952-78-1
Molecular Formula:C19H15NO8
Formula Weight:385.32
Description:Alizarin Fluorine Blue ginger powder. Melting point 180℃ (decomposition). Slightly soluble in water, ethanol and ethyl ether, slightly soluble in water at pH>5, and the solubility decreases at pH<5.
Reaction between alizarin and iminodiacetic acid: 16g alizarin and 22.5g iminodiacetic acid were suspended in 30ml water and treated with 60ml aqueous solution containing 13.5g sodium hydroxide. While stirring, add 37% formaldehyde 10ml. The mixture was diluted with water to 230ml. Heat to 75℃, add 37% formaldehyde 7ml while stirring, and keep warm for 14g. Dilute to 750ml and treat with 5N hydrochloric acid at 45℃ until no precipitation occurs. Filter and crystallize into coarse products. Add thick product dissolved in distilled water, sodium hydroxide solution, and hydrochloric acid to precipitate the precipitation, filtration, washing can be tasted Alizarin Fluorine Blue.
Specification:1g
Appearance:Yellow powder.
Density:1.641g/cm3
Melting Point:190C
Boiling Point:687.1°Cat760mmHg
Flash Point:369.4°C
Solubility:slightly soluble (soluble in aq. alkali insoluble in alcohol and ether)
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Storage:In ventilate and dry places