Alizarin complexone dihydrate, pure indicator grade

Supplier: Thermo Scientific

Synonyms: 3-Bis(carboxymethyl)aminomethyl-1,2-dihydroxyanthraquinone dihydrate, Alizarin fluorine blue dihydrate, 3,4-dihydroxyanthraquinon-2-ylmethyliminodi(acetic acid) dihydrate, 2-[(3,4-dihydroxy-9,10-dioxoanthracen-2-yl)methyl-(2-oxido-2-oxoethyl)azaniumyl]acetate dihydrate, Alizarine-3-methylamine-N,N-diacetic acid dihydrate

155830010 155830050
ACRO155830010EA 102 GBP
ACRO155830010 ACRO155830050
Alizarin complexone dihydrate, pure indicator grade
Alizarin complexone dihydrate

CAS No.: 455303-00-1

Formula: C₁₉H₁₅NO₈·2H₂O
MW: 421,36 g/mol
Melting Pt: 180…185 °C
Storage Temperature: Ambient
MDL Number: MFCD00149067
CAS Number: 455303-00-1

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Specification Test Results

Appearance Yellow to orange to brown Powder
Infrared spectrum Conforms
Water ≤9.5 % (K.F.)
Appearance of solution (0.2% soln. in 0.02 M NaOH) clear, deep red-purple
UV Lambda max 425 to 430 nm (C=10 mg/l, Methanol)
Titration with NaOH 97 to 103 % (On dry substance)
Absorbance ≥0.42 (lambda max, after 1 hr.)(2 ml of a 0.2% soln. in 0.02 M NaOH + 5 ml acet

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