Title: Sodium Alizarinesulfonate
CAS Registry Number: 130-22-3
CAS Name: 9,10-Dihydro-3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonic acid monosodium salt
Additional Names: alizarine S; alizarine carmine; C.I. Mordant Red 3; C.I. 58005
Molecular Formula: C14H7NaO7S
Molecular Weight: 342.26
Percent Composition: C 49.13%, H 2.06%, Na 6.72%, O 32.72%, S 9.37%
Literature References: Prepn: Colour Index vol. 4 (3rd ed., 1971) p 4514.
Derivative Type: Monohydrate
Properties: Orange-yellow powder. Freely sol in water with yellow color; sol in alcohol.
Use: As acid-base indicator and in the determination of fluorine, usually used as a 1% aq soln. pH: 3.7 yellow, 5.2 purple; as a reagent for aluminum and stain in microscopy. |