Nomenclature
CAS number: 12040-44-7
C.I. Ingrain Blue 1; C.I. 74240; alcian blue 8GX; michrome no. 24.
Description and references
When R = toluyl, the mol wt is about 1300.
Discovered by Haddock and Wood in 1944: Haddock, Research 1, 685 (1948); GB 586340 and GB 587636 (both
to ICI). During dyeing the
X groups split off. Prepn: Colour Index vol. 4 (3rd ed.) p 4620.
Properties
Greenish-black crystals with metallic sheen.
When R = toluyl the solubility in water at 20° is about 9.5% w/w giving
bright greenish-blue solutions. Soly in absolute ethanol about 6.0,
Cellosolve 6.0, ethylene glycol 3.25. Practically insoluble in xylene.Use
Gelling agent for lubricating fluids. As bacterial
stain. To dye histiocytes and fibroblasts
in vivo: McManus,
Bailie,
Fed. Proc. 22, no. 2, part I, p 190 (March-April 1963).