Sun Yellow

Property Data
Common name
Suggested name
Other names
C.I. number
C.I. name
Class
Ionisation
Solubility aqueous
Solubility ethanol
Absorption maximum
Colour
Empirical formula
Formula weight
Sun yellow
Sun yellow
Numerous others
40000
Direct yellow 11
Stilbene, Azo
Acid
Moderate
Slight
407
Yellow
C28H16N4O13S4Na4
837

There has been little use of this dye in histology. Lendrum, Slidders and Fraser suggest it as a yellow fibre stain in their trichrome technique.

Due to the way this dye is made, it does not have a single structural formula, but numerous closely related compounds are collectively referred to as CI 4000, direct yellow 11. The formula above should be considered a general type rather than a specification.

 

Reference
Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.

Colour Index, Ed. 2. (1956)
Society of dyers and colourists, UK.

 


 

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