Re: Dye



Dirk Bruere at NeoPax wrote:

Looking for a deep blue dye that is water soluble and water stable to
create a coloured solution. Any ideas?

Sealed ampoule, right? Try vanadyl sulfate in water plus a small drop
of sulfuric acid. Next best is copper sulfate in concentrated aqueous
ammonia.

Organic blues are not generally not lightfast. Thiobenzophenone is
astoundingly blue.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz3.pdf
.