Hello amuderick,
Thank you for your question about the toxicity of aniline black. I
believe that I have found a product safety sheet that describes
analine black.
This can be found at
http://www.basf.de/basf/img/produkte/farbmittel/pigmente/pdf/sdb/e/SDB00154e.pdf
This list the toxicology information as
Acute toxicity
LD50/oral/rat: >5000 mg/kg
Primary skin irritation/rabbit/OECD 404: non-irritant
Primary mucous membrane irritation/rabbits' eyes/OECD 405:
non-irritant
Although the above is used in the production of analine black. From
further research analine black is used as a dye for fabrics.
" 1863 Aniline Black, developed by Lightfoot, a black produced by
oxidation of aniline on the cotton fiber."
From http://www.straw.com/sig/dyehist.html
Another site describes how analine black is produced in dyeing of
fabrics as
"Aniline Black: the aniline is oxidized on the goods by air or steam
aging, producing excellent fastness to light;"
from http://www.unido.org/ssites/env/sectors/sectors72aa.html"
A company that specialises in a variety of Analine blacks is at
http://www.nigrosine.com/product.htm
Although I have the impression from your question that you are
concerned about the dye being toxic when worn as cloths or sucked on
by children. My impression is that most dyes in their pure form are
probably fairly toxic by the nature of what they are supposed to do.
But once they are fixed into the fibres of a fabric they usually stay
there.
In addition according to www.dyeman.com...
10. OXIDATION DYES
These are not dyestuffs in the same sense as other soluble or disperse
dyes, but because of their exceptional fastness to light and washing
are of great importance. The most important member of this group is
produced by oxidation of aniline and is much used in dyeing of fur and
leather goods.
USE: In addition to fur and leather dyeing, aniline black was almost
exclusively used to dye luster black umbrella fabric.
http://www.dyeman.com/Dye%20summary.html
If your product is the pure dye, it may be toxic, if it is just the
fabric that has been treated it is not likely to be hazardous.
So this information suggests that aniline black is quite reliable dye.
But I must make a disclaimer that I am only a researcher and not an
expert in dyes.
I hope this helps.
kind regards
search strategy
"aniline black" dye supplier
"aniline black" safety
"aniline black" toxicity
"aniline black" leather dye |
