Black pyrogallol?!?

dlbr · Dec 3, 2011

I just got the fresh supply of pyrogallol from my local dealer, and it was all dark, nearly black. It look as crystaline powder, but black. Being no chemist, I could not argue with the guy, who kept telling me it is perfectly all right and that it should work no prob. Did you pyro guys think I should trust it or rather demand the replacement?

Thanks for help.

payral · Dec 3, 2011

Pyrogallol should be light grey (almost white) not black. I think you should sent it back.
I include a picture of mine which is almost two years old stock

dlbr · Dec 3, 2011

Thanks a lot, that is what I would expect pyrogallol to be. I will ask for the replacement, then.

Crashbox · Dec 3, 2011

Definitely not good, take it back.

I still have some pyro that's well over 20 years old and it is still white or nearly so; it has been well-stored of course.

c6h6o3 · Dec 3, 2011

dlbr said:
I just got the fresh supply of pyrogallol from my local dealer

Local dealer? for pyrogallol? where, pray tell, might that be?

brucemuir · Dec 3, 2011

I have a LIQUID PMK kit that is at least 7-8yrs new and the rim of the bottle gets dark black which I assume is from oxidation.
The liquid itself is still clearish and works fine.

Gerald C Koch · Dec 3, 2011

You don't say how the pyrogallol was packaged. I have had problems with some developing agents packed in plastic bottles. I have had pyrogallol keep for many years in glass bottles. Some plastics allow oxygen to diffuse into the container. I would recommend getting your money back.

dlbr · Dec 27, 2011

c6h6o3 said:
Local dealer? for pyrogallol? where, pray tell, might that be?

Dorapis, Prague, Czech Republic. Just puch it to google and you will see. I have this shop round the corner, which comes handy, though not without a downside ... .

Anyway, the matter has been concluded - I have received the replacement, which seems fine and proper.

c6h6o3 · Dec 27, 2011

I'd be in hog heaven if I could buy pyro around the corner.

keithwms · Dec 27, 2011

Oxidized? Maybe it could still be saved. Or maybe the black is just because it hasn't been ground finely?

I'd try a bit before sending it back.

Black pyrogallol?!?

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