U of S | Mailing List Archive | alt-photo-process-l | Re: tricolor gum question - yellow

Re: tricolor gum question - yellow



Agree about the pure pigments...I just happened to pick up the Sennelier today while I was out and looked at the tube when I got home.


----- Original Message ----- From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, November 18, 2009 3:06 PM
Subject: Re: tricolor gum question - yellow


Hmm, okay.... Maybe I should have been more precise: Daniel Smith is the only paint manufacturer I'm aware of whose "quinacridone gold" is still pure PO49. The idea of mixing PO49 with pthalo green seems rather dubious to me; obviously they're trying to eke out what PO 49 they've got left by mixing it with other stuff, in this case greying it down with an approximate complement, which would tend to neutralize the warm tone of the PO49. At any rate, pure pigments are always superior to mixtures, IMO.



On Nov 18, 2009, at 2:14 PM, Paul Viapiano wrote:

Sennelier Q Gold is PO49 + PG7

Paul


----- Original Message ----- From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@usask.ca>
Sent: Wednesday, November 18, 2009 10:24 AM
Subject: Re: tricolor gum question - yellow



Yes, Daniel Smith is the only manufacturer still using PO 49; the last of other lines ran out in 2005. So if other brands are still selling paint called "quinacridone gold" or intending to substitute for quinacridone gold, it's a mixture of pigments, most often nickel azo (PY 150) with a red pigment.
On Nov 18, 2009, at 9:48 AM, Linda Stinchfield wrote:

Thank you for the information on quinacridone gold. I used to get it from Golden, for painting in acrylics, and loved the way it mixed with other colors. Then the formula changed, the name became Q. gold nickel azo... and it didn't mix the same at all. It was a huge disappointment. Last year I found the Daniel Smith Q. gold watercolor and acrylic paints and have bought several tubes of each. Maybe I'd better buy some more...

Linda


On Nov 18, 2009, at 6:15 AM, Katharine Thayer wrote:


Actually, PO 49 (quinacridone gold) hasn't been manufactured since 2001. Daniel Smith bought up a lot of the available supply at that time; I was told then that there was enough to make paint into the foreseeable future; the person I talked to said "Don't worry, we've got plenty." I haven't checked back since to see how their supply is holding out. But don't buy it, because Keith and I want it all.


On Nov 17, 2009, at 6:25 PM, Keith Gerling wrote:


I love Daniel Smith quinacridone gold. While I use 3 blues and 8 or so reds, the only yellow I use is the Quin Gold. Very transparent. Warm, and not garish.

Don't buy it though. Rumor has it that the pigment was created for the automotive industry (that gold PT Cruiser!) and that it won't be made anymore. So I want it all for myself!