Friday, February 17, 2012

More questions about gum arabic used for watercolors

QUESTION: Why is photo-grade gum arabic less expensive than gum arabic sold for watercolors? Can photo-grade gum arabic be used with watercolor? Thank you :-)

SUSIE"S REPLY: I did some investigating and I've learned that gum arabic is used in several forms for several purposes from food stabilizers to inks and textiles. It can be obtained in a powder, syrup, chunk solids, or pellets.
Some of its non food uses include traditional lithography, when used in paints, inks, glues, and printing.
As you mentioned it is also used in photography as well as cosmetics. Another interesting thing I learned was it is used on the postage stamps we once licked to stick on our mail.
My guess would be the photo grade gum arabic's chemical components are different than the gummy syrup used in manufacturing watercolor paints.

Can you use photo-grade gum arabic with watercolor?  If you are mixing your own tube paints it seems to me the thicker syrup type would make a more stable base for the paint.
Since I don't mix my own paint thats just my guess. Let me know if you discover any thing different!
Thanks for your question,

1 comment:

Plastic cards said...

Simple to the point and informative, enhancing my knowledge a lot...