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Chalk, Marble Dust, Whiting and Calcium Carbonate
French Chalk, Marble Dust, calcium carbonate, whiting
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French Chalk, Marble Dust, calcium carbonate, whiting
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starting price:
$8.00
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Part Number:
PCD
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1 kilogram bag (2.2 lbs.)
5 kilogram bag (11 lbs.)
10 kilogram bag (22 lbs.)
20 kilogram bag (44 lbs)
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Description
Questions and Answers
Calcium carbonate as a paint additive and for making gesso & pastels. Extra White Grade for bright white gesso grounds. Average particle size is 8-10 microns.
"The whiter the chalk is, the greater its value; therefore French Chalk is the best." Max Doerner.
Q:
My question is the Franch Calk ans Calciam Carbonate is the same thing or they are diffrent from each other?
Asked by:
Uzma Usmani
- 12/26/2016
A:
Yes, French Chalk and Calcium Carbonate are the same thing.
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Answer provided by:
sinopia95 (12/27/2016)
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1
Q:
Would this be good for water gilding to get the best burnish?
Asked by:
Linda
- 1/5/2017
A:
Yes, this chalk would be the ideal calcium carbonate to mix with rabbit skin glue, for a ground that can then receive layers of bole on top.
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Answer provided by:
sinopia95 (1/5/2017)
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1
Q:
Is there a difference between French chalk calcium carbonate whiting and powdered marble dust calcium carbonate whiting?
Asked by:
Nieves Saah
- 6/21/2018
A:
They are both Calcium Carbonate. The French Chalk is a bit denser in consistency, but both are used interchangeably for traditional gesso applications. The Marble Dust lends itself as a better filler in paints and plasters.
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Answer provided by:
sinopia95 (6/21/2018)
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1
Q:
French chalk is talc or talcum powder, which is magnesium silicate, isn't it? I'm confused that this French chalk appears to be identified as calcium carbonate. Is French chalk a term used for both different minerals? Is talc used in gesso?
Asked by:
Kat
- 9/23/2018
A:
The talc based French Chalk is a term commonly used in the tailoring industry and that is why it is showing up as the more common usage. Dörner calls a pure white calcium carbonate powder French Chalk and that is the definition that we use for our pure calcium carbonate French Chalk. We do not recommend making gesso with talc powder.
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Answer provided by:
sinopia95 (9/23/2018)
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1
Q:
What does PCD stand for, and is this precipitated chalk?
Asked by:
Kat
- 6/14/2017
A:
PCD is our product code and has no meaning beyond that. It is not precipitated chalk.
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Answer provided by:
sinopia95 (6/14/2017)
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1
Q:
What PH is calcium carbonate? Is it suitable for making gesso used in raised gilding on vellum? Would it need to be slaked first?
Asked by:
Paula
- 10/4/2023
A:
pH is 8.5 to 9.5 and is stable. The primary use for this calcium carbonate is the production of all kinds of gesso, made with natural glue (hide, rabbit, etc.). This chalk cannot be slaked.
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Answer provided by:
sinopia95 (10/4/2023)
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1
Q:
Hi, I was wondering what the micron size is for French Chalk?
Asked by:
Katherine
- 4/12/2024
A:
The average particle size of the French Chalk is 10 microns.
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Answer provided by:
sinopia95 (4/12/2024)
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Q:
Hello! Can you please tell me the particle size (micron or mesh) of the French chalk on your website? Thank you!
Asked by:
Randi Sider-Rose
- 9/27/2025
A:
The average micron size of 10 is now part of the description.
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Answer provided by:
sinopia95 (9/27/2025)
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Q:
In the past I’ve always bought marble dust and chalk from Kremer. Now I am looking to find a new source. You seem to be selling this product as French chalk and marble dust at the same time. What is the difference here?
Asked by:
Xenia
- 2/2/2026
A:
Our Calcium Carbonate is a hybrid powder, which can be used as a chalk and marble dust. It resembles what Kremer sold as Extra Fine Marble Dust and is whiter than their Champagne Chalk.
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sinopia95 (2/2/2026)
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