Slate Black or Slate Grey/Gray. We are weirdly enchanted by this color, as it is the basis for several off-the-beaten-path grey earth tones such as French Ardoise Gray. Made of Hydrated Aluminum Silicate or just "slate". It's fun to experiment with mixing the lighter forms of this pigment with lemon yellows. Monona Rossol mentions limits for respirable dust called PNOS, see her work for more.
This site is community-supported. We may earn a commission (at no extra cost) when you buy through our links.
Slate Black
PBk19
Alternate Name
Gray Hydrated Aluminum Silicate
Pigment Description
Resources
PBk19 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com,
Rossol, Monona. The Artist's Complete Health and Safety Guide. New York, NY : Allworth Press, 2001. The book is rather dated, updated information is available from her website.
Stats
Lightfastness
Thought to be excellent
Considered ASTM I, excellent.
Transparency
Semi-Opaque
Toxicity
Thought to be category of lesser concern
Treat all pigments and paints with studio safety protocols.
Chemical Name
Powdered Slate, hydrated aluminum silicate
Dry Pigments listing PBk19
DISCLAIMER: Please note that we are not experts in health and safety and we are not toxicologists, please consult the proper experts. We are not liable for any issues that may arise from the use of our website or its contents. The information contained in this site is provided without warranty or guarantee of any kind. We do not necessarily endorse any other website that are linked from our site. For any important pigment specs, please reference the manufacturer details. If you discover errors or omissions, please reach out through our contact form. Thank you.
