Naphthol Red AS is one of several colors with the same name but different pigment codes. According to some older sources, this pigment has a lightfastness about on par with genuine Alizarin Crimson (ASTM III). Somewhere between decent and fugitive, this pigment is not recommended. Additionally, in Monona Rossol's research it states that when this pigment is metabolized, a derivative of PR146 may create a carcinogen, so please consult her writing.
This site is community-supported. We may earn a commission (at no extra cost) when you buy through our links.
Naphthol Red AS
PR146
Alternate Name
Naphthol Carmine FBB
Pigment Description
Resources
PR146 pigment data from David G. Myers, The Color of Art Pigment Database, Artiscreation.com
General information about this class of pigments from Handprint,
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
May be Decent to Poor
For us ASTM III is too low. May range from II to III
Transparency
Transparent
Toxicity
Thought to be category of lesser concern
Treat all pigments and paints with studio safety protocols.
Chemical Name
Monoazo, 3-hydroxy-2-naphthanilide
Dry Pigments listing PR146
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.
