Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems when used as intended. See [Health and Safety ](https://www.dickblick.com/learning-resources/product-info/health-safety/ "Learning-resources/product-info/health-safety")for further information.
PR21-Pigment Red 21
PR13-Pigment Red 13
PR21-Pigment Red 21
organic
4-(E)-2-(2-chlorophenyl)diazen-1-yl-3-hydroxy-N-phenylnaphthalene-2-carboxamide
C23H16ClN3O2
Yellowish red
It is a mono azo pigment red, yellowish, mainly used in paint. Transparent, strong color.
Unlikely to cause harmful effects under normal conditions of handling and use.
Unknown.
PR13-Pigment Red 13
Toluidine
CAS 6535-47-3
UPC Code: 741389128106