Products bearing the CL seal of The Art & Creative Materials Institute (“Caution Label”) contain ingredients that are toxic or hazardous, but can still be safely used in controlled environments if directions on the container or packaging are followed. See [Health and Safety ](https://www.dickblick.com/learning-resources/product-info/health-safety/ "Learning-resources/product-info/health-safety")for further information.
Products bearing the CL seal of The Art & Creative Materials Institute (“Caution Label”) contain ingredients that are toxic or hazardous, but can still be safely used in controlled environments if directions on the container or packaging are followed. See [Health and Safety ](https://www.dickblick.com/learning-resources/product-info/health-safety/ "Learning-resources/product-info/health-safety")for further information.
Due to differences in users’ monitors, the colors presented are an approximation of the true color.
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PR188 -Naphthol Red
PR188 -Naphthol Red
organic monoazo
C33H24Cl2N2O6
This Naphthol Red is yellowish, with a high tinting strength and average drying time. It produces warmer shades and tints.
This Naphthol Red has excellent lightfastness, though it is generally not considered adequate for exterior use.
Naphthol Reds are not considered toxic. They may cause eye, skin, or respiratory irritation. Contact with dry pigment should be avoided.
Naphthol pigments are actually dyes that are "laked" to form pigments. First developed by the German chemical company Hoechst A.G. before World War I, their use in artist paints began in the 1920s.
UPC Code: 0884955030134
ASIN #: B00GTQ2YTY