One of several hansas, it's an orangey yellow or sometimes called Hansa Yellow Deep. Frequently found as a single pigment but also popular in blends. A slow drier. Depending on the supplier, this pigment can be decent or just moderate in terms of lightfastness.

There were some interesting results from Golden's recent lightfastness testing in oils and it looks like PY65 may be quite reactive to Zinc White and certain formulations of Lead White.

In terms of health, we were amazed to hear that this might metabolize to a carcinogenic chemical and also cause methemoglobinemia. See Monona Rossol's work for more. The Artist's Handbook mentions that hansas are often heavily extended in less expensive paint ranges, and that the extenders reduce the transparency along with other problems.