Learn to paint in Acrylic paints - Step by Step
This also came up in Paul's post and I don't recall doing an update. In early 2015 The jury was still out regards the future availability of cadmium based pigments. There was a formal proposal in Europe that would have completely banned cadmiums due to health and environmental concerns.
Later in the year the proposal was rejected, partially based upon submissions from artists, professional organizations, and manufacturers. Had it been passed, these pigments would likely have disappeared from the global market due to the more limited market base.
While the newer non-mineral pigments like Hansa Yellow have nice colour, I find them too transparent for all situations. The opacity that seems to be a liability for cadmiums in some mixes is also an asset at times. With the interest in replacing cadmiums with less toxic pigments, we are seeing an increase in the number of cadmium "hues" on the market. These are cadmium-free, being comprised of pigment mixtures designed to look like the colours they are trying to replace. For the most part they are inferior pigments and much more transparent, so they have little in common with the cadmiums. If you wish to avoid the cadmiums, you probably should try synthetics like Hansa yellow, Perylene or Naphthol Red, or the Quinacridones and leave the hues alone.
Hues are mixtures, and the pigments used will vary by manufacturer. The only one worthy of note is Alizarin Crimson, referred to as "hue" or "permanent". The original pigment was very nice to work with and rather unique, but did have a major issue with fading. Some other hues like Naples Yellow and Van Dyke Brown had safety concerns; they can be fairly easily mixed when needed. Golden and Liquitex use different pigments for Alizarin, so they are not freely interchangeable.
Non-mineral pigments may have relatively short lifespans from a commercial perspective. Their primary markets are the textile and automotive industries, so pigments can disappear quite quickly when their needs change. Several Quinacridones have already fallen victim to changing market demands.
When trying to match perceived colours it is worth remembering that the way our eyes and brains work together makes it unlikely that many of us "see" the exact same colour anyway. The relative values and relative colours that we use are far more important than the specific pigments.
I survived when they took my Kodachrome away, guess I can deal with losing a pigment or two along the way . . .