Talk:Cadmium pigments

Azo pigments non-toxic?
Are azo pigments really non-toxic? I thought their use as food colouring was rather controversial. publunch


 * If you can legally put it on a sammich it's non-toxic. 60.240.186.77 (talk) 20:52, 16 August 2010 (UTC)

Wrong picture for this page
That picture says "Cadmium Orange Hue". A hue is a substitute pigment, a mixture of other pigments that reflects light similarly to the genuine pigment (although it may behave quite differently in other respects). So, that's not a real picture of Cadmium Orange. It is only an immitation. Anybody have the real thing and want to share it? --Metzenberg 01:28, 19 July 2006 (UTC)
 * "Hue" just means "same looking colour". As we are are talking about a digital picture, it's going to be pretty much indistinguishable from the real thing. And of course when you take a picture of it it turns from the genuine pigment to the "hue" anyway. Unless you have a monitor that replaces all Cadmium Oranges with real Cadmium Orange. 60.240.186.77 (talk) 20:52, 16 August 2010 (UTC)

This is your POV, provide some support for this statement!
The article currently contains this statement:


 * companies sell the cadmium-containing paints at premium price. Although the pigments are certainly more expensive, the premium price is often not fully justifiable, with reasons more in the marketing area then in the actual raw material cost.

The art materials field is extremely competitive. I am in the industry. My own company (Dick Blick Art Materials) sells roughly 20 brands of artist grade oil paint, and each of these brands also includes non-cadmium alternatives for yellows, oranges, and red. The situation is the same in acrylics and watercolors. We act only as resellers. Consumers are very sensitive to the price of cadmium pigments, and the manufacturers have every incentive to lower prices on those particular colors. The prices you see simply reflect the cost of producing those colors, in a competitive market. let me add one more thing. There is a lot of theft of paint tubes in retail stores (which is euphemistically called "shrinkage" by retailers). The thieves, especially those who want to resell what they steal (for example, on eBay), go for the cadmiums because they know that's what is easy to sell. Thus, the cost of carrying cadmiums in an art store is actually higher. --Metzenberg 01:42, 19 July 2006 (UTC)


 * It would be great to have a verifiable, external reference for this. PeterGrecian 13:04, 19 July 2006 (UTC)

Peter, I didn't change the page. I asked somebody else to. I'm in the industry, so I have a lot of knowledge, but my point of view is not neutral. Go look for yourself. I suggest you look at prices of cadmium pigments at Kremer Pigments or Sinopia Pigments online, and compare them to cheap iron oxide pigments such as Raw Sienna and Mars Black. Cadmium pigments are an order of magnitude more expensive, and that's why cadmium paints are expensive. Sinopia pigments price for Cadmium Yellow on August 16, 2006 is $60.00 for 500 grams. Cadmium Red costs $76.00 for 500 grams. Other cadmiums have similar prices. Most of their iron oxide pigments (Burnt/Raw Sienna or Mars Red/Black etc.) are around $15.00 for 500 grams, which is to say, the cost is basically the cost of packaging and shipping at each level in the distribution chain. --Metzenberg 08:11, 16 August 2006 (UTC)

Cadmium Yellow is the color of broken dreams!
At least that's what Stephen Colbert said. That makes it the truth, so someone put it up.


 * Neutrality Fail141.161.179.56 (talk) 13:25, 16 June 2011 (UTC)

Lightfast
I very much doubt that the azo-replacement for the inorganic cadmium yellow would be more lightfast. /Pieter Kuiper (talk) 11:00, 29 October 2008 (UTC)


 * I very much agree, in fact I have a source here that discredits that assertion: http://www.paintmaking.com/yellow.htm
 * (Momus (talk) 15:17, 25 November 2009 (UTC))


 * Thirded. I went ahead and deleted this claim from the article, adding the above as a reference. 71.41.210.146 (talk) 07:25, 31 July 2013 (UTC)

Fresco
It mentions in this article that Cadmium colours wouldn't be protected when used en fresco. That would be true if they weren't immediately destroyed by lime. Yellow Ochre, Mars Yellow, Uranium Yellow, and Naples Yellow are/were used instead. 60.240.186.77 (talk) 20:52, 16 August 2010 (UTC)

Cadmium pigments are not toxic
Though Cadmium is highly toxic, its pigments, being insoluble, are not toxic. Dunning P. 2009. Cadmium pigments. In Falkner E.B. & Schwartz R.J. (eds) High Performance Pigments.

dates?
some dates (of invention, etc) wouldn't go amiss - e.g. Van Gogh was still using chromium yellows which have been turning green with age. Vince Calegon 13:51, 9 March 2016 (UTC) — Preceding unsigned comment added by Vince Calegon (talk • contribs)

External links modified
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Cadmium Red = "Vivid reddish orange" = RGB #E30022 ?
That RGB triple is a red color with little bit blue, not "reddish orange". So description and RGB triple don't fit together, I think. --RokerHRO (talk) 15:52, 26 October 2020 (UTC)