• This topic has 18 replies, 11 voices, and was last updated 5 years, 1 month ago by !becca.

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  • June 10, 2012 at 7:10 pm #989782

    Hi, I am new to this forum. I would like to know which paints should I mix to create a Prussian Blue with acrylic paints. The new Prussian Blue Hue doesn,t look similar. Thank you.

    June 10, 2012 at 8:14 pm #1165251

    I'm a little behind the curve. Is actual Prussian Blue no longer available?

    If I were trying to mix an equivalent, I would mix a Phthalo Blue, Red Shade with a very small amount of Quinacridone Violet. Or just use Phthalo Blue, Red Shade straight.

    But I'm talking off the top of my head and I defer to others more experienced with acrylics.

    June 10, 2012 at 11:25 pm #1165252

    Alessandra thank you for you reply. Prussian Blue is no longer available in acrylics. There is a hue using Phthalo Blue, PV23 and black but it doesn't work like the real thing. I use to mix a nice grayish green using Prussian Blue and Raw Umber, but cannot get it with the new Prussian. After I posted I started experimenting with different blues and found a close mix to the green. Used Phthalo Blue green shade + Raw Umber and a bit of Payne's Gray. I wonder if other people know of a better combination. I am going working now on knowing my paints and how different types of light affect colors.

    June 11, 2012 at 3:46 am #1165246

    Prussian blue is alkali sensitive pigment. Therefore we can`t find genuine Prussian blue, Alizarin crimson, Strontium yellow and Viridian in acrylic medium.

    Actually, Prussian blue is darker than Phthalo in masstone. But, if we do not simulate genuine pigment with one other pigment we can use two or more pigment mixture. Or one mixture to make masstone and different mixture for tints.

    June 17, 2012 at 6:01 pm #1165241

    even one earth pigment is missing i understanded similar reasons pigment or acrylic medium dont like another.
    But queston for "Gurus" is possible this alkali thing is reason why some brushes dont like acryl paint ? (they are still selled for it but goed quickly bad). and depnds brand how is replaced. and which brand prussian blue hue ?

    June 18, 2012 at 8:29 pm #1165242

    At least Schmincke Primacryl has viridian green and uses pg18 which is selled at least some brands in viridian green. and factory gives very good lightfastness rating and i understanded their test paints with uv light and sun.

    June 19, 2012 at 11:53 pm #1165239

    You may be better off looking around at the various phthalo blues, and find one that comes closest. A Phthalo blue, green shade, etc. You will not be able to mix colors to approximate Prussian Blue. Some Phthalos come close. Any mix that contains a violet is, in my opinion, way off. Prussian blue leans green, and really is a unique color. As a side note, back when I painted with acrylics, I couldn't find a good PB hue, and ended up finding one that was right on, when I looked at the craft acrylics. Can't remember the name, but ifI do, will come back here, and post it. You may want to look a few versions in the craft acrylic section. They can be used with artist grade acrylics.

    Jim T

    January 3, 2013 at 5:36 pm #1165254

    I have an old tube of Liquitex Prussian blue, made of ferri-ammonium ferrocyanide. I'm betting the EPA took it away from us. It is a true Prussian blue, so it is not true that it can't be made with acrylic polymer.

    January 4, 2013 at 3:10 am #1165247

    Prussian blue is NOT for acrylic, but there are another emulsion vehicle which is safe to Prussian blue. It is PVA – polyvinyl acetate based emulsion. Unfortunately, PVA is not lightfast, can degrade and totally replaced (in artist paints) with much more stable acrylic.

    Phthalo blue is standard industrial blue, stable, and more brilliant pigment.

    Forget about Prussian blue, Alizarin crimson, Viridian, Zinc oxide (ZnS is ok), Strontium yellow, natural Van-Dyke brown, Asphaltum e.t.c Acrylic is NOT an oil – it is acrylic.

    But several beautiful pigments are for acrylic only, not for OIL :)

    January 4, 2013 at 7:42 pm #1165240

    I have an old tube of Liquitex Prussian blue, made of ferri-ammonium ferrocyanide. I'm betting the EPA took it away from us. It is a true Prussian blue, so it is not true that it can't be made with acrylic polymer.

    Regarding the toxicity of Prussian Blue:angel: :

    http://en.wikipedia.org/wiki/Prussian_blue#Medicine

    I wish liquitex still made it. :( I bet they stopped because of problems with long-term color stabiliy.

    Color is the most important element in painting - except for everything else

    January 5, 2013 at 3:24 am #1165248

    Regarding the toxicity of Prussian Blue:angel: :

    [url]http://en.wikipedia.org/wiki/Prussian_blue#Medicine[/url]

    I wish liquitex still made it. :( I bet they stopped because of problems with long-term color stabiliy.

    Or long-term emulsion stability.. Not sure about artist grade, but housepaint contain up to 0,3% ammonia which prevent coagulation. I guess, Prussian blue can neutralize this ammonia can cause emulsion coagulation in tube. Stable acrylic emulsion has PH index around 9.

    January 7, 2013 at 3:34 am #1165255

    Prussian blue is alkali sensitive pigment. Therefore we can`t find genuine Prussian blue, Alizarin crimson, Strontium yellow and Viridian in acrylic medium.

    Actually, Prussian blue is darker than Phthalo in masstone. But, if we do not simulate genuine pigment with one other pigment we can use two or more pigment mixture. Or one mixture to make masstone and different mixture for tints.

    Thanks for good advice.

    January 8, 2013 at 3:30 pm #1165253

    Gigalot – thanks for expert info.

    Its not "Yellow Ogre", it's "Yellow O C H R E".
    "I am not evil. I only paint that way".

    January 9, 2013 at 12:57 pm #1165249

    It is mostly a logical conclusion based on fragmentary information that I have managed to dig out from a variety of sources.

    Acrylic paint formulation is a manufacturers know-how :) But as I found, they use not only standard pigments, but also "standard" emulsion + secret additives. :D

    January 9, 2013 at 5:08 pm #1165243

    Prussian blue is NOT for acrylic, but there are another emulsion vehicle which is safe to Prussian blue. It is PVA – polyvinyl acetate based emulsion. Unfortunately, PVA is not lightfast, can degrade and totally replaced (in artist paints) with much more stable acrylic.

    Phthalo blue is standard industrial blue, stable, and more brilliant pigment.

    Forget about Prussian blue, Alizarin crimson, Viridian, Zinc oxide (ZnS is ok), Strontium yellow, natural Van-Dyke brown, Asphaltum e.t.c Acrylic is NOT an oil – it is acrylic.

    But several beautiful pigments are for acrylic only, not for OIL :)

    which pigments dont work with oil but acryl?

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