PO = Pigment Orange; Most often used as pigment for ceramics, but has good potential as a artists paint The newer formulation, released in 2003, seems to have a coarser granulation in order to preserve the dark blue color. ), ** Aparently some HCBs' are produced as a by-product of Phthalocyanine pigment manufacture and so could potentually have trace amounts in the final product. Manganese Blue [GEN | BX.od | GB.od | HO.od | KA.p | LC.p | LK.od | OH.a.od.wd | RF.e | VA.o]; Manganese Blue Deep (mixture PB33 & PV16) [OH.o.w], Made by fixing barium manganate on a barium sulfate base. Oil Absorption: is given in g/100g or grams of oil per 100 grams of pigment   Key Top ^ Page Top^ (Ref Color Index 4th edition); More information at Boston Fine Arts CAMEO Art Materials Database; Mixed Metal Oxide (MMO) (Ref: The Use of Mixed Metal Oxide Pigments in Industrial Coatings

When the Color Index description is unavailable i have arrived at a general figure by manufacturer literature or personal experience. For phthalo blue RS (PB15:1) the average values are: 24, -23, -49, with chroma of 54 (estimated hue purity of 56) and a hue angle of 245; for phthalo blue GS (PB15:3) they are: 28, -36, -48, with chroma of 60 (estimated hue purity of 63) and a hue angle of 233. 77007) is an Ultramarine Blue (Sodium Aluminum Sulfosilicate) with chemical formula Na8-x[(Al,Si)12]O24(Sy)2.

Each of the numbers in the "Colour Index Constitution Number" has a specific chemical or compositional meaning; for more information Prussian blue is also used as a 'Chelating' Drug: "orally administered for clinical purposes to be used as an antidote for certain kinds of heavy metal poisoning, such as thallium and radioactive isotopes of caesium. Rembrandt cerulean blue is a finely granulating, average cerulean hue, dark valued with sutble texture and good saturation, a very pretty color.

Daniel Smith prussian blue is by contrast slightly redder, darker and more saturated in masstone, with an exquisite subtle texture and good lightfastness. Many pigments have a range of shades and hues. Lapis Lazuli Pigments Co., Ltd is a professional ultramarine pigments manufacturer which specializes in developing, producing and distributing of high-end ultramarine pigments. Intense deep blue in mass tone reddish to greenish bright blue in shades, has 'green shade' & 'blue shade' varieties.



Not listed above, the VanGogh prussian blue also had excellent lightfastness.) 'width=960,height=600,toolbar=no, scrollbars=yes' Usually an inessential pigment, PB60 mixes muted violets or maroons with quinacridone carmine (PR N/A), and is an effective portrait or figure shadow color in tints, but its darks and shadows can appear grayish or obtrusive. There is also some concern about disposing of the watse product. Copper ferrocyanide salt of Triphenylmethane; Indigo [BA.w | GR.o.w | NP.p1 | SCH.o(Mus).p | UT.o.w*]; How to make the pigment indigo at webexhibits.org; CAS See also the section on phthalocyanine pigments. I don't feel the pricey, dingy Old Holland product is worth using. Do not put a point on your brush with your mouth.
Unrated by the ASTM, my own and manufacturer tests assign it an "excellent" (I) lightfastness.

* seems to indicate sensitivity to acids or bases? The average CIECAM J,a,b values for cobalt blue deep (PB72) are: 29, -20, -62, with chroma of 65 (estimated hue purity of 67) and a hue angle of 252. Availability: In stock. effects color and lightfastness (Ref handprint.com).
The average CIECAM J,a,b values for cobalt turquoise (PB36) are: 39, -45, -17, with chroma of 48 (estimated hue purity of 49) and a hue angle of 201. These are the basic chemical names, or mineral names along with chemical composition. Indigo was originally the anil dye that put the blue in blue jeans.

***? Often inert pigments, extenders and fillers are added to the color pigments in student grade paints or to modify paint pigments with overly strong tinting strength, i.e. Email to a Friend.

Wikipedia), Can produce highly toxic hydrogen cyanide gas if heated to very high temperatures or treated with concentrated acid or ultraviolet radiation (Ref Tucson Art Hazards); (Ref. This is the C.I.