Paris blue

Paris Paris blue Paris Convention Paris green Paris Green Paris green Paris green [12002-03-8] Paris law Parison Parity Parkerizing Parkes crust... 

Pariser, a. Paris. — — Blau, Paris blue — Grtin, Paris green. 

A distinction is made between the pure or Paris blues, and those that are mixed with alumina, or Berlin blues. The choice of the original raw materials naturally depends on the beauty and price of the article which is intended to be manufactured. For the finer kinds, one employs prussiate of potassa whioh has been purified by several successive crystallizations for the common blues, the crude solution of prussisite of potassa is almost always taken lastly, for inferior varieties, the mother-waters of the manufacture of the crystallized prussiute are used. 

The term iron blue pigments as defined in ISO 2495 has largely replaced a great number of older names (e.g., Paris blue, Prussian blue, Berlin blue, Milori blue, Turnbull s blue, toning blue, and nonbronze blue). These names usually stood for insoluble pigments based on microcrystalline Fe(II)Fe(III) cyano complexes many were associated with specific hues. A standardized naming system has been demanded by users and welcomed by manufacturers, and has led to a reduction in the number of varieties [3.177],... 

The purest and best qualities of Prussian blue are also sold as Paris blue the Prussian blue of commerce usually contains some of the above substances to give it a lighter colour. 

Iron Blue is the ISO designation (ISO 2495) for iron cyanide blue pigments of various composition, which are also known as Berlin Blue, Turnbull s Blue, Prussian Blue, Vossen Blue , Milori Blue, Paris Blue, French Blue, China Blue, Bronze Blue, Steel Blue, Ink Blue, among others. 

Figure 9 Measured correlations between (a) O3 and NOy, and (b) O3 and (NOy-NO ) (also known as NOJ, all in ppb. Measurements are shown from field campaigns in Nashville (pink dashes), Paris (blue diamonds), Los Angeles (Xs) and from four rural sites in the eastern US (green circles) (sources measurements reported by Sillman et al., 2002 (reproduced by permission of American Geophysical Union from J. Geophys. Res. 2002, in press) Trainer et al, 1993 (reproduced by permission of American Geophysical Union from 7. Geophys. Res. 1993, 98, 2917-2926)).

Manufacture.—Several different varieties of Prussian blue are on the marl The finest commercial Prussian blue goes under the name Paris blue, anc made by dissolving 50 kilos of potassium ferrocyanide in 250 kilos of water, < making simultaneously a solution of 43-45 kilos of ferrous sulphate (green vitr in 259 kilos of water, best in the presence of scrap iron to avoid formation of fe salts. The two solutions are now run simultaneously into a vessel contain 250 kilos of water, and the almost white precipitate which forms is allowed settle and is drained on a cloth filter. 

The best qualities of Prussian blue (known as Paris blue) are made as ab described. But inferior qualities (known as Mineral blue), are sold in wh the Paris blue is mixed with starch, gypsum, burnt and finely-ground kaolin, he spar, etc. 

Paraffin in explosives, 105 Paris blue, 82 Pauling furnace, 23, 34 Peat, 36, 43... 

Ferrocyanic acid H fefCNlg A colorless, crystalline acid obtained by treating ferrocyanldes with acids.Paris blue. ... 

Ferric Ferrocyanide. Hexakis(cyano )ferrate(4.) front J 4 > 0 4) Ferric hexacyanoferratefll) C.l. Pigment Blue 27 C.l. 77510 Berlin blue Chinese blue Hamburg blue mineral blue Paris blue Prussian blue. C FejN, mol wt 859.29. C 25.16%, Fe 45.50%. N 29.34%. Fe [Fe(CNUnusually contains some water and some alkali ferrocyanide. Prepn and list of refs Colour Index vol- 4 (3rd ed, 1971) p 4673. 

Iron BIuG. Iron Blue or Pigment Blue 27 has replaced the older names of Paris blue, Prussian blue, Berlin blue, and Toning blue, etc. It is ferric ammoniiun ferrocyanide [FeNH4Fe(CN)6l. It finds little use in plastics at present. It is mixed with chrome yellow to form chrome green. Chrome green offers a low cost opaqne green that finds some use in polyethylene film. Caution should be used as it has little alkali resistance. 

Copper group Hexacyanoferrate group Chalk Zinc hexacyanofer-rate(II) Zinc oxide Blue verditer Haarlem blue Paris blue Prussian blue... 

The terminology of Berlin, Paris and Prussian blues in German sources was clearly variable, although specific texts indicate particular relationships. Moreover, Prussian blue does not seem to be a widely used term in these sources whereas Berlin blue is. Gentele (1860), Bouvier (in a German edition of 1861) and Rose (1916), for example, all favour Berlin blue as the main term Mierzinski (1881) mentions Berlin blue as a mixture of Paris blue and white substances, and Prussian blue as a synonym for Paris blue Linke and Adam (1913) prefer Paris blue. 

Hexacyanoferrate group Paris blue Prussian blue Bouvier (1861) 37-38 Brachert (2001) 39-40 Gentele (1860) 220 Jannicke (1893) 71-72 Linke Adam(1913) 63 Mierzinski (1881) 31 Rose (1916) 226 Schulze (1826)... 

Paris blue, along with Berlin blue and Prussian blue (qq.v.), can be found in German hterature sources of the nineteenth and early twentieth centuries. The relationship between the three terms is somewhat complex for more information, see Berlin blue. In addition to describing Paris blue as a synonym for the violet-tinted kind of Prussian blue , Terry (1893) describes three compositions based on calcined mixtures of (a) sulfur, sodium carbonate, sodium sihcate and sodium aluminate, (b) china clay, sodium sulfate, sodium carbonate, sulfur and charcoal, and (c) sodium carbonate, orpiment, gelatinous alumina hydrate , clay and sulfur these appear likely to form ultramarine-related compounds (q.v.). 

Hexacyanoferrate group Antwerp blue Berlin blue Chinese blue Mineral blue New blue Paris blue... 

Elemental sulfur (q.v ) is known to occur as a sohd yellow material with two principal forms likely to be encountered in a pigment context - the amorphous type and the orthorhombic type (Sg). Sulfur is also used as a starting product in the synthesis of many pigments such as mosaic gold and Paris blue (qq.v.). More typically sulfur occurs within pigments as the sulfate or sulfide, of which there are many examples. The reader is referred to the following subgroups and links therein ... 

Mierzinski (1881) lists wasserblau ( water blue ) as a synonym for Paris blue (q.v.). 

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