All Chromatography Page 3
Chromate Of Mercury
has been improperly classed as a red with vermilion, for though it is of a bright ochrous red in powder, when ground it becomes a bright ochre-orange, and affords with white very pure orange tints. Nevertheless it is a bad pigment, since light soon ...
is an agreeable apple-green colour, prepared from arseniate of potash and salts of chromic oxide. It is durable, but possesses no advantages over the chrome oxides, and is of course poisonous. ...
From boiling, hot, or cold solutions of bichromate of potash and hyposulphite of soda in excess, we have obtained an agreeable citrine-brown colour, varying in hue and tint according to the mode of preparation and proportions of materials employed. ...
Our work might be considered incomplete without some allusion to the coal-tar colours, even though they are rather dyes than pigments, not possessing sufficient stability for the palette. To avoid repeated reference, we have preferred grouping them ...
Rinman's Green, Vert de Zinc or Zinc Green. True cobalt green is made by igniting a very large quantity of carbonate of zinc with a very small quantity of carbonate of cobalt. To give a green tint to an enormous proportion of the former, an inapprec...
There is obtainable from cobalt a very rich marrone brown, which, like many other colours, is more beautiful while moist than when dried. Permanent, if carefully made and most thoroughly washed, it is an expensive compound, and must rank among those...
Cobalt Prussian Blue
Gmelin states that yellow prussiate of potash yields with a solution of oxalate of sesquioxide of cobalt a blue resembling Prussian blue--that, in fact, there can be obtained a Prussian blue with a base of cobalt instead of iron. In the moist state,...
are obtainable ranging from the richest crimson purple to the most delicate violet. We have produced them by wet and dry methods, varying in brilliancy and beauty, but characterised generally by want of body, and frequently by a smalt-like grittines...
There are obtainable from cobalt by different processes rose and red colours of more or less beauty and intensity, but all vastly inferior to those of madder, in whose absence alone they could gain a place on the palette. Durable as a rule, they are...
though little known and not on sale, has been strongly recommended by Bouvier as one of the best blacks that can be used. Soft without being greasy, light, almost impalpable, even before being ground, it gives tints of a very bluish gray when mixed ...
are now seldom or never employed as artists' pigments. The following are the principal varieties:-- ...
is obtained by precipitating sulphate of copper with borax, washing the residue with cold water, and, after drying, igniting it, fusion being carefully avoided. In this manner, a pretty yellowish green is produced, which upon longer ignition assumes...
varying in hue, is obtainable, in the form of prussiate, &c., but cannot be recommended, however made. ...
may be prepared by several methods, but the colour is in no case so fine as Scheele's or Schweinfurt green, nor is it as stable. ...
A somewhat finely coloured red oxide is produced by exposing to a white heat for twenty minutes, a mixture of certain proportions of blue vitriol, mono-carbonate of soda, and copper filings. The product, however, is affected by impure air, and is ot...
Browns And The Cold Semi-neutral Grays Marrone Is Practically To
Also Called Scarlet Chrome Is A Bright Chromate Of Lead Of An
Belong The Dutch And Flemish Schools; The Sensible Which Aims At
Composition Chemical Analysis Has Shown Several Of The Blues To Be
Less Known As English Red Prussian Red And Scarlet Ochre True
Olive In Dark Green; Russet And Citrine In Dark Orange The
Pitch And [greek: Kallos] Ornament The Blue Is Named Pittacal
Pigment The [greek: Kinnabari] Of The Greeks And The Minium--a Term
Peculiar Red Mineral Orange
For Artists Such Are Harding's And Macpherson's Tints Composed Of
We Have Adopted The Term Marrone Or Maroon As It Is Sometimes Called
Softer Texture Some Of My Friends Says Bouvier Call It Beggars'
Russet Hues Of Autumn Foliage Where Purple And Orange Have Broken Or
Uniform Colour Thus Composed Is The Citrine Colour Of Fruit And