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Zinc yellow

Zinc yellow became an important corrosion-inhibiting pigment for aircraft during World War II. However, the war production rate of 11,000 t/yr has not since been reached. Now, 2inc yellow is widely used for corrosion inhibition on auto bodies, light metals, and steel, and in combination with red lead and ferric oxide for stmctural steel painting. [Pg.146]

Zinc yellow is made by a variety of processes, all based on the reaction of 2inc compounds, chromates, and potassium salts in aqueous solution. If products free of chloride and especially sulfate are desired, they are excluded from the system. In one process, for example, 2inc oxide is swollen with potassium hydroxide and the chromates are added as a solution of potassium tetrachromate [12422-53-6] (194). [Pg.146]

Cellulose acetate Silica gel Scoured wool Sawdust Rayon waste Fluorspar Tapioca Breakfast food Asbestos fiber Cotton linters Rayon staple Starch Aluminum hydrate Kaolin Cryolite Lead arsenate Cornstarch Cellulose acetate Dye intermediates Calcium carbonate White lead Lithopone Titanium dioxide Magnesium carbonate Aluminum stearate Zinc stearate Lithopone Zinc yellow Calcium carbonate Magnesium carbonate Soap flakes Soda ash Cornstarch Synthetic rubber... [Pg.1198]

Chemical Designations - Synonyms Buttercup yellow Zinc chromate (VI) hydroxide Zinc yellow Chemical Formula 4Zn0 K20 4Cr0 3H20. [Pg.401]

This compound is deposited on the metal surface unless the solution is sufficiently acid to dissolve it as soon as it is formed. The him also usually contains the oxide of the metal being treated, together with alkali metal (when this is present in the treatment solution) perhaps in the form of a complex basic double chromate analogous to zinc yellow. [Pg.723]

The simplest method of chromate sealing involves immersion in a dilute alkali chromate or dichromate solution followed by washing retained chromate imparts a yellow colour to the film. More substantial amounts of slightly soluble chromate can be deposited in the thicker type of absorbent anodic film by a method developed by Dr. L. Whitby at High Duty Alloys Ltd. In this, anodised parts are immersed first in a boiling 30% solution of sodium chromate and then in a boiling 2% solution of zinc nitrate. Residues of the first solution in the film react with the second solution to give a substantial yellow deposit of a basic zinc chromate, probably similar in composition to zinc yellow. [Pg.729]

The reaction of zinc oxide, hydrochloric acid, sodium dichromate, and potassium chloride produced zinc yellow as a precipitate, which is a complex compound of zinc, potassium, and chromium. The complex compound is further subjected to filtration, washing, drying, milling, and packaging for use. [Pg.929]

Zinc oxide reacts with potassium dichromate in solution in the presence of sulfuric acid to form a greenish-yellow pigment, zinc yellow or citron yellow [11103-86-9], 4ZnO dCrOs K2O 3H2O... [Pg.991]

Zinc Sulfate Heptahydrate Zinc Sulfocarbolate Zinc Sulfophenate Zinc Vitriol Zinc Yellow Zirconium Acetate Zirconium Acetate Solution Zirconium Nitrate Zirconium Nitrate Pentahydrate... [Pg.94]

ZINC CHROMATE Buttercup yellow, Zinc chromate (Vl)hydroxide, Zinc yellow NL 1 0 0... [Pg.110]

Chromate pigments chrome green molybdate red chrome orange chrome yellow, zinc yellow, alkaline earth chromates ... [Pg.11]

Zinc chromate ZnCr04 [13530-65-9] chromic acid-zinc salt (1 1) zinc yellow C.I. Pigment Yellow 36 lemon yellow powder insoluble... [Pg.200]

Zn chromate is not important commercially, but its complex with K chromate, known as Zinc Yellow, is used as a corrosion inhibiting pigment(Ref 3) especially in aircraft construction (Refs 4 6)... [Pg.66]

These are mixtures of a yellow with a chromium basis with a blue, usually Prussian blue, and are often improperly termed chrome greens. The commoner ones consist of chrome yellow and Prussian blue, often mixed with various other substances such are green, vermilion and the like. Use is sometimes made also of mixtures of zinc yellow and Prussian blue (in some cases improperly termed zinc greens). [Pg.395]

Zinc chromate (ZnCr04), also known as zinc yellow (with the approximate formula 4Zn0K204Cr03-3H20), is used as a pigment because of its excellent corrosion-inhibiting effect both in mixed paints and as a priming coat for steel and aluminum. [Pg.561]

This pigment, also called zinc yellow, is produced by reacting an aqueous slurry of zinc oxide or hydroxide with dissolved chromate ions, followed by neutralization, or by precipitation of dissolved zinc salts with dissolved chromate salts, followed by washing, filtration, drying, and milling processes [5.56]. Previously zinc yellow used to hold a major share of the anticorrosive pigment market... [Pg.213]

ZINC SALT (1 2) ZINC CHROMATE HYDROXIDE ZINC CHROMATE(VI) HYDROXIDE ZINC HYDROXYCHROMATE ZINC YELLOW ... [Pg.366]

SYNS BUTTERCUP YELLOW CHROMIC ACID, POTASSIUM ZINC SALT (2 2 1) CITRON YELLOW POTASSIUM ZINC CHROMATE ZINC CHROME ZINC YELLOW... [Pg.1171]

See other pages where Zinc yellow is mentioned: [Pg.1088]    [Pg.1088]    [Pg.420]    [Pg.144]    [Pg.144]    [Pg.145]    [Pg.146]    [Pg.284]    [Pg.530]    [Pg.530]    [Pg.926]    [Pg.929]    [Pg.930]    [Pg.74]    [Pg.1037]    [Pg.45]    [Pg.45]    [Pg.1585]    [Pg.380]    [Pg.393]    [Pg.1447]    [Pg.1447]    [Pg.1595]    [Pg.1944]   
See also in sourсe #XX -- [ Pg.401 ]

See also in sourсe #XX -- [ Pg.929 ]

See also in sourсe #XX -- [ Pg.9 , Pg.991 ]

See also in sourсe #XX -- [ Pg.401 ]



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White Zinc Oxide - Yellow

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