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Aureolin (sometimes called cobalt yellow) is a pigment sparingly used in oil and watercolor painting.Its color index name is PY40 (40th entry on list of yellow pigments). It was first made in 1831 by Nikolaus Wolfgang Fischer in Breslau characterizing it as "Doppelsalze" or double-salts [1] and its chemical composition is potassium cobaltinitri
Chromium pigments. Chrome yellow or crocoite (PY34): lead chromate (PbCrO 4). Cobalt pigments. Aureolin or cobalt yellow (PY40): potassium cobaltinitrite (K 3 Co(NO 2) 6). Iron pigments. Yellow ochre (PY43): a naturally occurring clay of monohydrated ferric oxide (Fe 2 O 3 ·H 2 O). Lead pigments. Naples yellow (PY41). Lead-tin-yellow: PbSnO 4 ...
Chromium pigments: chrome yellow and chrome green (viridian) Cobalt pigments: cobalt violet, cobalt blue, cerulean blue, aureolin (cobalt yellow) Copper pigments: azurite, Han purple, Han blue, Egyptian blue, malachite, Paris green, Phthalocyanine Blue BN, Phthalocyanine Green G, verdigris
It is a yellow solid that is poorly soluble in water. The compound finds some use as a yellow pigment under the name Indian Yellow. The salt features potassium cations and an trianionic coordination complex. In the anion, cobalt is bound by six nitrito ligands, the overall complex having octahedral molecular geometry. The oxidation state of ...
Ceramic colorants are added to a glaze or a clay to create color. Carbonates and oxides of certain metals, characterize most colorants including the commonly used cobalt carbonate, cobalt oxide, chrome oxide, red iron oxide, and copper carbonate. These colorants can create a multitude of colors depending on other materials they interact with ...
Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl 2 O 4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes. Cobalt occurs naturally as only one stable isotope ...
The law will ban six of the nine FDA-approved artificial food dyes –– Red No. 40, Yellow No. 5, Yellow No. 6, Blue No. 1, Blue No. 2 and Green No. 3 –– in public school food and drinks by ...
Yellow May contain: Cadmium sulphide [9] Azo compounds [11] Pigments used for white ink, to brighten the yellow color; Green May contain: Cobalt or chromium oxide [11] Pthalocyanine green, known as phthalo green [13] A mix of cobalt and lead chromate (chrome yellow) [9] Blue May contain: Cobalt, [11] such as cobalt aluminium oxides, known as ...
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