Naples yellow

Lead antimonate [13510-89-9] (Naples yellow), Pb2(Sb0 2> mol wt 993.07, d = 6.58g/cm, is an orange-yeUow powder that is insoluble in water and dilute acids, but very slightly soluble in hydrochloric acid. Lead antimonates are modifiers for ferroelectric lead titanates, pigments in oil-base paints, and colorants for glasses and glazes (see Colorants for ceramics). They are made by the reaction of lead nitrate and potassium antimonate solutions, followed by concentration and crystallization. 

Naphthyl)ethyl isocyanate, chiral derivatizing reagent, 6 76t 1-Naphthyl-Al-methylcarbamate, 17 84 Napierian absorbance, 23 126 Naples yellow, 14 792 Napping, of staple-fiber non woven fabrics, 17 515... 

Naples yellow See lead antimonite. na-palz yeho ... 

Fig. 3.4 Square wave voltammograms of microsamples of (a) litharge, (b) massicot, (c) Naples yellow, (d) lead white, (e) tin-lead yellow, (f) minium, (g) chrome orange, and (h) chrome yellow attached to parafin-impregnated graphite electrodes. Electrolyte ...

Characterization of the binding media can be improved using plots of the potential separation between the peaks at -0.45 and -0.65 V, AEp, vs. W1/2 for a peak at -0.45 V. As shown in Eig. 3.8, data points for two proteinaceous binders, casein and bovine gelatin, applied to different pigments (lead white, minium, Naples yellow)... 

Fig. 3.7 Plot of (Eonset — Ep) vs. W] 2 for the peak at —0.45 V for different lead pigment plus binder specimens lead white plus proteinaceous binders squares), minium plus proteinaceous binders (solid squares), lead white plus oils (triangles), and Naples yellow plus oils (solid triangles). From square-wave voltammetric data using the conditions described in the caption of Fig. 3.3...

Fig. 3.8 Plot of the potential separation between the peaks at —0.45 and —0.65 V, AEp vs. Wj/2 for peak at —0.45 V for different lead pigment plus binder specimens solid squares = casein or bovine gelatin plus lead white or minium = squares lead white and Naples yellow plus poppy oil triangles = sunflower plus lead white and Naples yellow solid rhombs = egg plus lead white and minium. From square-wave voltammetiic data using the conditions from Fig. 3.3...

Others manganese blue cobalt, manganese violet naples yellow, bismuth vanadate ... 

The principal red and yellow pigments are Lead chromate chrome yellow, orange and red), zinc chromate zinc or buttercup yellow), barium chromate lemon yellow or yellow ultramarine) various products based on jerric oxide, hydrated (yellow) or anhydrous (red), both natural yellow and red ochres) and artificial Mars yellow, English red, etc.) red oxide oj lead minium or red lead) mercuric sulphide cinnabar, vermilion) antimony oxysulphide antimony cinnabar) cadmium sulphide cadmium yellow) basic lead antimonate Naples yellow). 

Lead Antimonate(V) Naples yellow. Approx PWSbOj,. 

Antimony lead oxide (SbzPbsOs) Diantimony trilead octaoxide EINECS 236-845-9 Lead antimonate Lead antimonate(V) Naples yellow Paris yellow. An orange-yellow pigment, A mixture of this material with carbonate and chromate of lead is also sold under this name. Cadmium sulfide, CPS, and a pale yellow ocher have been identified by this term used to stain glass, crockery and porcelain. Insoluble in H2O. 

In trade this pigment goes under various names, such as Naples yellow, jaune, solid yellow, antimony yellow. 

Among antimony compounds are antimony hydride (stibine, a gas) which is the most deadly, followed by antimony sulfide (stibinite), which is used in modern times in camouflage paints (because it reflects IR), and the antimony oxide/lead oxide and carbonate mixture Naples yellow, was used as a pigment and paint as well as a flame retardant in plastics (PVC) for their use in car components, in televisions and so on, because it quenches the fire by reacting chemically with burning materials, although it was also accused of causing cot deaths (see Chapter 10). 

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