Search results
Results from the WOW.Com Content Network
Lead(II) chromate is an inorganic compound with the chemical formula Pb Cr O 4. It is a bright yellow solid that is very poorly soluble in water.
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 or Pb(Sn,Si)O 3 ...
Phoenicochroite is a basic lead chromate, Pb 2 CrO 5 with dark red crystals, and vauquelinite a lead and copper phosphate-chromate, Pb 2 CuCrO 4 PO 4 OH, with brown or green monoclinic crystals. Vauquelinite was named after Louis Nicolas Vauquelin , who in 1797 discovered (simultaneously with and independently of M. H. Klaproth) the element ...
Formula 0 °C 10 °C 15 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C ... Lead(II) chromate: PbCrO 4: 1.71×10 −5: Lead(II) ferrocyanide: PbFe ...
Phoenicochroite, also known as melanochroite, is a lead chromate mineral with formula Pb 2 OCrO 4. It forms striking orange red crystals. It was first discovered in 1839 in Beryozovskoye deposit, Urals, Russia. [2] It is named from the Greek word φοίυικος for "deep red" and χρόα for "color", in allusion to its color. [2]
The company sourced cinnamon manufactured in Ecuador that was tainted with lead chromate, an additive that seeks to brighten the spice. There were at least 500 cases across the U.S. of children ...
For example, lead chromate, a bright yellow pigment, is sometimes added to turmeric to boost its color. The FDA has found that imported spices, especially from countries with lax regulations, ...
That’s because the lead-to-chromium ratio in the applesauce was consistent with that of a chemical compound called lead chromate, which contains both lead and chromium-6.