lead chromate

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Related to lead chromate: lead carbonate, Barium chromate, lead bromide, Potassium chromate

lead chromate

(lĕd)

A poisonous yellow crystalline compound, PbCrO₄, used as a paint pigment. Also called chrome yellow.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

lead chromate

(Elements & Compounds) chem a yellow solid used as a pigment, as in chrome yellow. Formula: PbCrO4

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

lead′ chro′mate

(lɛd)

n.

a yellow crystalline compound, PbCrO₄, toxic, insoluble in water.

[1900–05]

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Noun

lead chromate - a poisonous chromate of lead used as a pigment in paint

chromate - any salt or ester of chromic acid

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The gaseous combustion product were first passed over heated copper oxide and lead chromate then led into the absorption train.

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Many of the yellow or orange colorants, such as lead chromate or metanil yellow, may represent a health risk.

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Examples include red lead, chrome yellow (lead chromate), and moly orange.

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Lead chromate pigments have been banned from consumer plastics in Europe since 2015, and users elsewhere are under pressure to find nontoxic alternatives, especially for toys, food-contact applications, and other consumer products.

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For example, the REACH regulation in Europe has helped close BASF's lead chromate business.

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Lead chromate, PbCr[O.sub.4], also known as chrome yellow, was a standard plastic colorant in the era in which these toys were made.

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Originally, the paints consisted of a mixture of lead chromate, sulfate, and chromate sulfate particles in a linseed oil matrix.

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Lead chromate, a component in the yellow pigment of the time, was shown in the study to be both chemically and structurally unstable.

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Other lead compounds, like vivid yellow lead chromate (PbCrO4), were used as coloured pigments.

BEYOND THE SURFACE

Lead chromate, iron oxide, and copper phthalocyanine blue pigments were included in the formulations to prepare yellow, red, and blue coatings, respectively.

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On 7 July, the ECHA launched a public consultation on its draft recommendation of eight substances to be included in the authorisation list (Annex XIV of the REACH Regulation): diisobutyl phthalate (DIBP), diarsenic trioxide, diarsenic pentaoxide, lead chromate, lead sulfochromate yellow (C.I.