Lead chromate, uses

Nestmann ER, Matula TI, Douglas GR, et al. 1979. Detection of the mutagenic activity of lead chromate using a battery of microbial tests. Mut Res 66 357-365. [Pg.555]

Chrome Yellows. Yel paint pigments contg 95% or more PbOO (Ref 1) (See also Lead Chromate). US Govt requirements and tests are given in Ref 2... [Pg.81]

Analysis of Lead Chromate, which is intended for use in US non-gaseous delay powders is described in Ref 3. The method includes the following tests ... [Pg.64]

The very slight solubilities of lead sulfate, lead oxalate, and lead chromate (chrome yellow) in water serve to remind us of the similarity... [Pg.273]

A few dyes and pigments are considered to be carcinogenic, by US regulatory agencies. Benzidine dyes have already been mentioned. Lead chromate pigments contain both lead and hexavalent chromium, and as such are defined by EPA as carcinogenic. Experimentally,... [Pg.92]

Thus, if the aqueous solution that contains CtOl is made acidic by adding a source of the hydronium ion, the equilibrium adjusts to produce more Cr207. If the hydronium ion is removed by reaction with the hydroxide ion or other base, the equilibrium adjusts to produce more CrO. Let us assume that we have an aqueous solution containing Cr(VI) as either chromate or dichromate and Cr(III) in the form of CrCl3. The addition of a source of the Pb + ion, such as lead(II) sulfate, will precipitate Cr(VI) as the insoluble PbCr04 while leaving Cr(III) in the supernatant as Cr. Thus, a spedation of chromium via coprecipitation can be realized. Hence,... [Pg.223]

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