chromates

The alkalis, acids, chromates, bleaching agents, oils, salt and various compounds used in dyeing are potential skin irritants.

'Eco-friendly' fur? That's fuzzy thinking 2008

For example, in the chromates SO4 is replaced by the compound CrO4.

Composition of rocks 2007

To top it off the panel of NRC folk are worried that the highly oxidizing Martian environment could have formed toxic chromates from the chromium, which can be extremely harmful to humans.

NASA Told Not to Look for Life on Mars | Impact Lab 2002

According to New Scientist the Apollo astronauts found that lunar dust worked its way into their capsule during their three-day visit to the Moon, and the NRC are concerned that the same thing could happen on Mars, only the invading dust would be sticky with harmful doses of chromates, which could easily be inhaled.

NASA Told Not to Look for Life on Mars | Impact Lab 2002

Sabatier's earliest researches concerned the thermochemistry of sulphur and metallic sulphates, the subject for his thesis leading to his doctorate, and, in Toulouse, he continued his physico-chemical investigations to sulphides, chlorides, chromates and copper compounds.

Paul Sabatier - Biography 1966

Like all the chromates of lead, it is characterized by power and brilliancy; but also by a rankness of tone, a want of permanence, and a tendency to injure organic pigments.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The scarcity of the metal precludes their present introduction as pigments, but if the chromates of thallium were found to resist the action of light and air, and not to become green by deoxidation of the chromic acid, they might possibly prove fitted for the palette.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The chromates are often mixed with sulphate of lead, as well as with the sulphates of baryta and lime.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

The yellow and orange chromates of lead, for instance, withstanding as they do the action of the sunbeam, become by time, foul air, and the influence of other pigments, inferior to the ochres.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field

It is, however, much more readily oxidized than sulphate of lead; and hence the thallium chromates would doubtless soon regain their former hue on exposure to a strong light.

Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field