[Chromate eczema in food, domestic and cleaning occupations].

No chromium in the form of chromate was found in flour and baking powders. Contradictory reports published elsewhere have not been substantiated. The occasional incidence of chromate allergy observed in the domestic services trades, bakeries, curing houses and bottling plant were found to be due to traces of chromate in the following substances: wood ash 0.23 ppm, lignite ash 0.05 to 1.7 ppm, refractory brick 0.5 to 0.9 ppm, certain alkaline scouring agents 0.1 to 0.2 ppm, suds produced when washing chromate-containing glasses 0.13 to 1.61 ppm. Furthermore, when surface treating heated cr-ni sheet steel sheet panels of 10 square centimetre size with alkalis or organic acids (acetic acid) it was possible to dissolve 0.33 to 60.0 micrograms of chromium as chromate.