Zinc chromate or zinc yellow (other synonyms in Table 1) are widely used, for example,
In the metal and printing industry. The Danish Product Register (PROBAS) lists, where
47,400 entries for 110 products containing zinc chromate such as paints, floor coverings, stains and corrosion inhibitors (Flyvholm 1991).
Slightly soluble zinc chromate (ZnCrO4, CAS No. 13530-65-9) and readily soluble
Soluble, skin corrosive zinc dichromate (ZnCr2O7, CAS No. 14018-95-2) now available
Primarily used only as a laboratory chemical. In addition, the formation of zinc chromate is
Expected to be used in the passivation of galvanized metal parts using alkali metal chromates
or alkaline dichromate (Fregert et al. 1970).
The term zinc chromate is used for a number of substances and mixtures (Table 1), where,
However, it is rarely defined precisely in publications. In addition to significant differences in the composition of product groups described as zinc chromate,
In particular, the various products have different solubility in water, so the chromate ion (CrO42–) and dichromate ions (Cr2O72–) publish must be taken into account (Adams et al., 1976). This apparently also worked。Product use; simple paints mainly contain less dissociated products
ions (types II and III in Table 1), corrosion-inhibiting primers (chromate
Primer) (Burrows 1984) is made of zinc with potassium dichromate
The yellow types are more easily broken down into ions (IV and V in Table 1).
Except that many different products are included in the term zinc chromate
or zinc yellow, an accurate assessment of the sensitization of these products is not
It could be for other reasons too. Even in cases of contact dermatitis
Occurs only after handling zinc chromate, the content of potassium chromate or
Potassium dichromate is almost never available in the type of zinc chromate used, and,
Most importantly, the tests were not primarily done with the chromates that people use
has been in contact with or has been in contact with metal parts treated with it, but as a standard test
Petroleum jelly with 0.5% potassium dichromate.
With these limitations in mind, the observations listed below suggest that zinc
Chromate has a sensitizing effect.
Eight patients with oily dermatitis who were exposed as shipyard workers
Heavy oils, sometimes in combination with chromate-containing rust inhibitors
Patch test with 0.1% potassium dichromate (Anderson 1960).
65 of 250 workers at an auto plant wiped off primer
Car chassis suffers from contact dermatitis from wet procedures. dry paint
Contains 6.3% zinc chromate. Of the 58 people tested, 53 responded to 0.5% potassium
Dichromate (Engel and Calnan 1963).
One employed in the production of upholstered furniture and
In contact with 20% zinc chromate powder, reacts in "Standard"
Chromium Test"; after a workflow change to use TiO2
She became asymptomatic (Fregert and Gruvberger 1976).
Of the 45,000 employees of the two aircraft manufacturing companies, 755 suffered from dermatitis. 202
These individuals have skin conditions that have been shown to be work-related
investigation. In 132 workers (65.3 %), zinc chromate primer was the cause of
Dermatitis, these individuals, with 4 exceptions, reacted to treated metal pieces
with matter. Reactions appear as early as the first month after taking
work and average in the seventh month