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A photochemistry lab at Harvard collaborated in the research by providing measurements of the UV absorbance patterns of ferric iron under extreme acidic conditions, in an attempt to mimic the even more extreme Venusian clouds.

As a precaution, however, we are monitoring the situation due to the use of ferric sulphate in some waste treatment works.

The ferric red of Central Africa appeared in furrowed hills covered in sparse emerald grass.

A chemical spill caused sodium hypochlorite to mix with ferric sulfate at a Birmingham Water Works treatment plant near Highway 280, AL.com reported.

Authorities tell news outlets that irritating gas caused by a mixture of ferric sulfate and sodium hypochlorite was causing breathing problems for about a dozen workers.