Patch testing with sodium tungstate.
Hard metal contains about 90% tungsten carbide. In an investigation of the skin of 853 individuals who are still working or had previously worker in hard metal manufacture, sodium tungstate was included in a patch test with a panel of substances from the environment of the employees. No allergic reactions to tungstate were found. However, irritant pustular reactions appeared in 2.0% of the patch tests. The pustular reactions were often reproducible.
D003877:Dermatitis, Contact / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D010328:Patch Tests; D012882:Skin Tests; D014414:Tungsten; D017973:Tungsten Compounds
D017973:Tungsten Compounds; C025399:sodium tungstate(VI); D014414:Tungsten