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. 2020 Jan 31;95(2):194–199. doi: 10.1016/j.abd.2019.09.026

Table 1.

Standard Brazilian series of the contact test recommended by the Brazilian Group of Studies on Contact Dermatitis, 1996.

Substance Concentration Substance Concentration
Anthraquinone 2.0% Neomycin 20.0%
Balsam of Peru 25.0% Nitrofurazone 1.0%
Benzocaine 5.0% Parabens (2) 12.0%
Potasssium dichromate 0.5% Paraphenylenediamine 1.0%
P-tertiary butylphenol 3.0% Perfume-mix (3) 8.0%
Carba-mix (1) 3.0% PPD-mix (4) 0.6%
Cobaltchloride 1.0% Promethazine 1.0%
Colophony 20% Propyleneglycol 1.0%
Ethylenodiamine 1.0% Quaternium 2.0%
Formaldehyde 2.0% Quinoline-mix (5) 5.0%
Hydroquinone 1.0% Epoxyresin 1.0%
Irgasan 1.0% Nickelsulphate 5.0%
Kathon CG 0.5% Turpemtine 10.0%
Lanolin 20.0% Thimerosol 0.1%
Mercaptobenzothiazole 1.0% Thiuram-mix (6) 1.0%

* All substances diluted in petrolatun, with the exception of formaldehyde diluted in water.

(1) Diphenylguanidine; (2) Butyl, ethyl, propyl, methyl paraben, 3.0% each; (3) Eugenol, isoeugenol, cinamic alcohol, cinamicaldehide, geraniol, hidroxicitronellal, alpha-amyl cinamic alcohol, oakmoss absolute, 1.0% each; (4) N-phenyl-n-cyclo-hexyl-p-phenylenediamine, N-iso-N-phenyl-p-phenylenediamine, N-diphenyl-p-phenylenediamine, 0.2% each; (5) Clioquinol, clorquinaldol, 3.0% each; (6) tetramethylthiuramdisulfite tetramethylthiurammonosulfite tetraetiltiuramdisulfite dipentametilenethiurammonosulfite, 0.25% each.

Source: GBEDC, 2000.