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To the Editor:—In our article "Contact Eczema Due to Nail Polish" (Arch. Dermat. & Syph. 49:183 [March] 1944) we stated that we had found that one or more solvents elicited a positive reaction in 20 of 30 patients sensitive to nail polish. The solvents used in our study were M.H.P. Gum Solvent, Proprietory Solvent and No. 10 Solvent (benzine). The company which supplied them refused to divulge the chemical nature of these materials.
Dr. Harry Keil called our attention to the fact that toluene sulfonamide formaldehyde resin has been used in straw hat lacquer under the name of M.H.P. Gum Solvent. It appears that M.H.P. Gum Solvent is not a real solvent in the ordinary application of this term, and this name seems to be a commercial way of disguising its composition. M.H.P. Gum Solvent is in reality a synthetic resin, toluene sulfonamide formaldehyde, the same
Dobes WL, Nippert PH. CONTACT ECZEMA DUE TO NAIL POLISH. Arch Derm Syphilol. 1944;50(4):270. doi:10.1001/archderm.1944.01510160042020
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