Photodecomposition of N-alkyl-N-nitroso-urethanes

Details Photodecomposition of N-alkyl-N-nitroso-urethanes Photodecomposition of N-alkyl-N-nitroso-urethanes

Jun 1963

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1963natur.198.1089s&link_type=abstract

Nature, Volume 198, Issue 4885, pp. 1089 (1963).

Computer Science

1

Scientific paper

IN the course of investigations of the carcinogenic action of N-methyl-N-nitroso-urethane (NMU)1 it was observed that dilute solutions of this compound in aqueous ethanol, when left in direct sunshine, became decolorized and deposited colourless crystals. Solutions kept in the dark remained yellowish and free from crystalline deposit. This observation was confirmed by exposing 1 per cent solutions of NMU in 10 per cent aqueous ethanol to direct sunshine, or to the light from a mercury-vapour lamp. The solutions became decolorized in the course of several hours or days with deposition of colourless crystals. Red, green, yellow or orange filters, but not blue ones, protected the NMU solutions from this type of decomposition, indicating that the effect is due to the light near the ultra-violet range.

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