Reference

Lead salts of 2,4-dinitro-1-naphthol and 2,4,5-trinitro-1-naphthol

Lead salts of 2,4-dinitro-1-naphthol and 2,4,5-trinitro-1-naphthol. Hasue, Kazuo; Okazaki, Kazumasa (Dep. Chem., Natl. 2364-47-8 and 605-69-6 are also occured in this study. Def. Acad., Yokosuka, Japan). Kogyo Kayaku, 36(6), 320-5 (Japanese) 1975. CODEN: KOKYBR. DOCUMENT TYPE: Journal CA Section: 50 (Propellants and Explosives) Pb salts of 2,4-dinitro-1-naphthol(I) and 2,4,5-trinitro-1-naphthol(II) were prepd. and their sensitivity characteristics were investigated. Normal Pb salt and mono-, di-, and tribasic Pb salts of I and II were obtained by the reaction of Pb(NO3)2 with I and II in aq. NaOH soln. These compds. had low sensitivities to heat, impact, friction, and elec. spark. In the comparison of 50% initiation, increasing basicity decreased the sensitivity to impact but increased that to friction and elec. spark. .

Liquid chromatographic determination of 2,4-dinitro-1-naphthol and 1-naphthol in External D&C Yellow No

Liquid chromatographic determination of 2,4-dinitro-1-naphthol and 1-naphthol in External D&C Yellow No. 7. Goldberg, Allen L.; Calvey, Robert J. (Div. Color Technol., Food Drug Adm., Washington, DC 20204, USA). J. Assoc. Off. Anal. Chem., 66(6), 1429-32 (English) 1983. CODEN: JANCA2. ISSN: 0004-5756. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) A sensitive, reproducible method that uses liq. chromatog. in the reverse phase mode with a ODS-3 C-18 column is described for detg. 2,4-dinitro-1-naphthol [605-69-6] and 1-naphthol [90-15-3] in External D+C Yellow No. 7 [846-70-8]. With this method, these 2 compds. are eluted in a reproducible pattern by increasing the org. nature of a buffered mobile phase.There are some commonly used reagents with their cas registry numbers 605-69-6 and 846-70-8 in this article. Av. recoveries of 2,4-dinitro-1-naphthol and 1-naphthol added to samples of External D+C Yellow No. 7 at levels ranging from 0.003 to 0.20% were 103.9 and 94.7%, resp. .