178 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS . . Red .• m-IO •.o/ * Fluorescenf ø ' .... t t III ,• spots under . v•le• . II• 9 •. uv light, •lue• • t •8 ,•• Lit. re,.: 7 Gr• / "// ••- / iirS• • / _• / • Ill • • Prec•ted SILICA plates (lOcm) •$ Solvent: Ethylacetate- Methonol-conc, Amm•io 15 6 (b) •0 •? .,,--111-5• • • / Blue • • Violet f • / • Rf of the •in s•s. Grin Red Fluorescent under UV light Lit. ref,: II PreCooted CELLULOSE plates {10 cm) Solvent: No-citrate 21/20/o-Meth0nOI-c0nc. Ammonia 20 3 5 Figure 2a, b.
RISK-BEARING SUBSTANCES IN COSMETICS 179 (c) Red Violet Rf of the main spots. Precooted CELLULOSE plates I0 cm Solvent: n. ButanoI-Pyrldin-Water 6 4 3 eFluorescent under UV. Lit.ref.: II {d) (e) Lit. ref.: Chem. Weckblar 57', 408 - 410 (1961) CELLULOSE precooted plates I0 cm Solvent' HCI 10% aqueous 8- 3- 2- I- o © © I I I I Lit.ref.: 9 0 = orange R = red SILICA precooted plates I0 cm Solvent: Dichloromethone Figure 2c-e.
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