Resorcinol monoacetate [102-29-4].
Packaging and storage Preserve in tight, light-resistant containers.
A: Fuse 3 drops with about 300 mg of phthalic anhydride and about 50 mg of zinc chloride: a small portion of the fused mixture when dissolved in 10 mL of 1 N sodium hydroxide produces an intense yellow-green fluorescence typical of fluorescein.
B: Dissolve 0.5 mL in 3 mL of alcohol, add 3 drops of sulfuric acid, and boil: ethyl acetate, recognizable by its odor, is evolved.
Specific gravity 841: between 1.203 and 1.207.
Acidity A solution of 10 mL of Resorcinol Monoacetate in 20 mL of benzene, when shaken with 100 mL of water, requires not more than 0.50 mL of 0.10 N sodium hydroxide for neutralization, methyl orange TS being used as the indicator.
Loss on drying 731 Dry it on a steam bath for 1 hour: it loses not more than 2.5% of its weight.
Residue on ignition 281: not more than 0.1%.
Auxiliary Information Please check for your question in the FAQs before contacting USP.Chromatographic Column
USP32NF27 Page 3496
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.