|
Resorcinol Monoacetate
C8H8O3
152.15
1,3-Benzenediol,monoacetate. Resorcinol monoacetate [102-29-4].
Packaging and storage—
Preserve in tight,light-resistant containers.
Identification—
A:
Fuse 3drops with about 300mg of phthalic anhydride and about 50mg of zinc chloride:a small portion of the fused mixture when dissolved in 10mLof 1Nsodium hydroxide produces an intense yellow-green fluorescence typical of fluorescein.
B:
Dissolve 0.5mLin 3mLof alcohol,add 3drops of sulfuric acid,and boil:ethyl acetate,recognizable by its odor,is evolved.
Specific gravity á841ñ:
between 1.203and 1.207.
Acidity—
Asolution of 10mLof Resorcinol Monoacetate in 20mLof benzene,when shaken with 100mLof water,requires not more than 0.50mLof 0.10Nsodium hydroxide for neutralization,methyl orange TSbeing used as the indicator.
Loss on drying á731ñ—
Dry it on a steam bath for 1hour:it loses not more than 2.5%of its weight.
Residue on ignition á281ñ:
not more than 0.1%.
Organic volatile impurities,Method Iá467ñ:
meets the requirements.
Auxiliary Information—
Staff Liaison:Lawrence Evans,III,Ph.D.,Scientist
Expert Committee:(PA6)Pharmaceutical Analysis 6
USP28–NF23Page 1722
Phone Number:1-301-816-8389
|