Resorcinol Monoacetate
(re sor' si nol mon'' oh as' e tate).
C8H8O3
152.15
152.151,3-Benzenediol, monoacetate.
Resorcinol monoacetate
[102-29-4].
Packaging and storage—
Preserve in tight, light-resistant containers.
Identification—
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.
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.
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%.
281:
not more than 0.1%.
Auxiliary Information—
Please check for your question in the FAQs before contacting USP.
| Topic/Question | Contact | Expert Committee |
|---|---|---|
| Monograph | Feiwen Mao, M.S.
Senior Scientific Liaison 1-301-816-8320 |
(SM32010) Monographs - Small Molecules 3 |
USP35–NF30 Page 4542