C10H12O2 164.20

Phenol,2-methoxy-4-(2-propenyl)-.
4-Allyl-2-methoxyphenol [97-53-0].

Packaging and storage— Preserve in tight,light-resistant containers.

Solubility in 70percent alcohol— One volume dissolves in 2volumes of 70percent alcohol.

Specific gravity á841ñ: between 1.064and 1.070.

Distilling range,Method IIá721ñ— Not less than 95%distils between 250and 255.

Refractive index á831ñ: between 1.540and 1.542at 20.

Heavy metals,Method IIá231ñ: 0.004%.

Hydrocarbons— Dissolve 1mLin 20mLof 0.5Nsodium hydroxide in a stoppered,50-mLtube,add 18mLof water,and mix:a clear mixture results immediately,but it may become turbid when exposed to air.

Limit of phenol— Shake 1mLwith 20mLof water,filter,and add 1drop of ferric chloride TSto 5mLof the clear filtrate:the mixture exhibits a transient grayish green color but not a blue or violet color.

Expert Committee:(PA2)Pharmaceutical Analysis 2

USP28–NF23Page 805

Phone Number:1-301-816-8139