Echothiophate Iodide: White,crystalline,hygroscopic solid having a slight mercaptan-like odor.Its solutions have a pHof about 4.Freely soluble in water and in methanol;soluble in dehydrated alcohol;practically insoluble in other organic solvents.

Echothiophate Iodide for Ophthalmic Solution: White,amorphous powder.

Econazole Nitrate: White or practically white,crystalline powder,having not more than a slight odor.Very slightly soluble in water and in ether;slightly soluble in alcohol;sparingly soluble in chloroform;soluble in methanol.

Edetate Calcium Disodium: White,crystalline granules or white,crystalline powder.Is odorless,is slightly hygroscopic,and has a faint,saline taste.Is stable in air.Freely soluble in water.

Edetate Disodium: White,crystalline powder.Soluble in water.NFcategory:Chelating agent.

Edetic Acid: White,crystalline powder.Melts above 220,with decomposition.Very slightly soluble in water;soluble in solutions of alkali hydroxides.NFcategory:Chelating agent.

Edrophonium Chloride: White,odorless,crystalline powder.Its solution (1in 10)is practically colorless.Very soluble in water;freely soluble in alcohol;insoluble in chloroform and in ether.

Emedastine Fumarate: White to faintly yellow,crystalline powder.Soluble in water.

Emetine Hydrochloride: White or very slightly yellowish,odorless,crystalline powder.Is affected by light.Freely soluble in water and in alcohol.

Enalapril Maleate: Off-white,crystalline powder.Melts at about 144.Practically insoluble in nonpolar organic solvents;slightly soluble in semipolar organic solvents;sparingly soluble in water;soluble in alcohol;freely soluble in methanol and in dimethylformamide.

Enalaprilat: White to nearly white,hygroscopic,crystalline powder.Sparingly soluble in methanol and in dimethylformamide;slightly soluble in water and in isopropyl alcohol;very slightly soluble in acetone,in alcohol,and in hexane;practically insoluble in acetonitrile and in chloroform.

Enflurane: Clear,colorless,stable,volatile liquid,having a mild,sweet odor.Is nonflammable.Slightly soluble in water.Miscible with organic solvents,with fats,and with oils.

Ephedrine: Unctuous,practically colorless solid or white crystals or granules.Gradually decomposes on exposure to light.Melts between 33and 40,the variability in the melting point being the result of differences in the moisture content,anhydrous Ephedrine having a lower melting point than the hemihydrate of Ephedrine.Its solutions are alkaline to litmus.Soluble in water,in alcohol,in chloroform,and in ether;moderately and slowly soluble in mineral oil,the solution becoming turbid if the Ephedrine contains more than about 1%of water.

Ephedrine Hydrochloride: Fine,white,odorless crystals or powder.Is affected by light.Freely soluble in water;soluble in alcohol;insoluble in ether.

Ephedrine Sulfate: Fine,white,odorless crystals or powder.Darkens on exposure to light.Freely soluble in water;sparingly soluble in alcohol.

Ephedrine Sulfate Nasal Solution: Clear,colorless solution.Is neutral or slightly acid to litmus.

Epinephrine: White to practically white,odorless,microcrystalline powder or granules,gradually darkening on exposure to light and air.With acids,it forms salts that are readily soluble in water,and the base may be recovered by the addition of ammonia water or alkali carbonates.Its solutions are alkaline to litmus.Very slightly soluble in water and in alcohol;insoluble in ether,in chloroform,and in fixed and volatile oils.

Epinephrine Injection: Practically colorless,slightly acid liquid.Gradually turns dark on exposure to light and air.

Epinephrine Inhalation Solution: Practically colorless,slightly acid liquid.Gradually turns dark on exposure to light and air.

Epinephrine Nasal Solution: Nearly colorless,slightly acid liquid.Gradually turns dark on exposure to light and air.

Epinephrine Ophthalmic Solution: Colorless to faint yellow solution.Gradually turns dark on exposure to light and air.

Epinephrine Bitartrate: White,or grayish-white or light brownish-gray,odorless,crystalline powder.Slowly darkens on exposure to air and light.Its solutions are acid to litmus,having a pHof about 3.5.Freely soluble in water;slightly soluble in alcohol;practically insoluble in chloroform and in ether.

Epinephrine Bitartrate for Ophthalmic Solution: White to off-white solid.

Epinephryl Borate Ophthalmic Solution: Clear,pale yellow liquid,gradually darkening on exposure to light and air.

Ergocalciferol: White,odorless crystals.Is affected by air and by light.Insoluble in water;soluble in alcohol,in chloroform,in ether,and in fatty oils.

Ergocalciferol Oral Solution: Clear liquid having the characteristics of the solvent used in preparing the Solution.

Ergoloid Mesylates: White to off-white,microcrystalline or amorphous,practically odorless powder.Slightly soluble in water;soluble in methanol and in alcohol;sparingly soluble in acetone.

Ergonovine Maleate: White to grayish-white or faintly yellow,odorless,microcrystalline powder.Darkens with age and on exposure to light.Sparingly soluble in water;slightly soluble in alcohol;insoluble in ether and in chloroform.

Ergotamine Tartrate: Colorless crystals or white to yellowish-white,crystalline powder.Is odorless.Melts at about 180,with decomposition.One g dissolves in about 3200mLof water;in the presence of a slight excess of tartaric acid 1g dissolves in about 500mLof water.Slightly soluble in alcohol.

Erythromycin: White or slightly yellow,crystalline powder.Is odorless or practically odorless.Slightly soluble in water;soluble in alcohol,in chloroform,and in ether.

Erythromycin Estolate: White,crystalline powder.Is odorless or practically odorless,and is practically tasteless.Soluble in alcohol,in acetone,and in chloroform;practically insoluble in water.

Erythromycin Ethylsuccinate: White or slightly yellow crystalline powder.Is odorless or practically odorless,and is practically tasteless.Very slightly soluble in water;freely soluble in alcohol,in chloroform,and in polyethylene glycol 400.

Erythromycin Gluceptate: Colorless to white crystals.Slightly hygroscopic.Freely soluble in water,in alcohol,in methanol,in dioxane,and in propylene glycol;slightly soluble in acetone and in chloroform;practically insoluble in ether,in carbon tetrachloride,in benzene,and in toluene.

Erythromycin Lactobionate for Injection: White or slightly yellow crystals or powder,having a faint odor.Its solution (1in 20)is neutral or slightly alkaline.Freely soluble in water,in alcohol,and in methanol;slightly soluble in acetone and in chloroform;practically insoluble in ether.

Erythromycin Stearate: White or slightly yellow crystals or powder.Is odorless or may have a slight,earthy odor,and has a slightly bitter taste.Practically insoluble in water;soluble in alcohol,in chloroform,in methanol,and in ether.

Estradiol: White or creamy white,small crystals or crystalline powder.Is odorless,and is stable in air.Is hygroscopic.Practically insoluble in water;soluble in alcohol,in acetone,in dioxane,in chloroform,and in solutions of fixed alkali hydroxides;sparingly soluble in vegetable oils.

Estradiol Cypionate: White to practically white,crystalline powder.Is odorless or has a slight odor.Insoluble in water;soluble in alcohol,in acetone,in chloroform,and in dioxane;sparingly soluble in vegetable oils.

Estradiol Valerate: White,crystalline powder.Is usually odorless but may have a faint,fatty odor.Practically insoluble in water;soluble in castor oil,in methanol,in benzyl benzoate,and in dioxane;sparingly soluble in sesame oil and in peanut oil.

Estriol: White to practically white,odorless,crystalline powder.Melts at about 280.Insoluble in water;sparingly soluble in alcohol;soluble in acetone,in chloroform,in dioxane,in ether,and in vegetable oils.

Conjugated Estrogens: Conjugated Estrogens obtained from natural sources is a buff-colored,amorphous powder,odorless or having a slight,characteristic odor.The synthetic form is a white to light buff,crystalline or amorphous powder,odorless or having a slight odor.

Esterified Estrogens: White or buff-colored,amorphous powder,odorless or having a slight,characteristic odor.

Estrone: Small,white crystals or white to creamy white,crystalline powder.Is odorless,and is stable in air.Melts at about 260.Practically insoluble in water;soluble in alcohol,in acetone,in dioxane,and in vegetable oils;slightly soluble in solutions of fixed alkali hydroxides.

Estropipate: White to yellowish-white,fine,crystalline powder.Is odorless,or may have a slight odor.Melts at about 190to a light brown,viscous liquid,which solidifies on further heating and finally melts at about 245,with decomposition.Very slightly soluble in water,in alcohol,in chloroform,and in ether;soluble in warm water.

Ethacrynic Acid: White or practically white,odorless or practically odorless,crystalline powder.Very slightly soluble in water;freely soluble in alcohol,in chloroform,and in ether.

Ethambutol Hydrochloride: White,crystalline powder.Freely soluble in water;soluble in alcohol and in methanol;slightly soluble in ether and in chloroform.

Ethchlorvynol: Colorless to yellow,slightly viscous liquid,having a characteristic pungent odor.Darkens on exposure to light and air.Immiscible with water;miscible with most organic solvents.

Ether: Colorless,mobile,volatile liquid,having a characteristic sweet,pungent odor.Is slowly oxidized by the action of air and light,with the formation of peroxides.It boils at about 35.Soluble in water and in hydrochloric acid.Miscible with alcohol,with benzene,with chloroform,with solvent hexane,with methylene chloride,and with fixed and volatile oils.

Ethinyl Estradiol: White to creamy white,odorless,crystalline powder.Insoluble in water;soluble in alcohol,in chloroform,in ether,in vegetable oils,and in solutions of fixed alkali hydroxides.

Ethiodized Oil Injection: Straw-colored to amber-colored,oily liquid.It may possess an alliaceous odor.Insoluble in water;soluble in acetone,in chloroform,in ether,and in solvent hexane.

Ethionamide: Bright yellow powder,having a faint to moderate sulfide-like odor.Slightly soluble in water,in chloroform,and in ether;soluble in methanol;sparingly soluble in alcohol and in propylene glycol.

Ethopabate: White to pinkish-white,odorless or practically odorless powder.Very slightly soluble in water;soluble in acetonitrile,in acetone,in dehydrated alcohol,and in methanol;sparingly soluble in isopropyl alcohol,in dioxane,in ethyl acetate,and in methylene chloride;slightly soluble in ether.

Ethosuximide: White to off-white,crystalline powder or waxy solid,having a characteristic odor.Freely soluble in water and in chloroform;very soluble in alcohol and in ether;very slightly soluble in solvent hexane.

Ethotoin: White,crystalline powder.Insoluble in water;freely soluble in dehydrated alcohol and in chloroform;soluble in ether.

Ethyl Acetate: Transparent,colorless liquid,having a fragrant,refreshing,slightly acetous odor,and a peculiar,acetous,burning taste.Soluble in water.Miscible with alcohol,with ether,with fixed oils,and with volatile oils.NFcategory:Flavors and perfumes.

Ethyl Chloride: Colorless,mobile,very volatile liquid at low temperatures or under pressure,having a characteristic,ethereal odor.It boils between 12and 13,and its specific gravity at 0is about 0.921.When liberated at room temperature from its sealed container,it vaporizes immediately.It burns with a smoky,greenish flame,producing hydrogen chloride.Slightly soluble in water;freely soluble in alcohol and in ether.

Ethyl Oleate: Mobile,practically colorless liquid,having an agreeable taste.Insoluble in water.Miscible with vegetable oils,with mineral oil,with alcohol,and with most organic solvents.NFcategory:Vehicle.

Ethyl Vanillin: Fine,white or slightly yellowish crystals.Its taste and odor are similar to the taste and odor of vanillin.Is affected by light.Its solutions are acid to litmus.Sparingly soluble in water at 50;freely soluble in alcohol,in chloroform,in ether,and in solutions of alkali hydroxides.NFcategory:Flavors and perfumes.

Ethylcellulose: Free-flowing,white to light tan powder.It forms films that have a refractive index of about 1.47.Its aqueous suspensions are neutral to litmus.Insoluble in water,in glycerin,and in propylene glycol.Ethylcellulose containing less than 46.5%of ethoxy groups is freely soluble in tetrahydrofuran,in methyl acetate,in chloroform,and in mixtures of aromatic hydrocarbons with alcohol.Ethylcellulose containing not less than 46.5%of ethoxy groups is freely soluble in alcohol,in methanol,in toluene,in chloroform,and in ethyl acetate.NFcategory:Coating agent;tablet binder.

Ethylenediamine: Clear,colorless or only slightly yellow liquid,having an ammonia-like odor and a strong alkaline reaction.Miscible with water and with alcohol.

Ethylene Glycol Stearates: White or almost white,waxy solid.Soluble in acetone and in hot alcohol;practically insoluble in water.NFcategory:Emulsifying and/or solubilizing agent.

Ethylparaben: Small,colorless crystals or white powder.Slightly soluble in water and in glycerin;freely soluble in acetone,in alcohol,in ether,and in propylene glycol.NFcategory:Antimicrobial preservative.

Ethynodiol Diacetate: White,odorless,crystalline powder.Is stable in air.Insoluble in water;very soluble in chloroform;freely soluble in ether;soluble in alcohol;sparingly soluble in fixed oils.

Etoposide: Fine,white to off-white,crystalline powder.Very slightly soluble in water;slightly soluble in alcohol,in chloroform,in ethyl acetate,and in methylene chloride;sparingly soluble in methanol.

Eucatropine Hydrochloride: White,granular,odorless powder.Its solutions are neutral to litmus.Very soluble in water;freely soluble in alcohol and in chloroform;insoluble in ether.

Eugenol: Colorless or pale yellow liquid,having a strongly aromatic odor of clove and a pungent,spicy taste.Upon exposure to air,it darkens and thickens.Is optically inactive.Slightly soluble in water.Miscible with alcohol,with chloroform,with ether,and with fixed oils.