Propylparaben

BP Propyl hydroxybenzoate JP Propyl parahydroxybenzoate PhEur Propylis parahydroxybenzoas USPNF Propylparaben 

Propylparaben is widely used as an antimicrobial preservative in cosmetics, food products, and pharmaceutical formulations see Table I. 

It may be used alone, in combination with other paraben esters, or with other antimicrobial agents. It is one of the most frequently used preservatives in cosmetics. 

The parabens are effective over a wide pH range and have a broad spectrum of antimicrobial activity, although they are most effective against yeasts and molds see Section 10. 

Owing to the poor solubility of the parabens, the paraben salts, particularly the sodium salt, are frequently used in formulations. This may cause the pH of poorly buffered formulations to become more alkaline. 

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Preservatives. Most products must contain preservatives to ensure that yeasts, molds, and bacteria do not thrive in them. These preservatives include alcohol, methylparaben, propylparaben, DMDM hydantoin, diazohdinyl urea, and imidazohdinyl urea. The parabens have limited solubiUty in water, eg, 0.25% for methylparaben and 0.05% for propylparaben (22). If these levels are exceeded in the formula, then the addition of solvents is needed to ensure clear, stable products. 

Technetium-99m mebrofenin is an iminodiacetic acid derivative used as a hepatobiliary agent. The kit is suppHed as a single vial containing lyopbilized mebrofenin. The reconstituted kit has 18-hour usage, owing to the preservative, propylparaben. 

Melt the stearyl alcohol and white petrolatum (steam bath) and warm to about 75°C. Heat the water to 75°C and add the sodium lauryl sulfate, propylene glycol, methylparaben, and propylparaben. Add the aqueous phase and stir until congealed. IV. Water-soluble ointment (polyethylene glycol ointment, USP 14) Polyethylene glycol 4000 (Carbowax 4000) 50%... 

Although this chapter is directed toward ophthalmic products, it is largely applicable to parenteral and even nonsterile products (solutions, emulsions, and suspensions). The choice of preservative is limited to only a few chemicals that have been found, over the years, to be safe and effective for this purpose. These are benzalkonium chloride, thimerosal, methyl- and propylparaben, phenylethanol, chlorhexidine,... 

Propyl gallate, antioxidant useful in cosmetics, 7 830t Propylparaben... 

N-propyl nitrate org chem C3H7NO3 A white to straw-colored liquid with a boiling range of I04-I27°C used as a monopropellant rocket fuel. en pro-pal nT.trat) propylparaben orgchem C,oH,203 Colorless crystals or white powder with a melting point of 9 j-98°C soluble in acetone, ether, and alcohol used in medicine and as a food preservative and fungicide.. pro pal par-a-ban ... 

H3PO4 / 40 % acetonitrile at a flow rate of 1 mL/min. was used, and UV detection at 210 nm was used. The method was used for the separation of benzoic acid, methylparaben, ethylparaben, propylparaben, saccharin, sorbic acids, and /7-hydroxybenzoic acid. 

Charge 40% of the propylene glycol to an appropriately sized stainless steel and add methylparaben and propylparaben with mixing, and mix until dissolved. 

Epivir oral solution is for oral administration. One milliliter (1 mL) of Epivir oral solution contains 10 mg lamivudine (10 mg/mL) in an aqueous solution and the inactive ingredients artificial strawberry and banana flavors, citric acid (anhydrous), methylparaben, propylene glycol, propylparaben, sodium citrate (dihydrate), and sucrose. 

Each 10-mL spray bottle contains 100 mg nicotine (10 mg/mL) in an inactive vehicle containing disodium phosphate, sodium dihydrogen phosphate, citric acid, methylparaben, propylparaben, edetate disodium, sodium chlo-... 

The powder for oral solution contains the following inactive ingredients methylparaben, propylparaben, sodium carboxymethylcellulose, sucrose, and antifoaming and flavoring agents. 

Each gram of Plexion (sodium sulfacetamide 10% and sulfur 5%) cleanser contains 100 mg sodium sulfacetamide and 50 mg sulfur in a cleanser base containing water, sodium methyl oleyltaurate, sodium cocoyl isethionate, disodium oleamido MEA sulfosuccinate, cetyl alcohol, glyceryl stearate and PEG-100 stearate, stearyl alcohol, PEG-55 propylene glycol oleate, magnesium aluminum silicate, methylparaben, disodium EDTA, butylated hydroxytoluene, sodium thiosulfate, fragrance, xanthan gum, and propylparaben. Each gram of Plexion (sodium... 

Separately add and dissolve the following ingredients in alcohol methylparaben, propylparaben, and anise oil. 

Add the methylparaben and propylparaben. Rinse the containers with some of the remaining water if necessary. Stir until dissolved, maintaining temperature at about 80°C. 

Ingredients for the 250 mg capsules are com oil, FD C yellow no. 6, gelatin, glycerin, iron oxide, methylparaben, propylparaben, and titanium dioxide. 

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