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Texture: Thick, hydrating gel | Ingredients: Niacinamide, ceramides | Other benefits: Oil free, fragrance free, paraben free, sulfate free. Niacinamide — the technical name for vitamin B3 — is ...
Propylparaben (also spelled propyl paraben) is the n-propyl ester of p-hydroxybenzoic acid. It occurs as a natural substance found in many plants and some insects. Additionally, it can be manufactured synthetically for use in cosmetics, pharmaceuticals, and foods. [ 1 ]
The Arrhenius equation was used in a study to calculate activation energies for the chlorination of four parent parabens (methyl-, ethyl-, propyl-, and butylparaben) and was found to range from 36–47 kJ/mol. [21] In another study, tap water at 20 °C (68 °F) containing 50–200 μM free chlorine was spiked with 0.5 μM propylparaben and the ...
Long-chained parabens, like butylparaben, are more estrogenic than short-chained parabens, like methyl- or ethylparaben. This difference is attributed to the greater lipophilicity of the former. [13] Butylparaben displayed the most competitive binding to rat estrogen receptors when tested along with methyl, ethyl, and propylparabens. [16]
Methylparaben (methyl paraben) one of the parabens, is a preservative with the chemical formula CH 3 (C 6 H 4 (OH)COO). It is the methyl ester of p-hydroxybenzoic acid.
Phenoxyethanol has germicidal and germistatic properties. [6] It is often used together with quaternary ammonium compounds.. Phenoxyethanol is used as a perfume fixative; an insect repellent; an antiseptic; [7] a solvent for cellulose acetate, dyes, inks, and resins; a preservative for pharmaceuticals, cosmetics and lubricants; [8] an anesthetic in fish aquaculture; [9] [10] and in organic ...
Ethylparaben (ethyl para-hydroxybenzoate) is the ethyl ester of p-hydroxybenzoic acid.Its formula is HO-C 6 H 4-CO-O-CH 2 CH 3.It is a member of the class of compounds known as parabens.
Isopropylparaben is a paraben. Synthesis. Isopropylparaben has been prepared via the stepwise addition of isopropanol, thionyl chloride, ...
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