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Nail Polish. Enessa Permyashkin Casey Cruz. History. 17th- and 18th-century European royal courts wrote about painting their nails R ecipe books from both Britain and the U.S. both had instructions for making nail paints. Ingredients. Key ingredient is nitrocellulose - PowerPoint PPT Presentation

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Nail Polish

Nail PolishEnessa Permyashkin Casey Cruz

History17th- and 18th-century European royal courts wrote about painting their nailsRecipe books from both Britain and the U.S. both had instructions for making nail paints

IngredientsKey ingredient is nitrocelluloseA highly combustible material that is also used in making dynamite, creates a film that holds together other substancesMain component used for car paint in the 1920sFireworks known as "gun cottonDissolved in ethyl acetate liquids.The polymers cement to the nail bed, keeping the polish on the nail. When the polish dries, the polymers harden and this is the reason why the polish does not slide off the nail.

Todays Nail PolishPlasticizers embed between polymer chains, making polish flexibleDibutyl phthalate and camphor are used to improve the flexibility of the film.Pigments and sparkling particles, such as mica, are also added. Stearalkonium hectorite is added to:Keep the glittery particles from sinking to the bottom of the bottle.Used as a thickening agentTo keep the other ingredients from separating and to make the polish easier to apply.

Changes in nail polishDibutyl phthalate: could interfere with the endocrine systemToluene: many companies have also eliminated the solvent in response to safety concerns

Pigments Theres a wide variety of chemicals used as pigments in nail polish. Common pigments include iron oxides and other colorants, such as you would find in paint or varnish.

Pigments are chemicals that add color to nail polish. An astonishing variety of chemicals may be used as pigments in nail polish. Common pigments include iron oxides and other colorants, such as you would find in paint or varnish.

7http://www.aquimicadascoisas.org/en/?episodio=the-chemistry-of-nail-polish