Potassium Tartrate

What Is It?

Tartaric Acid is a white crystalline organic acid. It occurs naturally in many plants, particularly grapes and tamarinds. Salts of Tartaric Acid are called Tartrates. These salts include Calcium Tartrate, Potassium Tartrate, Potassium Sodium Tartrate and Disodium Tartrate. In cosmetics and personal care products, these ingredients are used in soaps, skin care products, suntan products and hair care products.

Why Is It Used?

Tartaric Acid and its salts are used as pH adjusters in cosmetics and personal care products. pH Adjusters are used to control the pH of finished cosmetic products.

Scientific Facts

Tartaric Acid is an organic carboxylic acid salt. Tartaric acid occurs in many fruits. It is widely used in bakery products, gelatin desserts and in soft drinks.

Safety Information

The Food and Drug Administration (FDA) has reviewed the safety of Potassium Sodium Tartrate and has affirmed its status as Generally Recognized as Safe (GRAS) as a direct food substance. FDA has approved the use of Tartaric Acid and Potassium Sodium Tartrate in Over-the-Counter (OTC) antacid drug products. Cosmetic Ingredient Review (CIR) has deferred evaluation of these ingredients because the safety has been assessed by FDA. This deferral of review is according to the provisions of the CIR Procedures.

Tartaric acid is metabolically inert in the human body. Link to FDA Code of Federal Regulations for Tartaric Acid

Link to FDA Code of Federal Regulations for Potassium Sodium Tartrate

Tartaric Acid and its salts may be used in cosmetics and personal care products marketed in the Europe according to the general provisions of the Cosmetics Regulation of the European Union.

Link to the EU Cosmetic Regulation: 

More Scientific Information

2,3-Dihydroxybutanedioic Acid is another name for Tartaric Acid. Other technical names for Potassium Sodium Tartrate include 2,3-Dihydroxybutanedioic Acid, Monopotassium Monosodium Salt and Rochelle Salt.


Find out more about the regulation of Food Additives by the Food and Drug Administration

Food Ingredients and Packaging: http://www.fda.gov/Food/IngredientsPackagingLabeling/default.htm

Food Contact Substances: http://www.fda.gov/Food/IngredientsPackagingLabeling/PackagingFCS/defaul…

Substances Generally Recognized As Safe (GRAS): http://www.fda.gov/Food/IngredientsPackagingLabeling/GRAS/default.htm

Find out more about the regulation of over-the-counter drugs by the Food and Drug Administration

OTC Drug Home Page: http://www.fda.gov/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSa…

Information about OTC Drug monographs: https://www.fda.gov/drugs/over-counter-otc-drug-monograph-process

Search the Code of Federal Regulations http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm

EU Cosmetics Inventory http://ec.europa.eu/consumers/cosmetics/cosing/