Tetrasodium etidronate
CAS: 3794-83-0
EINECS: 223-267-7

Turpinal® SL and Turpinal® 4NL are respectively the acid form and the tetra sodium salt form of etidronic acid. They are colourless to slightly yellow liquids with a neutral odour. Turpinal® -2NZ and Turpinal® -4NP are the disodium and the tetrasodium powder forms of etidronic acid.

Turpinal® products are ideal chelants or additives in the following applications:

• In the stabilisation of peroxide bonds, in alkaline media specifically
• As a chelant in hair cosmetics containing mercaptan groups, i.e. thioglycolic acid, thiolactic acid
• As a means of limiting hair damage caused by bleaching and colouring
• In the stabilization of bar soaps, where Turpinal® is used as antioxidant and prevents discolouration and rancidity, in particular under the influence of day light

The products can be mixed with water in all ratios and have a strong complexing capacity in relation to polyvalent cations. The excellent complexing capacity for metals is exploited for the stabilization of H2O2 -containing preparations and other preparations with active oxygen. The product is also suited for application in mercaptan-containing formulations and enhances the colour stability of bar soaps. It is recommended that Turpinal® be added during production with a concentration of 0.1-2% with reference to the finished preparation.