Citrate is ubiquitous in nature; it is a natural constituent and common metabolite of most organisms. Lemon juice for example contains 4 to 8% citric acid. Citrate is also used as a food additive. (Ref: Ingredient Information Sheet)
Citric acid is an active ingredient in household cleaners. A kitchen cleaning solution with a 6% concentration of citric acid for example will remove hard water stains from glass without scrubbing. (Ref: Wikipedia). Table 1 lists household cleaning applications and typical finished product concentration ranges of citric acid (anhydrous and mono-hydrate) and its tri-sodium salt.
Table 1: These figures are based on a survey among 8 detergent manufacturers for the European Union 15+3 (+3 being Iceland, Switzerland and Norway) in 2002. The total consumption in HERA applications is estimated to be at 103,000 tons in 2002 (as Citric Acid)
|Product Application ||Range of Citric Acid (anhydrous, monohydrate) and/or its salts in various products.
|Machine- / Hand dishwashing detergents
Citric acid is also used in industry, where it is used to dissolve rust from steel and in many special technical applications, as well as in pharmaceutical preparations (Ref: HERA & Wikipedia)