Functional Acids

CAS Registry Number:


Chemical Formula:




General Information

In certain applications some of the standard product properties of citric acid are not adequate. Coating citric acid with suitable transparent shell materials or adding high-quality materials to citric acid lead to an exceptional range of modified citrics and a fine-tuning of the desired functionality for customer applications.

These modifications prevent undesired reactions with other ingredients as well as protection against moisture without losing its original function.

Citric acid DC is a direct compressible type of citric acid coated with a thin layer of maltodextrin.

CITROCOAT® N is comprised of citric acid as the core material, with a layer of a citrate as shell material.

CITROCOAT® EP is an agglomerated effervescent compound bringing CITROCOAT® N and sodium bicarbonate together in the exact right composition to create a highly reactive but storage stable effervescent compound.

Citric acid S40 is a very fine pulverised powder, blended with a slight amount of anti-caking agent silicon dioxide (SiO2), which displays a high ability to absorb spurs of humidity.


Citric acid DC, CITROCOAT® N, citric acid S40 are granular powders.

Citric acid DC, CITROCOAT® N, citric acid S40 are supplied in 25 kg net polyethylene lined paper bags. Other packaging is possible upon request.


Main functions

Citric acid DC

  • Speeding up tabletting process
  • Enhancing tablet hardness


  • Reducing stickiness during process
  • Reducing reactivity of citric acid with other ingredients (e.g. sodium bicarbonate)
  • Increasing shelf life of end products

Citric acid S40

  • Keeping citric acid free flowing
  • Optimising process properties


  • Acidifying agent
  • Buffering agent
  • Chelating agent
  • Tablet binder
  • Tablet disintegrant
  • Fire protection


  • Baby Food, Infant Formula
  • Cereals, Snacks
  • Confectionery
  • Desserts, Ice Cream
  • Flavours
  • Ready Meals, Instant Food
  • Fire protection

Personal Care

  • Colour Cosmetics
  • Hair Care
  • Oral Care
  • Skin Care
  • Soap and Bath Products
  • Fire protection

Cleaners & Detergents



Legal aspects

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