Folic Acid

Folic Acid is the synthetic, fully oxidised form of vitamin B9, built from three structural components — a pteridine ring, para-aminobenzoic acid, and glutamic acid — joined together into a single molecule that the body reduces and interconverts into the various active folate coenzyme forms used in DNA synthesis, cell division and amino-acid metabolism. Its best-known public-health role is the prevention of neural-tube birth defects when taken by women before and during early pregnancy, a finding so well established that folic acid fortification of staple foods (commonly wheat flour) is now mandated by law in a large and growing number of countries worldwide.

At room temperature it is a yellow to yellow-orange crystalline powder, essentially odourless, and practically insoluble in cold water, though it dissolves readily in dilute alkaline solution, the form in which it is often incorporated into liquid formulations. It is sensitive to light and will slowly degrade on prolonged exposure, a property that governs its packaging and storage more than any acute hazard does.

Where it fits in the value chain

Folic Acid's single largest volume use is mandatory flour and cereal fortification programmes, now required by national regulation across a large share of the world's wheat-consuming population specifically to reduce the incidence of neural-tube birth defects at a population level. A comparably important use is in prenatal and general multivitamin supplement formulation, where it is specifically recommended for women of childbearing age. Smaller but still significant volumes go into general food and beverage fortification beyond flour, and into animal feed premixes.

Grades we supply

Chelora Chemicals offers Folic Acid meeting USP/EP pharmacopoeial and FCC (food-chemical codex) specifications, suited to flour/cereal fortification, supplement formulation and animal-feed-premix use. Each grade is supplied with a batch-wise certificate of analysis covering assay, moisture and heavy metals.

Folic Acid is produced synthetically by assembling its three structural components in sequence: a pteridine precursor (commonly built up from a triaminopyrimidine and a suitable dicarbonyl compound) is condensed with para-aminobenzoic acid to form pteroic acid, which is then coupled with glutamic acid, typically via an activated ester or mixed-anhydride intermediate, to form the complete pteroylglutamic acid (folic acid) molecule. Each coupling step requires careful control to achieve good yield and to avoid forming related but biologically distinct folate impurities that must be removed in purification.

The crude product is purified by recrystallisation and, depending on the manufacturing partner's process, by further chromatographic or selective-precipitation purification to reach the assay and related-substance specification required of pharmacopoeial and food-grade material. Because the finished vitamin is light-sensitive, later purification, drying and packaging steps are run under light-controlled conditions to limit degradation before the product even reaches storage.