What is Citric Acid?

Citric Acid is a food-grade weak organic acid, the compound responsible for the characteristic sour taste of citrus fruits. It occurs naturally in citrus, berries, and many other fruits. Commercial citric acid is produced by fermentation of Aspergillus niger on sugar substrates, a process that yields the same molecule found in fruit.

Common uses

The pure powdered form is versatile. In the kitchen it adds tartness to cheese making, candy making, and sour candies. In canning and pickling it acidifies foods for safe processing. It is the classic acid in bath bombs, where it reacts with sodium bicarbonate to produce the signature fizz when wet. Around the house it descales kettles and coffee makers and lifts hard-water and mineral deposits.

Citric Acid: form & sizes

We supply Citric Acid as a fine crystalline powder, sold by weight in sizes from 1 oz to 1 lb. We make no health or therapeutic claims.

Storage

Store Citric Acid in an airtight container away from moisture and humidity, which can cause the powder to clump.

Handling note

Pure citric acid powder is acidic and can irritate the eyes, skin, and mucous membranes. Avoid eye contact and rinse your hands after handling concentrated amounts.

Citric Acid at a glance

Chemical formula

C₆H₈O₇

Natural occurrence

Citrus fruits, berries, and many other fruits

Commercial production

Fermentation of Aspergillus niger on sugar substrates

Grade

Food-grade

Form

Fine crystalline powder

Sizes

1 oz to 1 lb