Citric Acid

Pure food-grade citric acid - the naturally occurring weak organic acid responsible for the characteristic sour taste of citrus fruits. Commercial citric acid is produced industrially from fermentation of Aspergillus niger on sugar substrates (the process replicates the natural occurrence in citrus). The pure powdered form has many applications: preserving and pickling, bath bombs and bath fizzies, natural cleaning preparations, culinary use, and emulsifying preparations.

Key Facts

Chemical name

Citric acid (C₆H₈O₇)

Natural occurrence

Citrus fruits, berries, many other fruits

Commercial production

Fermentation of Aspergillus niger on sugar substrates

Food-grade

Yes; widely used as food ingredient

Common uses

Preserving, bath bombs, cleaning, culinary, emulsifying

Common Uses

Preserving and pickling: Acidifies foods for safe canning and pickling. Bath bombs: The classic acid for bath bomb fizziness (combined with sodium bicarbonate, the citric acid produces the characteristic fizz when wet). Natural cleaning: Mineral deposit removal, descaling kettles, cleaning hard-water stains. Culinary: Adding tartness to recipes (cheese making, candy making, sour candies). Emulsifying: Stabilizing oil-water emulsions in cosmetics and food.

How to Use Citric Acid

Bath bombs: 1 part citric acid to 2 parts sodium bicarbonate plus a small amount of cornstarch and essential oil; pack tightly into molds. Cleaning hard water deposits: dissolve 1-2 tablespoons in hot water; use to clean kettles, coffee makers, shower heads. Culinary: a small amount provides distinctive tartness; use sparingly (a little goes a long way). Preserving: small amounts in canning recipes adjust acidity for safe processing.

Safety Information

Food-grade citric acid is safe in standard food and topical applications. Avoid eye contact (irritant). Pure citric acid powder can irritate skin and mucous membranes; handle with care. Always rinse hands after handling concentrated amounts.

Frequently Asked Questions

What is Citric Acid used for?
Preserving, bath bombs, natural cleaning, culinary tartness, and emulsifying preparations.

Is it natural?
The compound is naturally present in citrus fruits; commercial citric acid is produced by fermentation (replicating the natural process).

What's the bath bomb ratio?
1 part citric acid to 2 parts sodium bicarbonate is the classic ratio.

Does it remove hard water deposits?
Yes; an effective natural descaling agent.

Is it gluten-free and vegan?
Yes; naturally gluten-free and vegan.

How does it compare to lemon juice?
Citric acid powder is much more concentrated; a small amount equals the acidity of a lot of lemon juice.