Citric acid NEW

$0.00 25kg

$0.00 1kg

Min. Order1kg
Purity99%
Cas No77-92-9
Supply Ability100kg
Update time2026-04-14

Wuhan Fortuna Chemical Co., Ltd

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China

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Chemical Properties

Product Name	Citric acid
CAS No	77-92-9
EC-No	201-069-1
Min. Order	1kg
Purity	99%
Supply Ability	100kg
Release date	2026/04/14

Items	Specifications	Results
Appearance	Colorless, translucent crystals	Colorless, translucent crystals
Assay,%	99.5---100.5	99.8%
Identification	Pass the test	Pass the test
Readily Carbonizable Substances	Pass the test	Pass the test
Residue on Ignition,%	≤ 0.05	0.03
Oxalate,%	≤ 0.01	< 0.01
Lead (as Pb)	≤ 0.5ppm	< 0.5ppm
Arsenic	≤ 1ppm	< 1ppm
Water,%	≤ 0.5	0.3
Conclusion	The product conforms to the above specifications.

Citric Acid: Overview & Uses

Citric acid is a weak organic acid with the chemical formula C₆H₈O₇. It is a natural preservative and a key metabolic intermediate in the citric acid cycle (Krebs cycle) in all aerobic organisms.

Natural Source: Predominantly found in citrus fruits (lemons, limes, oranges), giving them their characteristic sour taste.
Commercial Production: Primarily produced via the industrial fermentation of carbohydrate solutions (often from molasses) by the mold Aspergillus niger.
Key Properties: It is a strong chelating agent (binds to metals), acts as a natural preservative (acidulant), and provides a pleasant, sharp sourness.

Primary Uses & Applications

Citric acid is one of the most versatile and widely used food additives and industrial chemicals.

1. Food & Beverage Industry (Primary Use: ~70% of production)

Acidulant & Flavor Enhancer: Provides tartness to soft drinks, candies, jams, jellies, and fruit-flavored products (E330 in the EU).
Preservative: Lowers pH to inhibit the growth of bacteria and molds in canned foods, sauces, and preserves.
Antioxidant Synergist: Enhances the effect of antioxidants in oils and fats.
Emulsifier: Helps keep fats dispersed in processed cheeses and ice creams.
Leavening Agent: In baking powders, it reacts with bicarbonates to produce carbon dioxide gas.

2. Pharmaceutical & Personal Care

Effervescent: Key ingredient in effervescent tablets and powders (e.g., for vitamins or pain relief).
Anticoagulant: Used as a chelating agent in blood collection tubes to prevent clotting by binding calcium.
Cosmetics & Toiletries: Acts as an acidifier, antioxidant, and preservative in creams, gels, and shampoos. Used in skincare for its mild exfoliating properties.

3. Household & Industrial Cleaners

Descaling Agent: Effectively removes limescale and rust from kettles, boilers, and coffee makers due to its chelating power. A key ingredient in eco-friendly cleaning products.
Detergent Booster: Used in phosphate-free detergents and dishwashing powders to soften water and improve surfactant efficiency.

4. Other Technical Applications

Water Softening: In soaps and detergents.
Photography & Textiles: As a pH adjuster in developing baths and dyeing processes.
Concrete Retarder: Slows the setting of cement.

Safety & Summary

Citric acid is "Generally Recognized As Safe" (GRAS). While safe in food, the pure powder or highly concentrated solutions can irritate eyes and skin. It is a cornerstone of modern industry due to its multifunctionality, effectiveness, biodegradability, and low cost.