Citric Acid Anhydrous USP, FCC Grade

Chemical Formula: C₆H₈O₇
CAS No.: 77-92-9
Appearance: White crystalline powder
Origin: China

Anhydrous Citric Acid is a high-purity, moisture-free acidulant with rapid dissolution and precise formulation control, making it ideal for moisture-sensitive products. Compared to Citric Acid Monohydrate, it offers extremely low moisture content, superior stability, and excellent flowability. It is widely used in the food and beverage, pharmaceutical, industrial, and cleaning industries to ensure consistent product quality, extended shelf life, and improved processing efficiency.

◼ Good flowability ◼ Extremely low moisture content ◼ High stability

For anhydrous, fast-dissolving, and highly stable citric acid suitable for sensitive formulations, select Anhydrous Citric Acid for reliable, high-purity supply in both food-grade and industrial applications.

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Citrates

Citric Acid

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Citric Acid Anhydrous Technical& Data Sheet

Molecular Formula	C6H8O7
Molecular Weight	192.13
CAS Number	77-92-9
E-NR	E 330
EINECS	20-10-691
Product Specifications
Assay (%)	99.5 – 100.5
Water (%)	0.5 max
Identification	Passes USP/FCC tests
Residue on Ignition (%)	0.05 max
Oxalate/Oxalic Acid (%)	0.036 max
Sulfate (%)	0.015 max
Arsenic (ppm)	1 max
Heavy Metals (ppm)	5 max / FCC IV Ed.
Lead (ppm)	0.5 max
Readily Carbonizable
Substances	Passes USP and FCC tests
Tridodecylamine (ppm)	0.1 max
Color & Clarity	Passes USP Tests
Particle Size Distribution
Granular	Max. 1% on U.S. No. 16 sieve
Granular	Max. 10% through U.S. No. 50 sieve
Fine Granular	Max. 1% on U.S. No. 30 sieve
Fine Granular	Max. 5% through U.S. No. 100 sieve
Powder	Max. 5% on U.S. No. 60 sieve
Powder	Min. 25% through U.S. No. 200 sieve
Bulk Densities	Granular 56 (lbs/ft3)
Bulk Densities	Fine Granular 54

Packaging &Storage

Item	Specification / Guidance
Packaging	Standard: 25kg woven bag with inner PE liner. Container Loading (20‘FCL): • Approx. 20 – 22 MT without pallets. • Approx. 14 – 15 MT with pallets. Other Options: 1000kg jumbo bags or custom packaging upon request.
Shipping	Product is stable for ambient temperature shipping. Avoid prolonged exposure to extreme heat (>40°C).
Storage	Store in a cool, dry, and well-ventilated place. Keep container tightly closed. Store away from strong acids, alkalis, and odorous materials.
Shelf Life	24 months in unopened original packaging under recommended storage conditions.

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Alchemist Citric Acid is manufactured to meet the monograph specifications of major world codex and pharmacopoeia
standards including the USP, FCC, BP, EP, DAB and
FAO/WHO and is certified Kosher Pareve, Kosher for
Passover, and Halal.

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Citric Acid Anhydrous Applications

Food and Beverage Industry
◼ Standard Applications: Acidity regulation, antioxidant protection, chelation, fermentation aid.
◼ Distinct Advantages: For moisture-sensitive formulations or instant beverage powders, Anhydrous Citric Acid dissolves rapidly; its extremely low moisture content prevents caking and allows precise pH control, directly extending shelf life.
Why it’s suitable: Ensures stable flavor, prolongs shelf life, and supports precise formulation control.

Pharmaceuticals and Personal Care
◼ Standard Applications: Excipient, pH adjuster, medical device cleaning agent.
◼ Distinct Advantages: Moisture-free and highly stable, making it ideal for water-sensitive formulations such as effervescent tablets or powdered oral solutions.
Why it’s suitable: Maintains drug stability and ensures compatibility with sensitive formulations.

Industrial and Cleaning Applications
◼ Standard Applications: Water treatment, metal cleaning, descaling.
◼ Distinct Advantages: Rapid solubility accelerates reactions in industrial processes and allows precise pH adjustment, improving operational efficiency.
Why it’s suitable: Provides environmentally friendly cleaning solutions while optimizing process control.

Other Industrial Uses
◼ Textile Industry: Dyeing auxiliary.

Selection Guide – Anhydrous vs Monohydrate Citric Acid

◼ Preferred Anhydrous Citric Acid: Suitable for formulations requiring low moisture, fast dissolution, and precise pH control; ideal for instant powders, effervescent tablets, and moisture-sensitive products needing stability and extended shelf life.

◼ Preferred Citric Acid Monohydrate: Suitable for standard food, beverage, and industrial applications where moisture sensitivity is not critical; It provides reliable acidity adjustment and flavor enhancement for conventional formulations such as beverages and jams.

Certificates / Compliance

FAQ

How fast does Anhydrous Citric Acid dissolve?

Anhydrous Citric Acid dissolves very rapidly. Key reasons include: 1.Direct Solubility: With a solubility of approximately 1330 g/L at 20°C, it dissolves directly without the need to break down water crystals, giving it a faster initial dissolution rate compared to the monohydrate form, especially in cold water or instant applications. 2.Powder Form Advantage: It is often available as a fine powder, which increases surface area and allows for quicker wetting and dispersion in liquids.

What is the key stability advantage over Citric Acid Monohydrate?

The core advantage is its extremely low moisture content. This makes it significantly less hygroscopic (absorbs less moisture), which prevents caking in powder formulations and provides superior long-term stability in dry or moisture-sensitive products.