Citric Acid Anhydrous (C₆H₈O₇) is the water-free form of citric acid, a naturally occurring organic acid found in citrus fruits. Unlike citric acid monohydrate (which contains one water molecule), the anhydrous form offers higher concentration per gram, better stability in dry formulations, and is preferred for applications where moisture sensitivity is critical. Moon Bright Resources supplies premium-grade citric acid anhydrous with 99.5-100.5% purity, manufactured through fermentation of carbohydrate sources under strict quality controls. Our product meets multiple international standards (BP, USP, FCC, E330) and is trusted by beverage manufacturers, pharmaceutical companies, water treatment plants, and industrial formulators worldwide. Food grade citric acid price per kg , Buy citric acid anhydrous online
Characteristics & Specifications
| Parameter | Specification |
|---|---|
| Purity (as C₆H₈O₇) | 99.5% – 100.5% |
| Appearance | White, crystalline powder |
| CAS Number | 77-92-9 |
| Molecular Formula | C₆H₈O₇ |
| Molecular Weight | 192.12 g/mol |
| Water Content (Anhydrous) | ≤ 0.5% |
| Sulphated Ash | ≤ 0.05% |
| Heavy Metals (as Pb) | ≤ 5 ppm |
| Arsenic (As) | ≤ 1 ppm |
| Lead (Pb) | ≤ 0.5 ppm |
| Mercury (Hg) | ≤ 1 ppm |
| Oxalates | ≤ 100 ppm |
| Chlorides | ≤ 50 ppm |
| pH (5% solution) | 2.2 – 2.5 |
| Mesh Size | 16-40 mesh (standard) / 8-20 mesh (coarse) / 40-80 mesh (fine) |
| Standards Met | BP, USP, FCC, E330, ISO 9001 |
Citric Acid Anhydrous vs. Monohydrate
| Feature | Anhydrous | Monohydrate |
|---|---|---|
| Water content | ≤ 0.5% | ~8.5% |
| Concentration per gram | Higher | Lower |
| Caking tendency | Lower | Higher |
| Best for | Dry blends, effervescent tablets, moisture-sensitive formulations | General food & beverage, cost-sensitive applications |
| Cost | Slightly higher | Lower |
Applications
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Food & Beverage: Soft drinks, juices, jams, jellies, canned fruits, dairy products, wine, beer
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Pharmaceuticals: Effervescent tablets, antacids, syrups, vitamin formulations, anticoagulants in blood collection tubes
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Water Treatment: Scale inhibitor, pH adjuster, chelating agent in cooling towers and boilers
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Industrial Cleaning: Descaling agent for coffee machines, dishwashers, industrial equipment
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Cosmetics & Personal Care: pH adjuster in shampoos, soaps, creams, lotions
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Agriculture: Fertilizer stabilizer, animal feed preservative
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Oil & Gas: Iron control agent in drilling fluids
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Textile: pH adjustment in dyeing and finishing processes
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1 kg laboratory sample bag
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5 kg multi-layer paper bag with PE liner
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10 kg poly bag
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25 kg kraft paper bag with PE liner
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25 kg PP woven bag
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500 kg FIBC (jumbo bag)
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1000 kg FIBC with inner liner
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Custom OEM packaging available
FAQ – Frequently Asked Questions
Q1: What is the difference between citric acid anhydrous and monohydrate?
A1: The difference is water content. Anhydrous citric acid contains no water of crystallization (≤0.5% moisture), making it more concentrated and stable in dry formulations. Monohydrate contains approximately 8.5% bound water and is slightly less concentrated. For effervescent tablets, dry powder blends, and moisture-sensitive products, anhydrous is preferred. For standard beverage and food applications, either works, but monohydrate is often more economical. Choose anhydrous when formulation requires maximum acidity per gram or minimal water introduction. Citric acid powder price per kg
Q2: Is citric acid anhydrous safe for food and pharmaceutical use?
A2: Yes, citric acid is Generally Recognized as Safe (GRAS) by the FDA and approved as food additive E330 worldwide. Our anhydrous citric acid meets USP, BP, and FCC standards, ensuring it is suitable for pharmaceutical, food, and beverage applications. It is naturally derived through fermentation and contains no harmful impurities when certified to these standards. Always verify grade certification for your specific application — we provide Certificate of Analysis (COA) with every shipment. Citric acid anhydrous wholesale , Citric acid fine powder supplier
Q3: Do you offer OEM / private label packaging?
A3: Yes, Moon Bright Resources provides full OEM services for citric acid anhydrous. We can package under your brand name with custom-printed bags (1 kg to 25 kg, or FIBCs), custom mesh size specifications (coarse, standard, or fine), and your choice of food grade, pharmaceutical grade, or industrial grade. Minimum OEM order quantity is 10 metric tons. We also offer custom repackaging for distributors, private label with multilingual labeling, and shrink-wrapped pallets for retail-ready displays. Industrial citric acid anhydrous price
Q4: What is your minimum order quantity (MOQ)?
A4: MOQ is 1 kg for sample orders, 25 kg (one bag) for small commercial orders, and 10 metric tons for wholesale pricing. Bulk orders of 20 metric tons or more (full container) qualify for discounted rates. For OEM private label orders, MOQ is 10 metric tons. Pharmaceutical grade (USP/BP) minimum is 5 metric tons. Full container load is typically 20-25 metric tons depending on packaging.
Q5: How should citric acid anhydrous be stored?
A5: Store in original tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight and moisture. Keep away from strong oxidizing agents, alkalis, and metals (corrosive to mild steel). Ideal storage temperature is 15-30°C with relative humidity below 60%. Under proper conditions, shelf life is 24-36 months. Citric acid is hygroscopic — exposure to humidity may cause caking. Partially used bags should be resealed immediately. Store away from incompatible materials including nitrates, chlorates, and permanganates. Citric acid anhydrous chemical supplier
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