Product Overview
Citric Acid Anhydrous (C₆H₈O₇) is the water-free form of citric acid, specifically processed for applications requiring precise moisture control and extended shelf life.
Water-Free
≤0.5% moisture content
High Purity
99.5-100.0% assay purity
Fine Crystalline
White crystalline powder
Extended Stability
48 months shelf life
Technical Specifications
| Physical & Chemical Properties | |
|---|---|
| Chemical Formula | C₆H₈O₇ |
| Molecular Weight | 192.12 g/mol |
| Appearance | Fine white crystalline powder |
| Odor & Taste | Odorless with strongly acidic taste |
| Melting Point | 153°C |
| Bulk Density | 0.9 - 1.0 g/cm³ |
| pH (1% solution) | 2.1 - 2.4 |
| Solubility in Water | 59.2 g/100g at 20°C |
| Solubility in Ethanol | 58.2 g/100g at 20°C |
| Quality Specifications | |
|---|---|
| Assay (Titrimetric) | 99.5% - 100.0% |
| Water Content | ≤ 0.5% |
| Sulphated Ash | ≤ 0.1% |
| Heavy Metals (as Pb) | ≤ 10 ppm |
| Oxalic Acid | ≤ 100 ppm |
| Iron (Fe) | ≤ 50 ppm |
| Calcium (Ca) | ≤ 200 ppm |
| Chloride (Cl) | ≤ 50 ppm |
| Sulfate (SO₄) | ≤ 150 ppm |
| Arsenic (As) | ≤ 1 ppm |
| Readily Carbonizable Substances | Passes test |
Key Applications
Powdered Formulations
Ideal for instant drink mixes, dietary supplements, and powdered formulations where clumping must be prevented.
Confectionery
Used in sour candies, gummies, and coated confectionery where moisture absorption affects texture and shelf life.
Cosmetic Powders
In face powders, dry shampoos, and cosmetic powders where moisture control prevents caking and maintains flowability.
Industrial Applications
For adhesives, resin formulations, and industrial processes where moisture interferes with chemical reactions.
Cleaning Products
In powdered cleaning agents, dishwasher tablets, and detergent powders where moisture causes clumping.
Why Choose Anhydrous Citric Acid?
Moisture Control
Prevents clumping, caking, and degradation in moisture-sensitive formulations
Extended Shelf Life
48-month shelf life compared to 36 months for monohydrate
Consistent Potency
No water content variability ensures consistent acid strength
Storage Advantage
Requires less stringent humidity control during storage compared to monohydrate. Ideal for regions with high humidity.
Packaging Options
100 gm
Standup Pouch
200gm
Standup Pouch
500gm
Standup Pouch
1kg
Standup Pouch
25 kg
Standup Pouch
Order Information
Anhydrous vs Monohydrate
| Parameter | Anhydrous | Monohydrate |
|---|---|---|
| Water Content | ≤ 0.5% | 7.5-9.0% |
| Molecular Weight | 192.12 g/mol | 210.14 g/mol |
| Shelf Life | 48 months | 36 months |
| Storage Conditions | Below 30°C, dry | Below 25°C, moisture control |
| Best For | Dry formulations, tablets, powders | Wet formulations, beverages, liquids |
| Cost Effectiveness | Higher initial cost | More economical |
Selection Guide
Choose ANHYDROUS when:
- Moisture-sensitive application
- Extended shelf life required
- Dry powder formulations
- High humidity environment