1. Basic Product Information
| Item | Details |
|---|---|
| Product Name | Industrial Grade Citric Acid Anhydrous / Monohydrate |
| Chemical Formula | Anhydrous: C₆H₈O₇；Monohydrate: C₆H₈O₇·H₂O |
| CAS No. | 77-92-9 (Anhydrous)；5949-29-1 (Monohydrate) |
| HS Code | 2918140000 |
| Executive Standard | GB/T 9855-2020 Industrial Citric Acid |
| Appearance | White crystalline powder or granular, pure sour taste |
| Solubility | Easily soluble in water, soluble in ethanol |
| Transport Property | Non-dangerous goods, general cargo |
2. Purity Specification
Two mainstream industrial types for export
- Citric Acid Monohydrate: Main content ≥99.5%
- Citric Acid Anhydrous: Main content ≥99.7%
- Key impurity control: Sulfate, heavy metal, oxalic acid, water insoluble matter strictly limited for industrial production
3. Standard COA Certificate of Analysis
Batch stamped COA provided for every shipment, support SGS/BV third-party test
| Test Item | Standard Limit GB/T 9855-2020 | Actual Test Result | Test Method |
|---|---|---|---|
| Citric Acid Content | ≥99.50% | 99.72% | Titration |
| Water (Monohydrate) | 7.5%~9.0% | 8.12% | Drying test |
| Water (Anhydrous) | ≤0.5% | 0.21% | Drying test |
| Sulfate (SO₄²⁻) | ≤0.03% | 0.01% | Turbidimetry |
| Oxalic Acid | ≤0.01% | 0.003% | Colorimetry |
| Heavy Metal (Pb) | ≤10 ppm | <2 ppm | AAS |
| Water Insoluble Substance | ≤0.01% | 0.002% | Filtration weighing |
| Appearance | White uniform crystal, no foreign impurities | Qualified | Visual inspection |
| Conclusion | Compliant with GB/T 9855-2020 industrial standard, qualified for industrial export |
4. Main Industrial Applications
4.1 Water Treatment Industry
Efficient chelating agent & pH regulator for industrial circulating water, boiler descaling, remove calcium/magnesium scale, inhibit pipeline corrosion.
4.2 Dyeing & Textile Industry
Dye auxiliary, pH buffer for printing and dyeing; metal ion chelator to improve color fastness of fabrics.
4.3 Metal Surface Treatment
Industrial metal cleaning agent, remove rust, oxide scale and welding stains on steel, aluminum, hardware parts.
4.4 Daily Chemical & Detergent
Raw material for industrial cleaners, descaling agents, soap, industrial laundry detergent, bath additives.
4.5 Construction & Concrete
Concrete retarder, adjust setting time, improve concrete workability.
4.6 Fine Chemical Synthesis
Raw material for citrate salts, industrial plasticizer, biological culture medium, electroplating additive.
5. Packaging & Loading
- Standard package: 25kg inner PE bag + outer woven bag/kraft paper bag
- Bulk jumbo bag: 1000kg for large factory orders
- Loading: 26MT per 20GP container
6. Storage & Transport
- Store in dry, cool, ventilated warehouse, seal package to prevent moisture caking
- Keep away from alkaline chemicals, avoid direct sunlight
- General cargo, no dangerous goods transport procedures
7. Supplier Advantages
- Complete export documents: Batch COA, MSDS, commercial invoice, packing list, certificate of origin
- Monohydrate & anhydrous two types optional, multiple mesh sizes available
- Accept third-party pre-shipment inspection
- Stable monthly supply, support long-term contract orders
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