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VWR Tri-Sodium citrate dihydrate 99.0-101.0%, AnalaR NORMAPUR® ACS, Reag. Ph. Eur. analytical reagent
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | Na₃C₆H₅O₇·2H₂O |
VWR Tri-Sodium Citrate Dihydrate (Na₃C₆H₅O₇·2H₂O) is a high-purity buffering and complexing agent with an assay range of 99.0–101.0% (anhydrous basis). Supplied under the AnalaR NORMAPUR® label, this reagent meets the standards of both the ACS and the European Pharmacopoeia (Ph. Eur.), making it ideal for use in regulated laboratory environments, pharmaceutical testing, analytical chemistry, and biological buffer preparation.
This crystalline compound provides excellent solubility and pH stability and is known for its role as a chelating agent for multivalent metal ions, particularly in aqueous systems.
Product Specifications
| Property | Value |
|---|---|
| Product Name | Tri-Sodium Citrate Dihydrate |
| Grade | AnalaR NORMAPUR®, ACS, Reag. Ph. Eur. |
| Chemical Formula | Na₃C₆H₅O₇·2H₂O |
| Molecular Weight | 294.1 g/mol |
| CAS Number | 6132-04-3 |
| MDL Number | MFCD00150031 |
| Merck Index | 13,08675 |
| EINECS Number | 200-675-3 |
| REACH Registration | 01-2119457027-40 |
| Melting Point | 150 °C |
| Density (20 °C) | 1.76 g/cm³ |
| Storage Temperature | Ambient |
| Physical Form | White crystalline powder |
| Assay (anhydrous basis) | 99.0 – 101.0% |
| pH (5% solution at 25 °C) | 7.5 – 9.0 |
| Water Content | 11.0 – 13.0% |
Impurity Limits (Selected)
| Impurity | Max. Limit |
|---|---|
| Heavy Metals (as Pb) | 5 ppm |
| Chloride (Cl⁻) | 10 ppm |
| Sulphate (SO₄²⁻) | 40 ppm |
| Iron (Fe) | 5 ppm |
| Ammonia (NH₃) | 30 ppm |
| Oxalic Acid | 100 ppm |
| Calcium (Ca) | 50 ppm |
| Arsenic (As) | 1 ppm |
| Insolubility in Water | Max. 50 ppm |
Packaging Options
| Catalog Number | Pack Type | Pack Size |
|---|---|---|
| 27833.237 | Plastic bottle (solid) | 250 g |
| 27833.260 | Plastic bottle (solid) | 500 g |
| 27833.294 | Plastic bottle (solid) | 1 kg |
| 27833.363 | Plastic bottle (solid) | 5 kg |
| 27833.460 | Cardboard carton | 25 kg |
Applications
- Buffer preparation for biochemical and analytical procedures
- Chelating agent for calcium and magnesium ions
- pH stabilization in pharmaceutical and food-grade processes
- Used in complexometric titration and sample conditioning
- Applicable in molecular biology, electrophoresis, and solution formulation
- Cleaning formulations in detergents and water softening systems (non-food use)
VWR Tri-Sodium Citrate Dihydrate 99.0–101.0%, AnalaR NORMAPUR® provides the high consistency and regulatory compliance required for pharmaceutical, analytical, and research environments. Its excellent buffering capacity, chelation performance, and broad compatibility make it a go-to reagent for regulated and routine laboratory workflows.
- Pack Size: 250g 1kg 500g Cardboard carton, 25kg Plastic bottle, 5kg