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VWR Potassium dichromate ≥99.8%, AnalaR NORMAPUR® Reag. Ph. Eur. analytical reagent
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Formula: K₂Cr₂O₇
CAS Number: 7778-50-9
Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | K₂Cr₂O₇ |
VWR Potassium Dichromate is a high-purity, orange crystalline compound with a minimum assay of 99.8%, manufactured to AnalaR NORMAPUR® and Reag. Ph. Eur. standards. It is used as a powerful oxidizing agent in analytical chemistry, environmental testing, and pharmaceutical quality control. The product is produced under stringent quality conditions to ensure minimal levels of impurities and excellent solubility characteristics.
Key Features and Benefits
- Assay ≥99.8% (dried basis) for high-purity analytical use
- Conforms to European Pharmacopoeia (Ph. Eur.) and AnalaR NORMAPUR® standards
- Low levels of impurities: chloride, sulphate, calcium, copper, iron, sodium, and lead
- Excellent stability and solubility; ideal for redox titration and oxidation reactions
- Supplied in durable plastic bottles for safe handling and storage
Applications
- Redox titrations (e.g., Mohr’s salt, Fe²⁺/Fe³⁺ analysis)
- Strong oxidizing agent in organic and inorganic synthesis
- Reference substance in analytical method validation
- Chromate-based standard in environmental and wastewater testing
- Reagent for photometric and spectroscopic analyses
Technical Specifications
| Property | Specification |
|---|---|
| Assay (on dried substance) | ≥ 99.8% |
| Insolubility in Water | ≤ 0.03% |
| Loss on Drying (130 °C) | ≤ 0.05% |
| Chloride (Cl⁻) | ≤ 0.02% |
| Sulphate (SO₄²⁻) | ≤ 200 ppm |
| Calcium (Ca) | ≤ 20 ppm |
| Copper (Cu) | ≤ 10 ppm |
| Iron (Fe) | ≤ 10 ppm |
| Sodium (Na) | ≤ 0.1% |
| Lead (Pb) | ≤ 50 ppm |
| Statement on Use | Confirmed |
| Conformity | Reag. Ph. Eur. – Passes test |
| Melting Point | 398 °C |
| Boiling Point | 500 °C (at 1013 hPa) |
| Density (20 °C) | 2.67 g/cm³ |
| Storage Conditions | Ambient |
| Merck Index | 12,07790 |
| EINECS Number | 231-906-6 |
| UN Number | 3087 |
| ADR Classification | 5.1 (oxidizing), 6.1 (toxic), PG II |
| GHS Classification | GHS03, GHS05, GHS06, GHS08, GHS09 |
| REACH Registration | 01-2119454792-32 |
Packaging Information
| Catalog Number | Pack Type | Quantity |
|---|---|---|
| 26784.297 | Plastic bottle for solids | 1 kg |
VWR Potassium Dichromate ≥99.8%, AnalaR NORMAPUR® Reag. Ph. Eur., is a premium-quality oxidizing agent ideal for laboratories performing high-accuracy redox titrations, trace metal analysis, and pharmaceutical testing. Its exceptional purity and regulatory compliance make it a dependable choice for controlled laboratory environments.