Sodium dichromate AR Grade is an inorganic compound, an orange-red crystal, often used as a dihydrate. CAS 7778-50-9 EC 231-906-6| Chemical Reagents net

It is an inorganic compound extensively used as an oxidizing agent in industrial processes and analytical laboratories.

General Information

Sodium Dichromate

Compound Type: Inorganic compound
Common Uses: Widely used in industrial processes and as an oxidizing agent.
Brand: Keshi
Packaging: 500g × 20 bottles/case

Physical Properties

Molecular Formula: Cr2Na2O7·2H2O
Molecular Weight: 298 g/mol

Chemical Properties

CAS Number: 7789-12-0
MDL Number: MFCD07370792
EC Number: 234-190-3

Structural Formula

        O   O
         ║ ║
Cr ── O ── Cr
  ║         ║
Na        Na
  ║         ║
  O         O
  ║         ║
  H2O       H2O

Quality inspection report

| Product Name   | Sodium Dichromate Dihydrate          |
| Specification  | Analytical Grade                      |
| Batch Number   | 2023112901                            |
| Molecular Formula | Na2Cr2O7·2H2O                      |
| Molecular Weight | 298.00                               |
| Batch Quantity | 1480kg                                |
| Inspection Unit | Production Department                |
| Sample Category | Inorganic                             |
| Report Date    | 2023.12.01                            |
| Inspection Standard | HG/T 3439-2014                    |
| Test Item      | Standard Requirement                  | Actual Result         |
| Content,%      | ≥99.5                                 | 99.7                   |
| Appearance     | Red or orange-red crystals           | Orange-red crystals   |
| Insoluble in Water,% | ≤0.003                             | 0.001                  |
| Chloride (Cl),% | ≤0.005                               | ＜0.005                |
| Sulfate (SO4),% | ≤0.02                                | ＜0.02                 |
| Magnesium (Mg),% | ≤0.005                              | 0.0001                 |
| Aluminum (Al),% | ≤0.002                               | ＜0.002                |
| Potassium (K),% | ≤0.05                                | 0.02                   |
| Calcium (Ca),% | ≤0.005                                | ＜0.005                |
| Iron (Fe),%    | ≤0.0005                               | ＜0.0005               |
| Analysis Conclusion | Meets requirements of HG/T 3439-2014 Analytical Grade. |

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