Potassium Dichromate 500g (chemical formula K₂Cr₂O₇; CAS No. 7778‑50‑9) is a high‐purity, extra‑pure reagent widely used in analytical chemistry, redox titrations, industrial applications, and research laboratories. This 500 g pack from an Indian manufacturer offers reliable performance, stringent quality control, and purity suitable for critical lab work.
Key Specifications of Potassium Dichromate 500g Extra Pure
| Property | Value |
|---|---|
| Assay / Purity (Iodometric) | ≥ 99.5% (Extra pure grade) |
| Appearance / Form | Orange crystalline solid or powder; bright red‑orange in colour |
| Molecular Weight | ~ 294.18 g/mol |
| Melting Point | ~ 398 °C |
| Boiling / Decomposition | ~ 500 °C (decomposes) |
| Density | ~ 2.68 g/cm³ at 20 °C |
| Solubility in Water (20 °C) | Approx. 115‑125 g/L water |
| Impurities (Maxima) | Chloride ≤ 0.005%, Sulfate ≤ 0.01%, Sodium / Calcium trace levels depending on supplier |
| Shelf Life / Storage Conditions | Typically stable at room temperature; store in tightly closed containers; shelf life ~ 5 years (supplier dependent) |
Applications & Uses
- Analytical Chemistry & Titrations: Standard oxidizing reagent in Iodometry and other redox protocols.
- Laboratory Research: For preparation of reference solutions, calibration, or chemical synthesis requiring strong oxidizers.
- Industrial Processes: Used in leather tanning, textile dyeing, metal finishing, and corrosion control.
- Educational Purposes: Demonstration of oxidation‑reduction, colorimetric assays in chemistry teaching labs.
Safety, Handling & Hazards
Because Potassium Dichromate is a hexavalent chromium compound, it poses serious health and environmental risks:
- Hazardous Properties: Carcinogenic; causes severe skin burns and eye damage; toxic by inhalation and ingestion; very toxic to aquatic life.
- Protective Measures: Use gloves, goggles, and protective clothing. Work in a fume hood. Avoid inhalation of dust.
- Disposal: Follow local hazardous waste regulations. Do not release into the environment. Neutralize properly before disposal.
- Storage: Keep in a cool, dry place; ensure container is tightly sealed. Avoid humidity and incompatible materials (e.g., organic matter, reducing agents).
Why Choose This Product
- High purity (≥ 99.5%) ensures consistent, accurate lab results.
- Indian supply—local availability may mean faster delivery and lower shipping cost.
- Crystalline form (powder or granules) allows easy weighing and preparation.
- Well‑defined specifications, suitable for regulatory or QA/QC lab use.
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