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VWR Zinc sulphate heptahydrate ≥99.5%, AnalaR NORMAPUR® analytical reagent
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Formula: ZnSO₄·7H₂O
CAS Number: 7446-20-0
Specifications:
| Application | Organic Synthesis | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | ZnSO₄·7H₂O |
VWR Zinc Sulphate Heptahydrate is a high-purity analytical-grade salt conforming to AnalaR NORMAPUR® standards, making it ideal for trace metal analysis, titrations, reagent preparation, and classical wet chemistry applications. With a minimum assay of ≥99.5%, this compound guarantees exceptional performance and minimal contamination in high-sensitivity laboratory environments.
Key Features & Benefits
- Ultra-high purity (≥99.5%) with tightly controlled impurity profile
- Conforms to BDH 10299 specification for analytical reagent use
- Supplied in a stable, crystalline heptahydrate form
- Low levels of heavy metals (As, Cd, Pb, etc.) verified by stringent QC testing
- Packaged in high-quality plastic bottles for long shelf life and safety
- Fully compliant with GHS05, GHS07, and GHS09 hazard classifications
Specifications
| Parameter | Value / Limit |
|---|---|
| Assay | ≥ 99.5% |
| pH (5% solution at 25 °C) | 4.4 – 6.0 |
| Insolubility in water | ≤ 100 ppm |
| Chloride (Cl⁻) | ≤ 5 ppm |
| Nitrogen (Total N) | ≤ 5 ppm |
| Arsenic (As) | ≤ 0.5 ppm |
| Calcium (Ca) | ≤ 10 ppm |
| Cadmium (Cd) | ≤ 5 ppm |
| Copper (Cu) | ≤ 5 ppm |
| Iron (Fe) | ≤ 5 ppm |
| Potassium (K) | ≤ 10 ppm |
| Lithium (Li) | ≤ 10 ppm |
| Manganese (Mn) | ≤ 3 ppm |
| Sodium (Na) | ≤ 10 ppm |
| Lead (Pb) | ≤ 20 ppm |
| Strontium (Sr) | ≤ 5 ppm |
| Solution in water | Passes test |
| Compliance | BDH 10299, AnalaR NORMAPUR® |
Physical & Chemical Properties
- Appearance: White crystalline powder
- Density: 1.97 g/cm³ (20 °C)
- Melting Point: ~100 °C (decomposes)
- Solubility: Freely soluble in water
- Storage: Ambient temperature
- Hazard Symbols: GHS05 (Corrosive), GHS07 (Irritant), GHS09 (Environmental hazard)
- UN Number: 3077 (ADR Class 9, Packaging Group III)
Ordering Information
| Catalog Number | Pack Size | Packaging |
|---|---|---|
| 29253.236 | 250 g | Plastic bottle for solids |
| 29253.260 | 500 g | Plastic bottle for solids |
| 29253.293 | 1 kg | Plastic bottle for solids |
- Pack Size: 250g 1kg 500g
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