Product Name: Zinc Sulphate Monohydrate 33%
Chemical Formula: ZnSOHO
Form: White free-flowing powder or crystalline granules
Color: White or off-white
Odour: Essentially odorless
| Parameter | Specification | Test Method |
|---|---|---|
| Zinc (Zn) Content | 33.0% (min) | ICP, AAS or Titration |
| Assay (ZnSOHO) | ~98% (typical) | Gravimetric/Assay |
| Water Soluble | Soluble | Visual/Filtration |
| Moisture (Loss on Drying) | 5% (approx) | Loss on Drying @105 C |
| pH (10% Solution) | ~4.0 6.0 | pH Meter |
| Impurity | Max. Allowed | Test |
|---|---|---|
| Water Insoluble Matter | 0.1% | Filtration |
| Arsenic (As) | 0.0005% | ICP/AAS |
| Cadmium (Cd) | 0.0005% | ICP/AAS |
| Lead (Pb) | 0.001% | ICP/AAS |
| Iron (Fe) | 0.05% | ICP/AAS |
| Chloride (Cl) | 0.1% | Titration |
Note: Some suppliers specify heavy metals in ppm format (e.g., Pb 10-20 ppm, As 510 ppm, Cd ~10 ppm) depending on grade and end-use requirements.
Molecular Weight: ~179.45 g/mol Imimg
Solubility: Highly soluble in water; slightly soluble in alcohol; insoluble in acetone jaishreerasayan.org
Density/Bulk: ~3.23.5 g/cm (varies by particle and supplier)
Typical Packaging:
25 kg, 50 kg HDPE/PP bags with inner liners
Jumbo bags / bulk per customer specification
Storage: Store in cool, dry, well-ventilated area; keep container closed; avoid moisture
Shelf Life: Usually ~24 months under recommended storage conditions
Assay / Zn Content: AAS/ICP or Complexometric Titration
Moisture: Loss on Drying
pH: pH Electrode on 10% aqueous solution
Impurities: ICP/AAS or wet chemical methods
Water Insolubles: Filtration & Gravimetric
Agriculture: Source of Zn in micronutrient fertilizers & feed supplements
Industrial: Electroplating, textile dyes, leather processing, lithopone precursor
Chemical intermediate: Manufacturing other zinc compounds

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