Zinc sulfate 7AQ
General Product Information
| Article | Zinc sulfate 7AQ |
| Synonyms | White vitriol, Zinc sulfphate, Zinc sulfate heptahydrate |
| CAS No. | 7446-20-0 |
| EEG No. | 030-006-00-9 |
| EINECS No. | 231-793-3 |
| IMO | Class 9 |
| Tariff Code | 28332920 |
| UN No. | 3077 |
| VLG/ADR | Class 9, Packing Group III |
Description
Zinc sulfate 7AQ, also called zinc sulfate heptahydrate, is an inorganic salt composed of zinc, sulfur, oxygen and seven molecules of crystal water.
It is a white to Colorless, odorless, crystalline powder that is highly soluble in water.
It is widely used in sectors such as Agriculture, Chemistry, Water Treatment and industrial processes.
The product is popular as a zinc source because of its high purity, good solubility and wide applicability.
Characteristics
- Odor: Odorless.
- Hygroscopic: Yes.
- Color: White to Colorless.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | ZnSO4 – 7H2O |
| Molar Weight | 287.54 g/mol |
| Melting Point | 100 °C (loss of crystal water) |
| Boiling Point | Approx. 280 °C (decomposes). |
| Density | Approx. 1.97 g/cm³. |
| Refractive Index | – |
| pH | 4.4-5.6 (at 5% solution) |
Interessing Links
- CAS Common Chemistry – Zinc sulfate heptahydrate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Zinc sulfate heptahydrate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Zinc sulfate
Applications
Zinc sulfate 7AQ is applied in various ways, for instance:
1. Chemical Industry
It is used as a raw material in pigments (such as lithopone), in the production of zinc salts, and as an electrolyte in galvanizing processes (e.g., galvanizing of steel).
2. Agriculture
Zinc sulfate 7AQ is an effective zinc source in fertilizer formulations for soil application. It prevents zinc deficiency at crops, which is crucial for enzyme activity and growth processes.
3. Water Treatment
Zinc sulfate is used in industrial cooling and water systems to control algae growth and bacterial growth.
4. Leather & Textile Industry.
Used as a mordant in dyeing processes and at the preservation of leather.
5. Cosmetics & Personal Care
In lotions, deodorants and skin care products, it is used for its astringent and antibacterial properties.