Molekula
Zinc sulfate heptahydrate, ACS Grade
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Zinc sulfate heptahydrate, ACS Grade, is a white crystalline inorganic salt composed of zinc, sulfur, oxygen, and water. It is primarily used as a dietary supplement, in electroplating, and as a laboratory reagent for analytical chemistry and microbiological culture media. It is also used in agriculture as a soil amendment, where it supplies zinc in fertilizer formulations. This high-purity grade meets the American Chemical Society’s specifications for consistent, reliable performance. CAS 7446-20-0, molecular formula ZnSO₄·7H₂O, molecular weight 287.56 g/mol. Store at ambient conditions. Signal word: Danger (corrosive, harmful if swallowed). Molekula supplies zinc sulfate heptahydrate, ACS Grade, from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £26.40 per pack ex VAT · £31.68 inc. VAT
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Assay | ≥ 99% (titration) |
| Water (KF) | ≥ 40% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 100 °C |
Source: PubChem CID 62640 (ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90025468 |
| CAS Number | 7446-20-0 |
| IUPAC Name | zinc;sulfate;heptahydrate |
| Molecular Formula | ZnSO4·7H2O |
| Molecular Weight | 287.56 |
| Exact Mass | 285.9548 |
| SMILES | O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[Zn+2] |
| InChIKey | RZLVQBNCHSJZPX-UHFFFAOYSA-L |
| InChI | InChI=1S/H2O4S.7H2O.Zn/c1-5(2,3)4;;;;;;;;/h(H2,1,2,3,4);7*1H2;/q;;;;;;;;+2/p-2 |
| PubChem CID | 62640 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 2833294500 |
| Tariff Code | 2833292000 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H318 Causes serious eye damage
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 0.1M Zinc sulphate
- H14O11SZn
- Ophthazinc T (TN)
- Sulfato de zinc
- Sulfuric acid, zinc salt (1:1), heptahydrate
- VasoClear A
- White vitriol (heptahydrate)
- ZnSO4.7H2O
Frequently asked questions
What is zinc sulfate heptahydrate (ACS Grade) commonly used for?
It is primarily used in chemical analysis, as a laboratory reagent, in water treatment for corrosion control, and in the production of other zinc compounds.
What is the molecular formula and molecular weight of zinc sulfate heptahydrate?
The molecular formula is ZnSO₄·7H₂O, and the molecular weight is 287.56 g/mol.
What safety precautions should be taken when handling zinc sulfate heptahydrate?
It carries a Danger signal word due to its hazardous nature—wear protective gloves, goggles, and ensure proper ventilation when handling.
What grade of zinc sulfate heptahydrate does Molekula supply, and is ACS Grade available?
Molekula supplies ACS Grade zinc sulfate heptahydrate, meeting strict purity standards for analytical and laboratory applications.
Can Molekula supply zinc sulfate heptahydrate in bulk quantities?
Yes, Molekula can accommodate bulk orders for zinc sulfate heptahydrate—please contact us for pricing and availability.
What documentation comes with an order of zinc sulfate heptahydrate?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.