Ferrous sulfate (CAS 7720-78-7) Sourcing Guide: Spec Checks, QC Points & Supply Flow
When sourcing Ferrous sulfate (CAS 7720-78-7), confirming specifications and grade boundaries first usually saves more effort than comparing prices alone. This page takes a sourcing and QC view: what to verify during selection, and what to check on receipt and during storage; comparable grades are in the site search for 硫酸亚铁.
1. Basic specifications
| Name | Ferrous sulfate |
|---|---|
| CAS No. | 7720-78-7 |
| Formula | FeO4S |
| Molecular weight | 151.91 |
| Applications | Fine Chemicals |
| Standard purity | per batch COA |
| Packaging | confirmed per order |
| Storage | keep sealed in a cool, dry place |
Figures above are published / typical information; final values follow the batch COA and order confirmation.
2. Selection & QC notes
Ferrous sulfate (CAS 7720-78-7) is an inorganic fine-chemical raw material with several forms: Iron(II) sulfate heptahydrate (CAS 7782-63-0), Ferrous sulfate monohydrate (CAS 17375-41-6) and IRON(II) SULFATE DIHYDRATE (CAS 10028-21-4) differ in physical behaviour and intended use. Suggested check order:
- Define the form and grade first: anhydrous, monohydrate, heptahydrate or solution, then the applicable grade (industrial / feed).
- Verify assay and impurity limits: request the batch COA and check iron content, sulfate and heavy-metal items against your standard.
- Confirm packaging and transport: ferrous sulfate is moisture- and oxidation-sensitive; moisture-proof packaging matters.
- Keep test reports and retain samples of critical lots for incoming inspection and traceability.
Common pitfalls
- Comparing price only: grades differ significantly by application; the wrong grade creates downstream risk.
- Ignoring hydrate form: heptahydrate vs monohydrate differs in active content and dissolution, mixing them skews formulations.
- Poor storage and transport: moisture and oxidation can make a compliant batch fail on arrival.
3. FAQ
Which specifications should I confirm when sourcing ferrous sulfate?
Confirm the CAS number, grade (industrial / feed / food), iron content and impurity limits, packaging size, and the batch COA; final values follow the actual batch test results.
What forms of ferrous sulfate are common?
Common forms include heptahydrate, monohydrate and anhydrous ferrous sulfate; hydrated forms differ in storage behaviour and formulation performance, so choose by application.
What storage conditions does ferrous sulfate need?
Keep sealed in a cool, dry place, away from moisture and oxidation; packaging and storage requirements follow the batch COA and order confirmation.
4. Related products & comparison
- Ferrous ammonium sulfate (CAS 10045-89-3)
- IRON(II) SULFATE DIHYDRATE (CAS 10028-21-4)
- Ferrous sulfate hydrate (CAS 13463-43-9)
- FERROUS SULFITE (CAS 50820-24-1)
- Ferrous sulfate monohydrate (CAS 17375-41-6)
- Iron(II) sulfate heptahydrate (CAS 7782-63-0)
See the full site search for 硫酸亚铁 or browse the complete Inorganic Chemicals directory.
5. Supplier & compliance
Jinan Shenghe Chemical Co., Ltd. is based in Jinan, Shandong, and supplies chemical raw materials and fine chemicals with a COA for every shipment; quotations are returned within one business day.
Enquiries: info@591daili.com | +86-18553102138
Note: This page is for industrial raw-material technical discussion only. Products are supplied for industrial and research use, not for consumer or medical use. Drinking-water, food, cosmetic or pharmaceutical applications must meet applicable regulations and customer standards; specifications, compliance documents and transport requirements follow the batch COA and order confirmation.