Ferrous sulfate is the classic inorganic iron(II) salt of sulfuric acid, most commonly supplied as the blue-green heptahydrate (CAS 7782-63-0, FeSO4·7H2O). As a simple water-soluble salt with the iron in the reduced +2 state, it differs from the family's amino-acid chelates such as ferrous bisglycinate and from the water-insoluble iron(III) forms. Elemental iron content depends on the hydrate, running near 20% for the heptahydrate and rising to roughly 33% for the dried/monohydrate and 37% for the anhydrous grade (anhydrous CAS 7720-78-7). It is manufactured to USP/EP specifications as a crystalline powder, and we supply it in tablet, capsule, liquid and powder formats.
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Applications
Single-mineral iron supplements, multivitamins and liquid drop products.
Documentation & quality
Every order is backed by the documents your quality team files, and the controls behind them.
Certificate of Analysis
every batchSpecification sheet
on requestAllergen statement
on requestGMO statement
on requestTraceability
on requestSafety Data Sheet
where applicableHow it’s controlled
- Identity verified on every incoming raw material
- Screened for heavy metals and microbial contaminants
- Full batch and lot traceability
- Produced under our certified GMP system
Other forms of Iron
Ferrous Bisglycinate
Iron(II) bis(glycinate)
- CAS
- 20150-34-9
- Formula
- C4H8FeN2O4
- Elemental
- ~20% Fe (Ferrochel grade; ~27% by anhydrous formula)
- Vegano
- Sin gluten
- Sin OMG
Ferrous Fumarate
Iron(II) fumarate
- CAS
- 141-01-5
- Formula
- C4H2FeO4
- Elemental
- ~33% Fe
- Vegano
- Sin gluten
- Sin OMG
Ferrous Gluconate
Iron(II) gluconate
- CAS
- 299-29-6
- Formula
- C12H22FeO14
- Elemental
- ~12% Fe (anhydrous; ~11.6% dihydrate)
- Vegano
- Sin gluten
- Sin OMG
Ferrous Lactate
Iron(II) lactate
- CAS
- 5905-52-2
- Formula
- C6H10FeO6
- Elemental
- ~24% Fe (anhydrous; ~19% trihydrate)
- Vegano
- Sin gluten
- Sin OMG
Ferric Pyrophosphate
Iron(III) pyrophosphate
- CAS
- 10058-44-3
- Formula
- Fe4(P2O7)3
- Elemental
- ~30% Fe
- Vegano
- Sin gluten
- Sin OMG
Carbonyl Iron
Iron (elemental, metallic)
- CAS
- 7439-89-6
- Formula
- Fe
- Elemental
- ~98% Fe (elemental)
- Vegano
- Sin gluten
- Sin OMG
Sodium Feredetate (NaFeEDTA)
Sodium iron(III) ethylenediaminetetraacetate
- CAS
- 15708-41-5
- Formula
- C10H12FeN2NaO8
- Elemental
- ~13% Fe (trihydrate; ~15% anhydrous)
- Vegano
- Sin gluten
- Sin OMG
Ferrous Ascorbate
Iron(II) bis(ascorbate)
- CAS
- 24808-52-4
- Formula
- C12H14FeO12
- Elemental
- ~14% Fe
- Vegano
- Sin gluten
- Sin OMG
Iron Polymaltose Complex
Iron(III)-hydroxide polymaltose complex
- CAS
- 53858-86-9
- Elemental
- varies (assay-standardized elemental Fe)
- Vegano
- Sin gluten
- Sin OMG
Heme Iron Polypeptide
Heme iron polypeptide (hemoglobin hydrolysate)
- Elemental
- ~1-2% Fe (heme; assay-standardized)
- Sin gluten