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CAS 7720-78-7 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 3393015/10/2010

FERROUS SULFATE

Iron sulphate

FERROUS SULFATE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Source mapped Inventory entry; no linked annex rule	0	English and EU languages
Great Britain	Source mapped Official source mapped; ingredient rule not imported	0	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Source mapped Official source mapped; ingredient rule not imported	0	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Source mapped Official source mapped; ingredient rule not imported	0	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Evidence linked Restricted Open this evidence	1	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Source mapped Official source mapped; ingredient rule not imported	0	Portuguese with INCI crosswalks
India	Source mapped Official source mapped; ingredient rule not imported	0	English and Hindi
Saudi Arabia	Source mapped Official source mapped; ingredient rule not imported	0	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 7720-78-7

CAS 7720-78-7PubChem CID 24393

Ferrous Sulfate

Iron(2+) sulfate (anhydrous) is a compound of iron and sulfate in which the ratio of iron(2+) to sulfate ions is 1:1. Various hydrates occur naturally - most commonly the heptahydrate, which loses water to form the tetrahydrate at 57C and the monohydrate at 65C. It has a role as a reducing agent. It is an iron molecular entity and a metal sulfate. It contains an iron(2+). — ChEBI

IUPAC name: iron(2+) sulfate

Molecular formula: FeO4S
Molecular weight: 151.91 g/mol
Exact mass: 151.886665 Da
Topological polar surface area: 88.6 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

Iron(II) sulfateFerrous sulphateFerrous sulfate anhydrousIron sulphateFerrosulfateIron sulfate (1:1)CombironDuretter

16 more reported names

DuroferonFerobuffFerralynFersolateFerolixFerulenFerusalIrospanKesukaOdophosSal chalybisFerro-TheronIron monosulfateSorbifer durulesFeSO4Slow Fe

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:75832
EPA DTXSID:DTXSID0029688
PubMed:25989284
PubMed:25700159
PubMed:25101005
PubMed:25053935
PubMed:24778671
PubMed:24310424
PubMed:23613366
PubMed:23049364
PubMed:22654638
PubMed:11005764
PubMed:2776093
PubMed:9924

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for FERROUS SULFATE

INCI name

FERROUS SULFATE

Description

Iron sulphate

Record provenance

Inventory reference: 33930
Imported identity: FERROUS SULFATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for FERROUS SULFATE

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Key data

CAS

7720-78-7

231-753-5

Restriction

—

Function

ASTRINGENT: Contracting and/or tightening the skin.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#10465 · FERROUS SULFATE

Ingredients with overlapping formulation functions

EUPHORBIA SUPINA STEM EXTRACTANTIMICROBIAL, ANTIOXIDANT, ASTRINGENT, HAIR CONDITIONING

EUPHRASIA OFFICINALIS EXTRACTANTIMICROBIAL, ASTRINGENT, SKIN CONDITIONING, SOOTHING, TONIC

FERRIC CHLORIDEASTRINGENT

FERRIC GLYCEROPHOSPHATEASTRINGENT

FEVILLEA TRILOBATA SEED OILASTRINGENT, SKIN PROTECTING

FICUS CARICA FRUIT JUICEASTRINGENT

FICUS DELTOIDEA LEAF EXTRACTANTIOXIDANT, ASTRINGENT

FRAGARIA VESCA FLOWER EXTRACTASTRINGENT, SKIN CONDITIONING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How FERROUS SULFATE appears in the CosIng inventory

The CosIng inventory lists FERROUS SULFATE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

FERROUS SULFATE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

FERROUS SULFATE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, FERROUS SULFATE carries the following function designation(s):

ASTRINGENT

CAS 7720-78-7 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for FERROUS SULFATE

This page reproduces the CosIng inventory entry for FERROUS SULFATE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research FERROUS SULFATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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