What does the restriction note for CALCIUM SULFIDE mean?

The restriction field for CALCIUM SULFIDE reads: III/23. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 20548-54-3?

CAS 20548-54-3 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.

How do I check if my formula contains CALCIUM SULFIDE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3235015/10/2010

CALCIUM SULFIDE

Calcium sulphide

CALCIUM SULFIDE is linked to 1 EU annex record on this page. Inventory note: III/23.

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Regulatory evidence by market

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Market	Evidence status	Records	Source language
European Union	Evidence linked Restricted entry found Open this evidence	1	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	Source mapped Official source mapped; ingredient rule not imported	0	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 20548-54-3

CAS 20548-54-3PubChem CID 10197613

Calcium Sulfide

Calcium sulfide is an organic molecular entity. — ChEBI

IUPAC name: calcium sulfide

Molecular formula: CaS
Molecular weight: 72.15 g/mol
Exact mass: 71.9346620 Da
Topological polar surface area: 1.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 2
Defined stereocentres: 0

Also known as

Calcium sulphide1MBW07J51QHEPAR SULPHURIS CALCAREUMHepar SulphurisHepar SulfHEPAR SULPHRefChem:54629CRUDE CALCIUM SULFIDE

16 more reported names

Hepar Sulph Calc Kit RefillHepar sulphuris calcareum 6CHepar Sulphuris Calcareum 30cHepar sulphuris calcareum 200CHepar sulphuris calcareum 7120Hepar sulfuris 30 Special OrderHepar Sulphuris Calcareum 200ckBestmade Natural Products Hepar SulphurisBestmade Natural Products Calcium Sulfide Hepar Sulph (Calc Sulf)243-873-5calcium monosulfideCalcium sulfide (CaS)Hepar sulfuris calcareumCalcium;sulfideCALCIUM SULFIDE [MI]CHEBI:81055

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:81055
EPA DTXSID:DTXSID30885140

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for CALCIUM SULFIDE

INCI name

CALCIUM SULFIDE

Description

Calcium sulphide

Record provenance

Inventory reference: 32350
Imported identity: CALCIUM SULFIDE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for CALCIUM SULFIDE

Annex III Restriction reference

Entry 23

(a) Alkali sulphides (b) Alkaline earth sulphides

Key data

CAS

20548-54-3

243-873-5

Restriction

III/23

Function

DEPILATORY: Breaking down the mechanical strength of hair fibers so that they can be removed by mild scraping/rubbing.

Official EU ingredient-name evidence

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

#4988 · CALCIUM SULFIDE

Ingredients with overlapping formulation functions

BACILLUS/LACTOBACILLUS/MONASCUS/RICE BRAN EXTRACT/SOYBEAN EXTRACT FERMENT FILTR…ANTIMICROBIAL, ANTIOXIDANT, DEPILATORY

BARIUM SULFIDEDEPILATORY

C4-6 OLEFIN/STYRENE COPOLYMERDEPILATORY, SKIN CONDITIONING

C5-6 OLEFIN/STYRENE COPOLYMERDEPILATORY, SKIN CONDITIONING

CALCIUM THIOGLYCOLATEDEPILATORY, KERATOLYTIC, REDUCING

CALCIUM THIOGLYCOLATE HYDROXIDEDEPILATORY

COLOPHONIUMBINDING, DEPILATORY, FILM FORMING, VISCOSITY CONTROLLING

COPERNICIA CERIFERA WAXDEPILATORY

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 CALCIUM SULFIDE appears in the CosIng inventory

The CosIng inventory lists CALCIUM SULFIDE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CALCIUM SULFIDE 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

CALCIUM SULFIDE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for CALCIUM SULFIDE reads: "III/23". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, CALCIUM SULFIDE carries the following function designation(s):

DEPILATORY

CAS 20548-54-3 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 CALCIUM SULFIDE

This page combines the CosIng inventory entry for CALCIUM SULFIDE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research CALCIUM SULFIDE 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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Tools & next steps

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