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CAS 7647-01-0 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 3432115/10/2010

HYDROCHLORIC ACID

Hydrogen chloride

HYDROCHLORIC ACID 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

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 7647-01-0

CAS 7647-01-0PubChem CID 313

Hydrochloric Acid

Hydrogen chloride, anhydrous appears as a colorless gas with a sharp, pungent odor. Fumes strongly in moist air. Nonflammable. Corrosive to metals and tissues and irritating to the eyes and respiratory system. Heavier than air. Long-term inhalation of low concentrations or short-term inhalation of high concentrations has adverse health effects. Prolonged exposure to fire or intense heat may result in the violent rupture and rocketing of the container. Used in the manufacture of rubber, pharmaceuticals, chemicals, and in gasoline refining and metals processing. Rate of onset: Immediate Persistence: Minutes to hours Odor threshold: 0.77 ppm Source/use/other hazard: Ore, other metal refining/cleaning; food/pickling; petroleum; corrosive liq. — CAMEO Chemicals

IUPAC name: chlorane

Molecular formula: ClH
Molecular weight: 36.46 g/mol
Exact mass: 35.9766777 Da
XLogP3: 0.8
Topological polar surface area: 0.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 0
Covalent units: 1
Defined stereocentres: 0

Also known as

hydrogen chlorideMuriatic acidChlorohydric acidAnhydrous hydrochloric acidAcide chlorhydriqueChlorwasserstoffMuriaticum acidumChloorwaterstof

16 more reported names

ChlorowodorHydrogen chloride (HCl)Acido cloridricoAqueous hydrogen chloridechlorure d'hydrogeneBaume hclIcon etchAcido clorhidricoEnplate po 236Anhydrous hydrogen chlorideChlorure d'hydrogene anhydreCloruro de hidrogeno anhidroHydrochloric acid, anhydrousNSC-77365cloruro de hidrogenoAcidum hydrochloricum

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:17883
ChEBI:CHEBI:23116
ChEBI:CHEBI:36683
ChEMBL:CHEMBL1231821
EPA DTXSID:DTXSID2020711
PubMed:32531310
PubMed:32006539
PubMed:31900028
PubMed:31898605
PubMed:29743441
PubMed:29618784
PubMed:27780710
PubMed:25478868
PubMed:24144632
PubMed:24122261
PubMed:23266427
PubMed:22906572

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 HYDROCHLORIC ACID

INCI name

HYDROCHLORIC ACID

INN name

hydrochloric acid

Ph. Eur. name

acidum hydrochloricum

Description

Hydrogen chloride

Record provenance

Inventory reference: 34321
Imported identity: HYDROCHLORIC ACID
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for HYDROCHLORIC ACID

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Key data

CAS

7647-01-0

231-595-7

Restriction

—

Function

BUFFERING: Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.

Official EU ingredient-name evidence

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

#12342 · HYDROCHLORIC ACID

Ingredients with overlapping formulation functions

GUANIDINE CARBONATEBUFFERING, SKIN CONDITIONING

GUANIDINE HCLBUFFERING

HUMAN DERMAL FIBROBLAST STEM CELL EXOSOMESBUFFERING; HAIR CONDITIONING; EYELASH CONDITIONING; SKIN CONDITIONING - MISCELLANEOUS

HYDROBROMIC ACIDBUFFERING

HYDROXYECTOINBUFFERING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

HYDROXYETHYLPIPERAZINE ETHANE SULFONIC ACIDBUFFERING

IMIDAZOLEBUFFERING

ISOBUTYRIC ACIDBUFFERING

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 HYDROCHLORIC ACID appears in the CosIng inventory

The CosIng inventory lists HYDROCHLORIC ACID 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.

HYDROCHLORIC ACID 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

HYDROCHLORIC ACID 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, HYDROCHLORIC ACID carries the following function designation(s):

BUFFERING

CAS 7647-01-0 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 HYDROCHLORIC ACID

This page reproduces the CosIng inventory entry for HYDROCHLORIC ACID 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 HYDROCHLORIC ACID 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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