Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
InventoryRef 3213317/11/2016

BENZISOTHIAZOLINONE

1,2-Benzisothiazol-3(2H)-one

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

INCI CheckerCompare all markets Search similar

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.

Markets and their official sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 2634-33-5
CAS 2634-33-5PubChem CID 17520

1,2-Benzisothiazol-3(2H)-one

Benzo[d]isothiazol-3-one is an organic heterobicyclic compound based on a fused 1,2-thiazole and benzene bicyclic ring skeleton, with the S atom positioned adjacent to one of the positions of ring fusion. It has a role as a sensitiser, a xenobiotic, a disinfectant, a platelet aggregation inhibitor, an environmental contaminant and a drug allergen. It is an organic heterobicyclic compound and an organonitrogen heterocyclic compound. — ChEBI

IUPAC name
1,2-benzothiazol-3-one
Molecular formula
C7H5NOS
Molecular weight
151.19 g/mol
Exact mass
151.00918496 Da
XLogP3
1.3
Topological polar surface area
54.4 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

1,2-Benzisothiazolin-3-onebenzisothiazolonebenzisothiazolinonebenzoisothiazol-3-oneProxel PL1,2-Benzisothiazoline-3-one2,3-dihydro-1,2-benzothiazol-3-one3-Hydroxy-1,2-benzisothiazole
16 more reported names
Benzisothiazolin-3-one1,2-BENZISOTHIAZOL-3-ONE1,2-Benzoisothiazol-3-oneHRA0F1A4R3ORISTAR BITRefChem:411292220-120-9Benzo[d]isothiazol-3(2H)-oneProxelBenzo[d]isothiazol-3-olBenzo[d]isothiazol-3-oneC7H5NOS1,2-benzoisothiazolin-3-one1,2-benzisothiazolinoneActicide BITNipacide BIT
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 BENZISOTHIAZOLINONE

INCI name

BENZISOTHIAZOLINONE

Description

1,2-Benzisothiazol-3(2H)-one

Record provenance

Inventory reference
32133
Imported identity
BENZISOTHIAZOLINONE
Source update
17/11/2016
European Commission CosIng source notes
Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search

Search annex entries

Search the annex database for entries matching BENZISOTHIAZOLINONE or related substances.

Key data

CAS
2634-33-5
EC
220-120-9
Restriction
—
Function
ANTIMICROBIAL
Preventing and/or slowing down microbial growth.

Official EU ingredient-name evidence

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

#3209 · BENZISOTHIAZOLINONE

Ingredients with overlapping formulation functions

BENZALKONIUM CETYL PHOSPHATEANTIMICROBIAL, DEODORANT
BENZALKONIUM CHLORIDEANTIMICROBIAL, ANTISTATIC, DEODORANT, PRESERVATIVE, SURFACTANT - DISPERSING
BENZALKONIUM SACCHARINATEANTIMICROBIAL, ANTISTATIC, DEODORANT, PRESERVATIVE, SURFACTANT - DISPERSING
BENZETHONIUM CHLORIDEANTIMICROBIAL, DEODORANT, PRESERVATIVE, SURFACTANT - DISPERSING
BENZOTRIAZOLEANTIMICROBIAL
BENZOXIQUINEANTIMICROBIAL
BENZOXONIUM CHLORIDEANTIMICROBIAL
BENZYL BENZOATEANTIMICROBIAL, PERFUMING, SOLVENT

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 chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How BENZISOTHIAZOLINONE appears in the CosIng inventory

The CosIng inventory lists BENZISOTHIAZOLINONE 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.

BENZISOTHIAZOLINONE 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

BENZISOTHIAZOLINONE 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, BENZISOTHIAZOLINONE carries the following function designation(s):

CAS 2634-33-5 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.
View CAS records

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.
Open INCI Checker

Source note for BENZISOTHIAZOLINONE

This page reproduces the CosIng inventory entry for BENZISOTHIAZOLINONE 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 BENZISOTHIAZOLINONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sourcesView updates

Tools & next steps

Check your formula

Scan a full INCI list to detect BENZISOTHIAZOLINONE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to BENZISOTHIAZOLINONE, its identifiers or nearby name variants.

Search