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Annex II Entry 1676 03/11/2021

Dichlorodioctylstannane

Dichlorodioctylstannane is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.

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Prohibited substance— Annex II, EU Regulation 1223/2009
Entry: 1676

Chemical identity and properties

PubChem 2D chemical structure for CAS 3542-36-7
CAS 3542-36-7PubChem CID 77080

Dioctyltin dichloride

Di-n-octyltin dichloride is an organotin compound. Tin is a chemical element with the symbol Sn and atomic number 50. It is a natural component of the earth's crust and is obtained chiefly from the mineral cassiterite, where it occurs as tin dioxide. (L307, L309) — Toxin and Toxin Target Database (T3DB)

IUPAC name
dichloro(dioctyl)stannane
Molecular formula
C16H34Cl2Sn
Molecular weight
416.1 g/mol
Exact mass
416.105959 Da
Topological polar surface area
0.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
0
Covalent units
1
Defined stereocentres
0

Also known as

DichlorodioctyltinDi-n-octyltin dichlorideStannane, dichlorodioctyl-DichlorodioctylstannaneDOTCDi-n-octyltindichlorideDioctylstannium dichlorideTZ52I3CR3Q
16 more reported names
DIOCTYLDICHLOROTINNSC-102574RefChem:586055222-583-2Di-n-OctyldichlorotinStannane, dioctyldichloro-Di-n-octyl-zinn dichloridTin, dioctyl-, dichlorideDi-n-Octyltin-dichlorideDi-?n-?octyldichlorotinCCRIS 2590Di-n-octyl-zinn dichlorid [German]EINECS 222-583-2UNII-TZ52I3CR3QNSC 102574AI3-28451
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Record details

Chemical name

Dichlorodioctylstannane

Chemical / IUPAC name

Dichlorodioctylstannane

Regulatory information

Regulation

(EU) 2021/1902

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Key data

CAS
3542-36-7
EC
222-583-2
Annex
II
Entry number
1676

Direct matches are limited for this record, so nearby entries from Annex II are shown as well.

What Annex II means for Dichlorodioctylstannane

Dichlorodioctylstannane is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.

Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.

The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Verify this substance is absent from all raw materials and finished formulations.
  • Request absence confirmation or CoA from raw material suppliers.
  • Document the screening result in the Product Information File (PIF).

Frequently asked questions

Yes. Dichlorodioctylstannane is listed in Annex II of EU Cosmetics Regulation 1223/2009 and is prohibited as an intentionally added cosmetic ingredient. Article 17 provides a narrow exception for unintended small quantities that are technically unavoidable under good manufacturing practice, provided the product remains safe under Article 3.

CAS 3542-36-7 is the unique numerical identifier assigned to Dichlorodioctylstannane by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex II record Dichlorodioctylstannane

This page summarizes one Annex II record for Dichlorodioctylstannane from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex II conditions for Dichlorodioctylstannane, but confirm any final regulatory decision against the current official annex wording and source files.

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