Compound record

Octamethylcyclotetrasiloxane

Also known as OMCTS

556-67-2 · candidate list substance / siloxane · cosmetics

OMCTS SVHC Candidate ListEU monitoringcosmeticsformulation OCTAMETHYLCYCLOTETRASILOXANECyclotetrasiloxane, octamethyl-2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

Dossier Status Obligations Why Alternatives Changes Similar Sources

CAS 556-67-2

Formula C8H24O4Si4

Molecular weight 296.61 g/mol

InChIKey HMMGMWAXVFQUOA-UHFFFAOYSA-N

Why monitored

Why this substance is monitored in the EU

Octamethylcyclotetrasiloxane is currently surfaced as candidate list substance in the EU.

The current imported view anchors this substance in CandidateList. The live rationale focuses on PBT (Article 57d) vPvB (Article 57e), and this page is designed for fast status checks before deeper source review.

Reason

PBT (Article 57d) vPvB (Article 57e)

Open the cross-substance route for this rationale.

Rows behind the rationale

Imported framework context and legal signals

Framework	Status	Listed	Reason	Source
CandidateList	Candidate List substance	27 Jun 2018	PBT (Article 57d) vPvB (Article 57e)	Candidate List entry - Octamethylcyclotetrasiloxane