Why does CAS 3055-99-0 appear in more than one EU cosmetic annex?

A substance identified by CAS 3055-99-0 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

How do I check if my formula contains a substance with CAS 3055-99-0?

Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 3055-99-0 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 3055-99-0

Q: How do I use CAS 3055-99-0 for compliance screening?

Cross-reference CAS 3055-99-0 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 3055-99-0 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 3055-99-0

CAS 3055-99-0PubChem CID 656641

Nonaethylene Glycol Monododecyl Ether

Polidocanol is a hydroxypolyether that is nonaethylene glycol in which one of the terminal hydroxy functions is substituted by a lauryl (dodecyl) group. It has a role as a nonionic surfactant, a hepatotoxic agent and a sclerotherapy agent. It is functionally related to a nonaethylene glycol. — ChEBI

IUPAC name: 2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol

Molecular formula: C30H62O10
Molecular weight: 582.8 g/mol
Exact mass: 582.43429817 Da
XLogP3: 3.9
Topological polar surface area: 103.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 10
Covalent units: 1
Defined stereocentres: 0

Also known as

PolidocanolAscleraAethoxy-sklerolnonaethylene glycol monolauryl etherVARITHENAPEG-9 lauryl etherMacrogol 9 lauryl etherdodecyl nonaoxyethylene ether

16 more reported names

CHEBI:46859C12-E9Dodecylnonaoxyethylene glycol monoetherBrij30LauromacrogolsPolidocanolsLaurethsLaureth 1Laureth 72-(2-(2-(2-(2-(2-(2-(2-(2-dodecoxyethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethoxy)ethanolRefChem:8546NIKKOL BL-9EXPolyoxyethylenedodecyl EthersPolyoxyethylene Lauryl EthersMARLIPAL 24/90Ether, Polyoxyethylene Lauryl

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:46859
ChEMBL:CHEMBL1231723
EPA DTXSID:DTXSID5039721
PubMed:23112519
PubMed:22999048
PubMed:22875366
PubMed:22825857
PubMed:22733913
PubMed:22686430
PubMed:22627969
PubMed:22620717
PubMed:22577366
PubMed:22546640
PubMed:22540861
PubMed:22531012

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

Records for CAS 3055-99-0

1 total

Annex

III

Entry

257

LAURETH-9

Laureth-9

(a) Leave-on products (b) Rinse-off products

221-284-4

Max concentration

How CAS 3055-99-0 is used on this site

CAS 3055-99-0 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 3055-99-0 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 3055-99-0 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.

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