Why does CAS 2593-15-9 appear in more than one EU cosmetic annex?

A substance identified by CAS 2593-15-9 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.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 2593-15-9 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 2593-15-9

Q: How do I use CAS 2593-15-9 for compliance screening?

Cross-reference CAS 2593-15-9 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 2593-15-9 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 2593-15-9

CAS 2593-15-9PubChem CID 17432

Etridiazole

Etridiazole is a member of the class of thiadiazoles that is 1,2,4-thiadiazole which is substituted at positions 3 and 5 by trichloromethyl and ethoxy groups, respectively. A fungicide, it has been used particularly for the control of Phytophthora and Pythium species in soils. It has a role as a nitrification inhibitor and an antifungal agrochemical. It is an aromatic ether, an organochlorine compound, a member of thiadiazoles and a thiadiazole antifungal agent. — ChEBI

IUPAC name: 5-ethoxy-3-(trichloromethyl)-1,2,4-thiadiazole

Molecular formula: C5H5Cl3N2OS
Molecular weight: 247.5 g/mol
Exact mass: 245.918817 Da
XLogP3: 2.5
Topological polar surface area: 63.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 4
Covalent units: 1
Defined stereocentres: 0

Also known as

EchlomezoleEthazolEchlomezolKobanEtridiazolAaterraPansoilPlanvate

16 more reported names

TrubanTerracoatTERRAZOLEEtcmtbDwellETMTTerracoat L21Terrachlor-super XTerrafloOlin mathieson 2,424ETHAZOLEEthazole (fungicide)5-Ethoxy-3-trichloromethyl-1,2,4-thiadiazole1,2,4-Thiadiazole, 5-ethoxy-3-(trichloromethyl)-3-(Trichloromethyl)-5-ethoxy-1,2,4-thiadiazoleSanyard

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:81761
ChEMBL:CHEMBL3183350
EPA DTXSID:DTXSID3032547
PubMed:22675293
PubMed:22654749
PubMed:22629240
PubMed:22558040
PubMed:22347154
PubMed:22152222
PubMed:21499885
PubMed:21479943
PubMed:21034496
PubMed:20967430
PubMed:20663220
PubMed:19689800

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 2593-15-9

1 total

Annex

Entry

1054

5-Ethoxy-3-trichloromethyl-1,2,4-thiadiazole (Etridiazole - ISO)

219-991-8

CMR

How CAS 2593-15-9 is used on this site

CAS 2593-15-9 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 2593-15-9 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 2593-15-9 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.

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