CAS 1 record

CAS 7057-57-0

CAS 7057-57-0 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 7057-57-0

CAS 7057-57-0PubChem CID 81506

Meldola blue

IUPAC name: zinc;benzo[a]phenoxazin-9-ylidene(dimethyl)azanium;trichloride

Molecular formula: C18H15Cl3N2OZn
Molecular weight: 447.1 g/mol
Exact mass: 443.954138 Da
Topological polar surface area: 24.6 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 5
Covalent units: 5
Defined stereocentres: 0

Also known as

RefChem:156316230-338-6EINECS 230-338-69-(Dimethylamino)benzo[a]phenoxazin-7-ium zinc chloride (1/1/3)9-(Dimethylamino)benzo(a)phenazin-7-ium chloride, compound with zinc chloride

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External database identifiers

EPA DTXSID:DTXSID20990797
PubMed:18656440

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 7057-57-0

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How CAS 7057-57-0 is used on this site

CAS 7057-57-0 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 7057-57-0 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.