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CAS 20427-58-1

CAS 20427-58-1 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Chemical identity and properties

PubChem 2D chemical structure for CAS 20427-58-1
CAS 20427-58-1PubChem CID 9812759

Zinc Hydroxide

Zinc hydroxide is a hydroxide of zinc, with the chemical formula Zn(OH)2. It is used in surgical dressings. Zinc is a metallic element with the atomic number 30. It is found in nature most often as the mineral sphalerite. It also occurs naturally as 3 rare minerals: wн_lfingite (orthorhombic), ashoverite and sweetite (both tetragonal).Though excess zinc in harmful, in smaller amounts it is an essential element for life, as it is a cofactor for over 300 enzymes and is found in just as many transcription factors. (L48, L49, L68) Toxin and Toxin Target Database (T3DB)

IUPAC name
zinc dihydroxide
Molecular formula
H2O2Zn
Molecular weight
99.4 g/mol
Exact mass
97.934621 Da
Topological polar surface area
2.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
3
Defined stereocentres
0

Also known as

OXK3V8KJ7LRefChem:904951zinc(2+) ion dihydroxide243-814-3Zinc hydroxide (Zn(OH)2)ZINCHYDROXIDEO2ZnZinc hydroxide [VANDF]
External database identifiers

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 20427-58-1

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How CAS 20427-58-1 is used on this site

CAS 20427-58-1 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share 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 20427-58-1 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.