CAS 1 record

CAS 557-04-0

CAS 557-04-0 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 557-04-0

CAS 557-04-0PubChem CID 11177

Magnesium Stearate

Magnesium distearate is an organic magnesium salt and a magnesium salt. — ChEBI

IUPAC name: magnesium bis(octadecanoate)

Molecular formula: C36H70MgO4
Molecular weight: 591.2 g/mol
Exact mass: 590.5124524 Da
Topological polar surface area: 80.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 4
Covalent units: 3
Defined stereocentres: 0

Also known as

Magnesium distearateMagnesium octadecanoateDibasic magnesium stearateOctadecanoic acid, magnesium saltSynpro 90Stearic acid, magnesium saltPetrac MG 20NFMagnesium stearate g

16 more reported names

Synpro Magnesium Stearate 90Magnesii stearasNP 1500SM 1000Octadecanoic acid, magnesium salt (2:1)CHEBI:9254DAYCLINGRefChem:5973209-150-3magnesium(ii) stearateC36H70MgO4magnesium;octadecanoatemagnesium dioctadecanoateNS-M (salt)SM-PMagnesium stearate [JAN]

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External database identifiers

ChEBI:CHEBI:9254
ChEMBL:CHEMBL2106633
EPA DTXSID:DTXSID2027208

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 557-04-0

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How CAS 557-04-0 is used on this site

CAS 557-04-0 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 557-04-0 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.