Zinc stearate

Name: Zinc stearate
Brand: Vaqora Chemicals
SKU: VQ-008664

About Zinc stearate

Zinc stearate is a carboxylic acid in Synthesis grade carrying the CAS registry number 557-05-1, specified at 10–12% purity. With the molecular formula C36H70O4Zn, it has a molar mass of 632.3 g/mol. Its systematic (IUPAC) name is zinc bis(octadecanoate). Alternative names: Stearic acid zinc salt and Zn Stearate.

In its supplied form it is a white powder. Literature values give a melting point of 128-130 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for metallurgy and plating and rubber compounding. Buyers come mainly from pharmaceutical manufacturing, academic and industrial research and polymers and plastics.

We offer Zinc stearate in 500 g, 5 kg and 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Metallurgy & plating
Rubber compounding

Industries

Specifications & identifiers

Chemical identifiers
Product name	Zinc stearate
Catalogue No.	VQ-008664
CAS Number	557-05-1
IUPAC name	zinc bis(octadecanoate)
Molecular formula	C₃₆H₇₀O₄Zn
Molecular weight	632.3 g/mol
Exact mass	630.4566
Grade	Synthesis
Purity / assay	10–12%
HSN code	29157090
InChIKey	XOOUIPVCVHRTMJ-UHFFFAOYSA-L
SMILES	CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]
PubChem CID	11178

Physical properties
Physical form	Powder
Appearance	White powder
Melting point	128-130 °C
H-bond donors / acceptors	0 / 4
TPSA	80.3 Å²
Synonyms	Stearic acid zinc salt, Zn Stearate, Octadecanoic acid, zinc salt, Zink distearat, Unichem ZS, Stearic acid, zinc salt, Dermarone, Synpro stearate, Dibasic zinc stearate, Petrac ZN-41, Talculin Z, Stavinor ZN-E

Safety & hazard information (GHS)

Harmful / irritant

Environmental hazard

Signal word: Warning

Hazard statements

H335May cause respiratory irritation
H400Very toxic to aquatic life
H413May cause long lasting harmful effects to aquatic life

Precautionary statements: P261, P271, P273, P304 + P340, P319, P391, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 557-05-1

Zinc stearate, 10-12% Zn basis

CAS: 557-05-1
Formula: C₃₆H₇₀O₄Zn
MW: 632.3 g/mol

VQ-008665

Frequently asked questions

What is the CAS number of Zinc stearate?

The CAS Registry Number of Zinc stearate is 557-05-1. It is also known as Stearic acid zinc salt, Zn Stearate, Octadecanoic acid, zinc salt.

What is the molecular formula and molecular weight of Zinc stearate?

Zinc stearate has the molecular formula C36H70O4Zn and a molecular weight of 632.3 g/mol. Its IUPAC name is zinc bis(octadecanoate).

Which grade and pack sizes of Zinc stearate can I order?

We supply Zinc stearate in Synthesis (10–12%) grade, in 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Zinc stearate?

Yes. Every lot of Zinc stearate is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Zinc stearate be shipped internationally?

Yes. Zinc stearate is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.