Zinc stearate - Materials / Alfa Chemistry

NAVIGATION

Zinc stearate

PRICE INQUIRY

Catalog Number

ACMA00017263

Product Name

Zinc stearate

Category

Polymers; PVC Stabilizers

Description

Zinc stearate is a white, hydrophobic powder with a slight, characteristic odor. Mp: 130°C. Density: 1.1 g cm-3. Insoluble in water, ethyl alcohol and diethyl ether. Soluble in acids. Non-toxic. In technical grades, the percentage of zinc may vary according to the intended use. Products with less than the theoretical amount of zinc are more acidic.;DryPowder; DryPowder, OtherSolid; DryPowder, PelletsLargeCrystals, WetSolid; Liquid; OtherSolid; PelletsLargeCrystals; PelletsLargeCrystals, OtherSolid; WetSolid;WHITE FINE SOFT POWDER.;Soft, white powder with a slight, characteristic odor.;Soft, white powder with a slight, characteristic odor.

IUPAC Name

zinc;octadecanoate

Molecular Weight

632.3g/mol

Molecular Formula

C36H70O4Zn;Zn(C18H35O2)2;C36H70O4Zn

Canonical SMILES

CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]

InChI

InChI=1S/2C18H36O2.Zn/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2

InChI Key

XOOUIPVCVHRTMJ-UHFFFAOYSA-L

Melting Point

266 °F (NIOSH, 2016);130 °C;130 °C;266°F;266°F

Flash Point

530 °F (NIOSH, 2016);530 °F Open Cup;277 °C o.c.;530°F (open cup);(oc) 530°F

Density

1.1 (NIOSH, 2016);1.095 g/cu cm;1.1 g/cm³;1.10;1.10

Solubility

Insoluble (NIOSH, 2016);Soluble in benzene; insoluble in water, alcohol and ether;Soluble in acids and common solvents when hot;Solubility in water: none;Insoluble

Application

Zinc stearate serves as an invaluable component across various industries due to its diverse properties and applications. This fine, white powder is primarily known for its role as the most effective mold release agent among metal soaps, thanks to its hydrophobic nature and non-stick properties. In the plastics and rubber industries, zinc stearate is prominently used as a lubricant and release agent, allowing for the smooth production of rubber, polyurethane, polyester systems, and even aiding in powder metallurgy. Its utility extends into the realm of cosmetics, where it enhances texture as a lubricant and thickener, while also serving as a coloring agent. Additionally, zinc stearate acts as an activator in the vulcanization of rubber, capitalizing on zinc's ability to facilitate the reaction between sulfur and polyolefins. In pharmaceutical applications, it is employed as a lubricant in the manufacturing of tablets and capsules, and as a thickening and opacifying agent in creams and powders, thereby demonstrating its versatility across multiple product formulations.

Color/Form

White powder free from gritiness;Fine, soft, bulky powder

Complexity

196

Covalently-Bonded Unit Count

EC Number

209-151-9;257-363-5

Exact Mass

630.456553g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0987

Log P

1.2

MeSH Entry Terms

aluminum monostearate;aluminum tristearate;ammonium stearate;calcium stearate;magnesium stearate;octadecanoic acid;sodium stearate;stearic acid;zinc stearate

Monoisotopic Mass

630.456553g/mol

Odor

Faint odor;Slight, characteristic odor

Other Experimental

Decomp by dilute acids;Hydrophobic

Rotatable Bond Count

RTECS Number

ZH5200000

UNII

H92E6QA4FV

UN Number