Alkali Stearate

Typical Product Characteristics
for Natrium Stearate

Sulphated ash: 22.0 – 24.0 %
Free fatty acid: Max. 1.5 %
Moisture: Max. 3.0 %
Melting point: 200 – 240 °C

Typical Product Characteristics
for Lithium Stearate

Ash content: 4.5 – 5.8 %
Free fatty acid: Max. 1.5 %
Moisture: Max. 1.0 %
Melting point: Min. 200 °C
Alkali stearates are salts of fatty acids. However, unlike traditional metallic stearates, including calcium, magnesium and zinc stearate (excluding lithium), alkali stearates are soluble in water. Baerlocher offers the following alkali stearates:    

Alkali Stearate

Trade Name

Applications

Product Form

NATRIUMOLEAT

Building Industry

Powder

NATRIUMSTEARAT AV

Rubber

Low dusting granules

NATRIUMSTEARAT SW

Rubber

Powder

LITHIUMSEIFE O

Grease

Powder

LITHIUMSEIFE I

Grease

Powder

LITHIUM-12-OXYSTEARAT

Grease

Powder

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Lithium Stearate

Lithium stearate is hydrophob, and swells in solvents. Moreover, because of its long fatty acid chains, lithium stearate leaves only minimal residue following heat treatment.   Additionally, lithium stearate is used as a thickener for natural and synthetic oils. It also raises the melting point and enhances the elasticity of microcrystalline waxes and paraffin. The dropping point of greases containing lithium stearate is much higher than those produced with aluminum stearates. Lithium stearate is also used in the manufacture of light weight metal moldings. Lithium stearates are available in powder form.

  • SW Powder

    • small particles, high active surface area
    • good dispersability in final applications
    • good compatibility with powder blends
    • medium bulk density
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Natrium Stearate

Sodium stearate is used as a swelling agent in alcohols, and as a lubricant and nucleating agent during the processing of thermoplastics. Sodium stearates are available in powder form.

  • SW Powder

    • small particles, high active surface area
    • good dispersability in final applications
    • good compatibility with powder blends
    • medium bulk density
  •

    AIB Fine to coarse particles

    • free-flowing
    • medium bulk density
    • excellent material handling
    • accurate Dosing
    • good dispersability in polymers
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Specialty metallic stearates

Upon request, Baerlocher offers metallic and alkali stearates comprising a mixture of fatty acids in liquid and solid form, plus a variety of mixed metal soaps.
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Metal Soaps

Metallic stearates are compounds of long-chain fatty acids with metals of different valences.

  • Zinc Stearate

  • Calcium Stearate

  • Magne­sium Stearate

  • Aluminium Stearate

  • Alkali Stearate