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Lanspec OF56

Product Category: Anionics

Alky Ether Sulfate Ammonium Salt

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Lanspec OF56 is an ammonium neutralised alkyl ether sulphate and finds application where high foaming, characteristics are required, particularly in the presence of highly levels of electrolyte and polyvalent metal ions. Lanspec OF56 has good stability in the presence of alkaline solutions at moderate temperatures, but will hydrolyse in acidic solutions. Lanspec OF56 finds applications in a range industries due to it’s key properties which include:

Key Properties

  • High foaming surfactant

  • Effective foaming agent for electrolyte solutions e.g. brine, seawater

  • High foaming in the presence of polyvalent ions e.g. calcium magnesium

  • Good foam stability in the presence of hydrocarbons

  • Easily dilutable in cold water


  • General purpose foaming agent

  • Oilfield foam drilling

  • Gas well deliquification

  • Foaming agent for plasterboard


Appearance at 25°C

Pale yellow liquid

SAM % (equivalent weight 367)

55.0 - 57.0

pH (5% aqueous)

6.0 - 7.5

Typical Properties


Alkyl ether sulfate ammonium salt

Specific gravity at 20°C


Viscosity at 20°C  (centistokes)


Activity %


pH (10% aqueous)

6.5 - 8.0

Pour point °C




Solubility in water at 20°C


Flash point - closed cup °C


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