Aluminum monostearate

CAS Number
7047-84-9
EC Number
230-325-5

What is Aluminum monostearate?

Aluminum monostearate (CAS 7047-84-9), also known as Aluminum stearate 300 or dibasic aluminium stearate, is a metallic soap produced from aluminum and stearic acid.

Where is Aluminum monostearate used?

  • Lubricants and greases: thickens base oils into semi-solid consistencies for high-load bearing and metalworking
  • Plastics and polymers: internal lubricant and mold release agent
  • Construction sealants and coatings: modifies flow and improves water repellency of bituminous and solvent-based systems
  • Pharmaceutical and cosmetic formulators use it as a suspending and gelling agent in topical ointments, creams, and aerosol systems.

Commercial specifications

  • Purity typically 99% or above, depending on grade
  • Bulk supply in multi-kilogram bags or fiber drums

Other Names (Synonyms)

Al(OH)2C18H35O2.|Aluminum stearate 300|Dibasic aluminium stearate|Aluminium, dihydroxide stearate|P9BC99461E|Aluminum, dihydroxy(octadecanoato-O-)-|RefChem:556666|ALUMINUM MONOPALMITOSTEARATE

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What are the physical properties of Aluminum monostearate?

Melting Point 155 °C
Density 1.020
Color yellow-white
Form powder
Water Solubility insoluble H2O; forms gel with aliphatic and aromatic hydrocarbons [HAW93]
Log P 8.216 (est)

Which trade and regulatory codes apply to Aluminum monostearate?

Storage Class 11 - Combustible Solids
WGK (Germany) 3
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