Surfactants
REACH
Ammonium stearate
CAS Number
1002-89-7
EC Number
213-695-2
What is Ammonium stearate?
Ammonium stearate (CAS 1002-89-7), the ammonium salt of stearic acid, functions as an emulsifier, rheology modifier, and foam control agent.
Where is Ammonium stearate used?
- Construction: waterproofing compounds and masonry treatments
- Rubber and tire compounding: processing aid and dispersing agent
- Personal care: viscosity builder and emulsion stabiliser in creams and lotions
- Textile and leather processing: softening and finishing agent
- It enables stable dispersion of hydrophobic materials in aqueous systems.
Commercial specifications
- Standard concentrations in solution form typically range around 33–35% active content.
Other Names (Synonyms)
ammonium octadecanoate|Octadecanoic acid, ammonium salt|37899330TZ|RefChem:112206|Stearic acid, ammonium salt|Octadecanoic acid, ammonium salt (1:1)|Stanfax 320
What are the physical properties of Ammonium stearate?
Melting Point 22 °C
Boiling Point 442.62°C (rough estimate)
Density 0.8900
Appearance cream or light yellow powder
Color yellow-white
Odor wh. to tan wax-like solid, free from ammonia odor
Form yellow-white powder
Water Solubility soluble H2O [MER06]; soluble hot toluene [HAW93]
Refractive Index 1.5000 (estimate)
Log P 8.216 (est)
How is Ammonium stearate classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H319 Causes serious eye irritation
Precautionary Statements
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P264+P265 Wash … thoroughly after handling.
P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.