Ammonium stearate

Ammonium stearate

Names
IUPAC name azanium;octadecanoate
Other names Octadecanoic acid, ammonium salt
Identifiers
CAS Number	1002-89-7  N
3D model (JSmol)	Interactive image
ChemSpider	55192
EC Number	213-695-2
PubChem CID	9861187
UNII	37899330TZ
CompTox Dashboard (EPA)	DTXSID0027353
InChI InChI=1S/C18H36O2.H3N/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);1H3 Key: JPNZKPRONVOMLL-UHFFFAOYSA-N
SMILES CCCCCCCCCCCCCCCCCC(=O)[O-].[NH4+]
Properties
Chemical formula	C18H39NO2
Molar mass	301.515 g·mol−1
Appearance	Yellow-white powder
Melting point	70-75 °F
Solubility in water	soluble
Hazards
GHS labelling:
Pictograms
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ammonium stearate is a chemical compound with the chemical formula CH₃(CH₂)₁₆COONH₄.This is an organic ammonium salt of stearic acid. ^{[1] [2]}

Synthesis

The compound can be prepared by reacting stearic acid and excess 28-30% NH₃ solution. Also by reacting stearic acid and ammonium carbonate or ammonium hydroxide. ^[3]

Physical properties

The compound forms yellow-white powder.

Soluble in methanol and ethanol; slightly soluble in water, benzene, xylene, naphtha; practically insoluble in acetone. ^[4]

When heated, the powder of ammonium stearate decomposes, releasing toxic fumes of NH₃.

Uses

The compound is used to produce vanishing creams ^[5] and waterproofing cements. ^{[6] [7]}

References

1. "AMMONIUM STEARATE" (PDF). cameochemicals.noaa.gov. Retrieved 18 March 2025.
2. "Ammonium Stearate | The Merck Index Online". merckindex.rsc.org. Retrieved 18 March 2025.
3. Allen, Alfred Henry (1898). Commercial Organic Analysis: Part I. Fixed oils, fats, waxes, glycerol, nitroglycerin and nitroglycerin explosives. 3. ed., with revisions and addenda by the author and Henry Leffmann. x, 17-387 pp. 8vo Phila., 1905. P. Blakiston. p. 257. Retrieved 18 March 2025.
4. Milne, G. W. A. (19 August 2005). Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties. John Wiley & Sons. p. 36. ISBN   978-0-471-73661-5 . Retrieved 18 March 2025.
5. Panda, H. (9 April 2015). Herbal Cosmetics Handbook (3rd Revised Edition). ASIA PACIFIC BUSINESS PRESS Inc. p. 85. ISBN   978-81-7833-080-8 . Retrieved 18 March 2025.
6. Al-Jabari, Maher (17 June 2022). Integral Waterproofing of Concrete Structures: Advanced Protection Technologies of Concrete by Pore Blocking and Lining. Woodhead Publishing. p. 256. ISBN   978-0-12-824355-8 . Retrieved 18 March 2025.
7. Decisions of Commissioner of Patents and U.S. Courts in Patent and Trademark and Copyright Cases. U.S. Government Printing Office. 1942. p. 372. Retrieved 18 March 2025.