Chemistry:Ammonium stearate
From HandWiki
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| Names | |
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| IUPAC name
azanium;octadecanoate
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| Other names
Octadecanoic acid, ammonium salt
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| Identifiers | |
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CompTox Dashboard (EPA)
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| Properties | |
| C18H39NO2 | |
| Molar mass | 301.515 g·mol−1 |
| Appearance | Yellow-white powder |
| Melting point | 70-75 °F |
| soluble | |
| Hazards | |
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| GHS Signal word | Warning |
| H315 | |
| P264+265Script error: No such module "Preview warning".Category:GHS errors, P280, P305+351+338, P337+317Script error: No such module "Preview warning".Category:GHS errors | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Ammonium stearate is a chemical compound with the chemical formula CH
3(CH
2)
16COONH
4.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% NH
3 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 NH
3.
Uses
The compound is used to produce vanishing creams[5] and waterproofing cements.[6][7]
References
- ↑ "AMMONIUM STEARATE". cameochemicals.noaa.gov. https://cameochemicals.noaa.gov/chris/AMR.pdf.
- ↑ "Ammonium Stearate | The Merck Index Online". merckindex.rsc.org. https://merckindex.rsc.org/monographs/m1820.
- ↑ Allen, Alfred Henry (1898) (in en). 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. https://books.google.com/books?id=a-EMAAAAYAAJ&dq=ammonium+stearate&pg=PA257. Retrieved 18 March 2025.
- ↑ Milne, G. W. A. (19 August 2005) (in en). Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and Properties. John Wiley & Sons. p. 36. ISBN 978-0-471-73661-5. https://books.google.com/books?id=oWdc2qcb3QsC&dq=ammonium+stearate&pg=PA36. Retrieved 18 March 2025.
- ↑ Panda, H. (9 April 2015) (in en). Herbal Cosmetics Handbook (3rd Revised ed.). ASIA PACIFIC BUSINESS PRESS Inc.. p. 85. ISBN 978-81-7833-080-8. https://books.google.com/books?id=bI2NDAAAQBAJ&dq=ammonium+stearate+vanishing+creams&pg=PA85. Retrieved 18 March 2025.
- ↑ Al-Jabari, Maher (17 June 2022) (in en). 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. https://books.google.com/books?id=IIdGEAAAQBAJ&dq=ammonium+stearate+waterproofing+cement&pg=PA256. Retrieved 18 March 2025.
- ↑ (in en) Decisions of Commissioner of Patents and U.S. Courts in Patent and Trademark and Copyright Cases. U.S. Government Printing Office. 1942. p. 372. https://books.google.com/books?id=a9mxAAAAMAAJ&dq=ammonium+stearate+waterproofing+cement&pg=PA372. Retrieved 18 March 2025.
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