silver stearate
{{Chembox
| ImageFile = Silver stearate.svg
| ImageSize = 250px
| ImageAlt =
| PIN =
| OtherNames = silver octadecanoate
|Section1={{Chembox Identifiers
| CASNo = 3507-99-1
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo_Comment =
| ChemSpiderID = 141200
| DTXSID =
| EC_number = 222-505-7
| PubChem = 160695
| UNII = 4H6PCL92ZN
| StdInChI= 1S/C18H36O2.Ag/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);/q;+1/p-1
| StdInChIKey = ORYURPRSXLUCSS-UHFFFAOYSA-M
| SMILES = CCCCCCCCCCCCCCCCCC(=O)[O-].[Ag+]
}}
|Section2={{Chembox Properties
| Formula = {{chem|C|18|H|36|Ag|O|2}}
| MolarMass = 392.3
| Appearance = white powder
| Density =
| MeltingPtC =
| BoilingPtC = 359.4
| Solubility = insoluble }}
|Section3={{Chembox Hazards
| MainHazards =
| GHS_ref=
| GHSPictograms =
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|302|312|315|319|332|335}}
| PPhrases =
| FlashPtC = 162.4
| AutoignitionPt = }}
|Section6={{Chembox Related
| OtherCations =
| OtherCompounds =
}}
}}
Silver stearate is a metal-organic compound with the chemical formula {{chem|C|18|H|36|Ag|O|2}}. The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid (stearic acid).{{cite journal |last1=Lin |first1=Bin |last2=Dong |first2=Jingshan |last3=Whitcomb |first3=David R. |last4=McCormick |first4=Alon V. |last5=Davis |first5=H. Ted |title=Crystallization of Silver Stearate from Sodium Stearate Dispersions |url=https://pubs.acs.org/doi/10.1021/la048793g |journal=Langmuir |access-date=7 February 2023 |pages=9069–9074 |language=en |doi=10.1021/la048793g |date=1 October 2004|volume=20 |issue=21 |pmid=15461488 }}{{cite journal |last1=Nyam-Osor |first1=M |last2=Soloviov |first2=D V |last3=Kovalev |first3=Yu S |last4=Zhigunov |first4=A |last5=Rogachev |first5=A V |last6=Ivankov |first6=O I |last7=Erhan |first7=R V |last8=Kuklin |first8=A I |title=Silver behenate and silver stearate powders for calibration of SAS instruments |journal=Journal of Physics: Conference Series |date=30 March 2012 |volume=351 |issue=1 |pages=012024 |doi=10.1088/1742-6596/351/1/012024 |bibcode=2012JPhCS.351a2024N |s2cid=137123053 |doi-access=free }}{{cite book |last1=Diamond |first1=Arthur S. |title=Handbook of Imaging Materials |date=8 October 2018 |publisher=CRC Press |isbn=978-1-4822-7736-4 |page=515 |url=https://books.google.com/books?id=w2K1DwAAQBAJ&dq=silver+stearate&pg=PA515 |access-date=7 February 2023 |language=en}}
Synthesis
Silver stearate can be obtained by the reaction of sodium stearate and silver nitrate.
Also by the reaction of stearic acid and silver nitrate in presence of DBU.{{cite journal |last1=Basel |first1=Siddhant |last2=Bhardwaj |first2=Karishma |last3=Pradhan |first3=Sajan |last4=Pariyar |first4=Anand |last5=Tamang |first5=Sudarsan |title=DBU-Catalyzed One-Pot Synthesis of Nearly Any Metal Salt of Fatty Acid (M-FA): A Library of Metal Precursors to Semiconductor Nanocrystal Synthesis |journal=ACS Omega |date=31 March 2020 |volume=5 |issue=12 |pages=6666–6675 |doi=10.1021/acsomega.9b04448 |pmid=32258902 |pmc=7114616 |s2cid=214989827 }}
Physical properties
Silver stearate forms white powder.{{cite web |title=Silver stearate (CAS 3507-99-1) {{!}} Glentham Life Sciences |url=https://www.glentham.com/en/products/product/GK5303/ |publisher=glentham.com |access-date=7 February 2023 |language=en}}
Silver stearate crystals are of triclinic crystal system; cell parameters a = 0.5431 nm, b = 4.871 nm, c = 0.4120 nm, α = 90.53°, β = 122.80°, γ = 90.12°, Z = 2.
The compound is insoluble in water, ethanol, diethyl ether.
References
{{Reflist}}
{{Stearates}}
{{Silver compounds}}
{{Inorganic-compound-stub}}