TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent is toluene, heptane, hexane, benzene, cyclohexane, pentane, bromobenzene, chlorobenzene and/or hydrocarbons. The weight ratio of organic solvent to the first amount organoamine is 1:0.8-1:1.2, and the weight ratio of the first amount of organoamine to the second amount organoamine is 1.7:1-1:1.7. The hydrazine is of formula (R1R2N-NR3R4). The hydrazine is first added to a solvent, the solvent is an alcohol e.g. methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol or octanol, a hydrocarbon solvent e.g. pentane, hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, tridecane, tetradecane, toluene, xylene, mesitylene or tetrahydrofurane, or other solvents e.g. chlorobenzene, dichlorobenzene, trichlorobenzene, nitrobenzene, cyanobenzene and/or acetonitrile. The organoamine stabilized silver nanoparticle has an average diameter of 1-1000 nm and a narrow particle size distribution. The difference between the diameter of the largest organoamine stabilized silver nanoparticle and the diameter of the smallest stabilized nanoparticle organoamine is 10 nm. The organoamine stabilized silver nanoparticle has a silver content of at least 85%. The silver salt is silver acetate, silver nitrate, silver oxide, silver acetylacetonate, silver benzoate, silver bromate, silver bromide, silver carbonate, silver chloride, silver citrate, silver fluoride, silver iodate, silver iodide, silver lactate, silver nitrite, silver perchlorate, silver phosphate, silver sulfate, silver sulfide and/or silver trifluoroacetate, and the molar ratio of silver salt to the total organoamine is approximately 1:5. Preferred Method: The method comprises mixing the organic solvent and a first amount of organoamine, and heating the solution to an initial temperature of 50-80 degrees C, and optionally cooling the solution to a second temperature, which is below the first temperature, adding a second amount of organoamine, where the second temperature is 40-60 degrees C and the cooling takes place over a period of 45 minutes or more. The method further comprises removing the silver nanoparticles from the solution by adding an alcohol and a non-solvent to the solution, where the non-solvent is acetone, methanol, ethanol, propanol, methyl ethyl ketone, acetonitrile and/or isobutyl alcohol, and washing the silver nanoparticles.R1-R4 = H, 1-30C alkyl or 6-48C aryl. EXAMPLE - Hexadecylamine was preheated to melt in a conventional oven at 50-60 degrees C. 1-Hexadecylamine (90% purity, 723 g) and toluene (700 ml) were stirred under nitrogen atmosphere and heated at 65 degrees C. Then silver acetate (99% purity, 200 g) were added to the solution and then an additional amount of toluene (100 ml) was added. A second portion of hexadecylamine (723 grams) was poured into the solution and the reaction mixture before the reduction was cooled over a period of 1 hour at 55 degrees C. The molar ratio of silver salt to the total organoamine is 1:5. After 20 minutes, phenylhydrazine (97% purity, 71.5 g) diluted in toluene (60 ml) was added to the solution. The solution adopted a black-red color, indicating the reduction of the silver particles. The solution was mixed for another 15 minutes to complete the reduction reaction. The solution was then cooled to below 50 degrees C and the product was precipitated by the addition of methanol (1600 ml) and isopropanol (3900 ml). The solution adapted a dark purple/blue color. The mixture was mixed for 10 minutes, then drained and placed in a vacuum filtration unit transferred having a filter with 8 inch diameter and a 0.5 micron Goretex membrane. The metallic blue filter cake was dispersed in isopropanol (2400 ml) to prevent any residual amine and to remove any byproducts from the reaction and filtered using the same filter medium. The filter cake was suspended in isopropanol and washed again for half an hour and filtered using the same filter unit. The particles were then dried overnight at 30-40 degrees C in a vacuum oven. The final yield of product was 145 grams (96% theoretical value) and the product contained 86% of silver.