Abstract: A method for synthesis of nanoparticles of Mercury Cadmium Telluride (MCT), the said method comprising the steps of a) taking a salt of mercury in a SS autoclave. b) adding a cadmium salt or cadmium powder to the said autoclave. c) adding a tellurium powder. d) adding a coordinating solvent to the above mixture. e) adding about 5-10mg or 3-5ml of a strong reducing agent to the resulting mixture. f)closing the said autoclave and keeping it in an oven at temperature of 80deg. C - 200deg. C for a period of 10-50 hours. g) allowing the said autoclave to cool down naturally inside the oven to room temp. h) filtering the resulting content of the autoclave. i) washing the residue with double distilled water and then preferrably with absolute ethanol. j)drying the resulting residue in vaccum for 1-3 hours at a temperature of 40-75deg.C.