1 Chemical agents for use in soldering in the microelectronics industry; electronic-grade chemical agents for use in soldering in the microelectronics industry; chemical agents for use in screen printing, dispensing and jetting in soldering in the microelectronics industry; chemical agents for use in soldering in the microelectronics industry, namely, in the semiconductor industry; chemical agents for use in soldering in the microelectronics industry, namely, chemical agents for use in clean room applications; all the aforementioned goods preferably for use in chip-production, namely, as soldering preparations comprising solder metal alloys and flux, conductive inks comprising solder metal and its alloys and flux for use in surface-mountable devices (SMD), surface-mountable technology (SMT), through-hole technology (THT), pin-in-hole technology (PIH), System in Package (SIP), System on-chip (SoC), monolithic integration in a semiconductor (IC), and electric circuits boards with pitches and line spacing from 100 nanometers up to 200 micrometers, in particular wherein the particles of the powder have a particle size of less than 50 micrometers, in particular comprising the metals tin, copper, zinc, bismuth and silver and an alloy of at least of two of the metals; all the above mentioned goods preferably for use in chip-production, namely, electronic-grade chemical agents for use in soldering in the microelectronics industry for surface-mountable devices (SMD), surface-mountable technology (SMT), through-hole technology (THT), pin-in-hole technology (PIH), System in Package (SIP), System on-chip (SoC), monolithic integration in a semiconductor (IC), and electric circuits boards with pitches and line spacing from 100 nanometers up to 200 micrometers, in particular wherein the particles of the powder have a particle size of less than 50 micrometers, in particular comprising the metals tin, copper, zinc, bismuth and silver and an alloy of at least of two of these metals; all of the above-mentioned goods comprising tin; all the above-mentioned goods not for soldering of water pipes, copper pipes, gutters, jewelry and iron-containing components, and in the field of gas and water pipes