Black-brown thin-band powder with an admixture of white particles has the same properties as a solid film of black with white coating. Gas release begins at a temperature of 200 ° C; Above 700 ° C, a seduced test turns into a white powder with a yellow tint.
High -quality chemical analysis found ions of zinc, zinc oxide and gas sunbathing with explosion; X-ray-structural-ocean 20% metal zinc and zinc oxide; polarographic – 70.8% of zinc ions; Complexonometric – 67.5% of zinc ions; Thermographic-heat effects at temperatures of about 220, 400 and 700 ° C.
Colorless gas obtained as a result of the decomposition of zinc corrosion products, when ignition, lights up with an explosion. Chromatographic analysis found the hydrogen content – 78.5%; nitrogen – 11.78%; oxygen – 3.1% – carbon monoxide – 5.08; methane – 0.96%; ethane – 0.23%; ethylene – 0.006% and other maximum and unsaturated hydrocarbons – 0.113%.
The presence of zinc oxide in corrosion products was additionally confirmed by a positive reaction to the authenticity of zinc – yellowing of a part of white particles when heated and restored the previous color when cooling. The other part of the white powder did not change the color when heated. The experiments also showed that with a long stay of corrosion products, gas bubbles appear in water, which, obviously, indicates a slow hydrolysis of the compound.
