reasonably priced
timely delivery
excellent and stable quality
many years' production experience
Brown powder. It is red and only yellow to water to dissolve ,
dissolve dissolving finely and plainly a little , does not dissolve
in other organic solvents . Dark dark red in the dense sulphuric
acid, turn dark yellow after diluting (have brown that is
precipitated sometimes); Dissolve black partly in the dense
hydrochloric acid; Turn olive colour to dissolve partly yellowly
and brownly in the dense nitric acid. Aqueous solution its add *0%
sulphuric acid turn dark slightly , add strong hydrochloric acid
getting yellow to present olive , add strong NaOH liquid present
money orange precipitate. Meet color light simply green copper ,
meet color light slightly red and dark iron , meet zinc and ammonia
become pale yellow and getting orange. This product has stronger
decreasing function photosensitivly and fragily
