The visible spectra of excited cuprous monochloride molecule generated fromcombustion of copper compounds with chlorine-containing oxidants has been stu-died by flame spectra.The influences of oxidants

reductants and copper compo-unds on the D→X

E→X band transitions were explored concomitantly.The re-sults showed:selection of oxidant is important in producing a deep blue flamewith D

E band populated dominantly.Furthermore

notice should be paid onselecting and adjusting of reductants.Variety of copper compounds has no sign-ificant effect on quality of blue flame