COMPOSITION OF LONG LIFE COOLANTS

摘要

An antifreezing solution composition is provided to ensure excellent anti-corrosion against light water, anti-corrosion against severe diluted solution and inhibition for blackening of aluminum-based metal. An anti-freezing liquid composition having a long life comprises a barium compound 0.001~0.1 weight%; at least one 0.5~4.0 weight% elected from C4~12 aliphatic dibasic acid, its ammonium salt and its alkaline metal salt; at least one 0.5~5.0 weight% selected from aromatic monobasic acid, its ammonium salt and its alkaline metal salt; phosphate 0.1~0.5 weight%; nitrate 0.3~1.0 weight%; azoles 0.01~1.0 weight%; sequestrant 0.005~0.5 weight%; glycohols 85.0~95.0 weight%; ion exchanged water 2.0~3.0 weight%; and pH controller 1.0~3.0 weight%.