Biodegradable aqueous solution of marking colour

摘要

An aqueous biodegradable marker dye solution for marking a tree trunk, which also contains an anticorrosive agent, characterized in that the aqueous marker dye solution consists of 40-60 wt% glycerol, 35-55 wt% water, 0.1-2 wt% dye, 0.1 2% by weight of an anticorrosive agent and 0-3% by weight of an additive such as an antifoam agent, however, the total amount of glycerol and water in said aqueous solution is preferably greater than 95% by weight, preferably more than 97% by weight. In addition, protection requirements 2-12.