The invention provides a corrosive for the revealing of the 
silicon steel solidification structure. The invention has the component and blending ratio of the corrosive that 0.9 to 1.2 
gram of a picronitric acid and / or 0.9 to 1.2 
gram of a stannous acid, 10 to 20 
gram of a 
ferric chloride, 20 to 50 milliliter of an absolute ethyl 
alcohol, 15 to 18 milliliter of a 
hydrochloric acid, 0.2 to 0.5 gram of a 
copper chloride, 0.2 to 0.5 gram of a 
magnesium chloride and 80 to 100 milliliter of a 
distilled water. The invention has the dosing method of the corrosive that the picronitric acid and / or the stannous acid and the 
ferric chloride are put into a container; the 
distilled water is divided into two shares, and one share is added into a 
medicine container; the absolute ethyl 
alcohol is divided into two shares, one share is added into an 
aqueous solution which is mixed with 
medicine, and the other share is added into the 
distilled water; the 
hydrochloric acid is added into the ethyl 
alcohol aqueous solution; the 
aqueous solution containing ethyl alcohol and 
hydrochloric acid is poured into the aqueous solution which is mixed with 
medicine, and the 
copper chloride and the 
magnesium chloride are added in. The 
chemical agent which is used in the corrosive reciprocally reacts mutually and has the strong conditionality, the efficiency of the core corrosive is exerted without forming a surface 
precipitation membrane, and a clear tree like 
crystal shape can be directly observed; the corroding time of the corrosive is short, and is suitable for a 
large size continuous casting semi finished 
metal; the dosing method of the corrosive is scientific, and the operating procedure is simple, convenient and easy to operate.