The invention relates to a
chemical cleaning material, and in particular to a special
chemical cleaning material for removing scale of a
water heater. The special antiscaling agent for the
water heater is characterized by being formed by mixing components A, B, C and C, wherein the component A is an acidic antiscaling component which is 70 to 95% in percentage by weight; the component B is an
adhesive which is 2 to 8% in percentage by weight; the component C includes a
metal ion chelating agent and a curing agent, which is 2 to 20% in percentage by weight; and the component D is a
corrosion inhibitor, which is 1 to 5% in percentage by weight. With the adoption of the prescription, the special antiscaling agent for the
water heater provided by the invention has the advantages of being relatively low
corrosion to
metal, and high antiscaling performance; and moreover, the special antiscaling agent can be manufactured in a certain shape, and the dimension is in line with that of a
sewage draining port of the water heater; and the antiscaling agent can be directly added to the water heater through the
sewage draining port; the problem that the powdered material or liquid is hardly added can be solved; the antiscaling agent is convenient and quick to use, and the operation is simple to carry out.