| 摘要 |
Disclosed is a novel hydrotalcite compound which is environmentally friendly and can exhibit an excellent metal corrosion preventive effect when used in a small amount. Also disclosed is an inorganic ion scavenger comprising the hydrotalcite compound. The hydrotalcite compound is represented by the formula (1), and has a peak corresponding a hydrotalcite compound in a powder X-ray diffraction pattern, wherein the peak has an intensity of 3,500 cps or higher at 2R = 11.40 to 11.70 and a BET specific surface area of greater than 30 m/g. MgAl(OH)(CO)·nHO (1) wherein a, b, c and d independently represent a positive number, provided that a, b, c and d satisfy the relationship represented by the following formula: 2a+3b-c-2d = 0; and n represents the hydration number and is 0 or a positive number. |
