The object of the present invention is to reduce the odor of acetic acid, further suppress solidification by storage, degradation of glucose when coexisting with glucose, and pH increase when dissolved in water, and a solid state excellent in storage stability. It is to provide agent A for hemodialysis. A solid A preparation for hemodialysis comprising a first fraction substantially composed of only one of magnesium chloride and potassium chloride and composed of a granulated material containing calcium chloride, and a second fraction containing acetic acid and acetate. By including the fraction, the above-mentioned problem can be solved. 本発明の目的は、酢酸臭を低減でき、更に保存による固化、ブドウ糖を共存させた際のブドウ糖の分解、及び水に溶解した時のpH上昇を抑制でき、保存安定性に優れた固体状の血液透析用A剤を提供することである。 固体状の血液透析用A剤を、塩化マグネシウム及び塩化カリウムの一方のみを実質的に含み、且つ塩化カルシウムを含む造粒物で構成された第1画分と、酢酸及び酢酸塩を含む第2画分とを含むことによって、前記課題を解決できる。