To recrystal ceftriaxone sodium in ethanol-water solution,the yield of 94 percent was reached,good flowablity and crystallization were largly improved and its good quanlity and stability were showed.

• 采用乙醇-水体系精制头孢曲松钠,收率可达94%25,产品流动性与晶型得到大幅度改善,产品质量和稳定性也有较大提高。