48.
    发明专利
    未知

    公开(公告)号:MX6430E

    公开(公告)日:1985-05-30

    申请号:MX957881

    申请日:1981-07-28

    Applicant: DEGUSSA

    Abstract: Crude nicotinamide is purified by a recrystallization and in this way freed especially from nicotinic acid and salts of nicotinic acid. As solvent there is used a 2-methylpropanol-1 containing water. The recrystallization takes place at a pH between about 7 and 10.

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