Section 76. The commission may annually grant licenses for the manufacture, transportation, importation, exportation and sale of alcohol for mechanical, manufacturing or chemical purposes only, or for sale to any person holding a license under section eighteen or nineteen, to any registered pharmacist holding a certificate of fitness, any registered physician or dentist, or to any hospital or educational or scientific institution for use other than for beverage purposes. Licenses shall be granted under this section only if it appears that the applicant therefor is a proper person to receive such a license. The fee for a license hereunder shall be not less than three hundred nor more than five hundred dollars. Nothing contained in said section eighteen shall limit the scope of a license issued under this section.