Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 36 Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent. 29 36 22 Vitamin B1 and its derivatives, unmixed Commodity Code Description 29 36 22 00 Vitamin B1 and its derivatives, unmixed