GST classification of glycerol as Schedule 3 goods attracts an 18% rate until 21-09-2025. Crude glycerol and glycerol waters and lyes are classified under Goods - Schedule 3 and are subject to an 18% GST rate; this classification and rate apply up to 21-09-2025, determining the taxable character and applicable GST treatment of supply, import or manufacture of these goods during the specified period.