Gypsum Board Dispersant Lignosulfonate from Mexico
Gypsum board dispersant lignosulfonate, a low-viscosity ammonium lignosulfonate solution optimized for gypsum slurry flow in wallboard manufacturing, derived from concentrated, desugared softwood pulp lyes. It is a residual lye from wood pulp, classifiable under tariff item 3804.00.00.
Duty Rate — Mexico → Canada
0%
Import Tips
• Confirm the product is a lignin sulphonate and not a formulated dispersant
• Provide documentation of the concentration and desugaring process
• Ensure the product does not contain tall oil