Sodium Gluconate Concrete Retarder from Canada
Specialty sodium gluconate formulated as concrete set retarder for hot weather pouring applications. Classified under 2918.16.50.10 as pure sodium gluconate meeting chapter purity requirements. Used at 0.2-0.5% dosage in ready-mix concrete.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Declare as pure chemical even when marketed for concrete; end-use doesn't change heading
• Provide dosage recommendations proving <1% use rate maintains chemical identity
• Watch for reclassification if pre-diluted beyond chapter note (d) water limits