Pre-vulcanized Natural Rubber Latex
This is natural rubber latex that has been pre-vulcanized with sulfur and accelerators to partially cross-link the polymer chains, making it suitable for dipping processes in glove manufacturing. It falls under HTS 4001.10.00.00 as it remains in liquid primary form per chapter notes, retaining essential character as raw material despite vulcanizing agents for prevulcanized latex. Commonly used in medical and industrial gloves.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If coagulated into smoked sheets
Coagulated natural rubber in plates/sheets shifts to 4001.21 as it's no longer in liquid latex form but primary plates per note 3.
If latex waste from processing
Waste or scrap latex not usable as-is falls under 4004 per specific definition in chapter note 6.
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Import Tips & Compliance
• Verify concentration of total solids (typically 60%) and prevulcanization degree via lab testing to confirm classification as latex, not compounded rubber
• Provide certificates of analysis showing no prohibited additives like fillers or extenders beyond allowed emulsifiers per chapter note 5
• Ensure proper temperature-controlled shipping to prevent coagulation; declare as UN1263 for hazmat if ammonia-preserved
Related Products under HTS 4001.10.00.00
High Ammonia Natural Rubber Latex
Natural rubber latex preserved with high ammonia content (0.7-1.0%) to prevent coagulation during storage and transport, used in foam mattresses and carpets. Classified under HTS 4001.10.00.00 as primary liquid form with allowed preservatives that don't alter raw material character per chapter notes 1 and 5(b).
Centrifuged Natural Rubber Latex HA Type
HA (High Ammonia) type natural latex produced by centrifugation to 60% DRC, ideal for tire cord dipping and adhesive production. HTS 4001.10.00.00 applies as it's uncompounded liquid latex with minimal allowed stabilizers per chapter note 5(b).
Low Ammonia Natural Rubber Latex LA Type
LA type latex with reduced ammonia (0.2-0.4%) and secondary stabilizers for sensitive applications like condoms and balloons. Remains HTS 4001.10.00.00 as primary liquid form with permitted viscosity-control agents.
Field Latex Natural Rubber Concentrate
Fresh natural rubber latex concentrated in-field to 30-50% DRC before further processing, used in mattress foam production. Classifies under 4001.10.00.00 as primary liquid with allowed coagulants per chapter notes.
Vulcanization-Accelerated Natural Latex
Natural latex with minimal accelerators for controlled prevulcanization in surgical glove dipping lines. HTS 4001.10.00.00 per allowance for prevulcanized latex in note 5(a)(i).
Foam-Grade Natural Rubber Latex
Specially stabilized natural latex for latex foam rubber in upholstery and bedding. Falls under 4001.10.00.00 as uncompounded primary liquid with permitted foaming agents.