Modified Styrene Acrylic Concrete Superplasticizer

High-range water reducer blending styrene (aromatic) and acrylic polymers over 5% by weight for self-compacting concrete. Falls under 3824.40.10.00 as aromatic-containing prepared concrete additive. Enables pumpable mixes with superior slump retention.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+35.0%41.5%
🇲🇽Mexico6.5%+10.0%16.5%
🇨🇦Canada6.5%+10.0%16.5%
🇩🇪Germany6.5%+10.0%16.5%
🇯🇵Japan6.5%+10.0%16.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3824.40Same rate: 41.5%

If aromatic content below 5% threshold

Sub-5% aromatics classified under non-aromatic cement additive provisions.

3906.90.50.00Lower: 29.2% vs 41.5%

If imported as unfinished acrylic polymer mixture

Semi-processed polymers not fully formulated as additives go to Chapter 39 plastics.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Test for exact styrene monomer content via GC-MS; ensure container labels match HTS description

Beware of anti-dumping duties on certain Asian origins

Related Products under HTS 3824.40.10.00

Aromatic Plasticizer Concrete Admixture

A liquid additive for cement and concrete mixes containing over 5% aromatic substances like alkylbenzene sulfonates to improve workability and reduce water demand. It falls under HTS 3824.40.10.00 due to its high aromatic content used as a prepared additive for concretes. This ensures better flow and strength in construction applications.

Polystyrene-Based Cement Dispersant

A powdered dispersant with modified polystyrene (aromatic polymer) exceeding 5% by weight, added to concrete to prevent clumping and enhance uniformity. Classified in 3824.40.10.00 for its aromatic-modified substances in concrete preparations. Ideal for high-performance ready-mix applications.

Aromatic Sulfonate Water Reducer for Mortar

Concentrated liquid water-reducing agent with sodium naphthalene sulfonate (>5% aromatic) for mortars and concretes, improving strength by minimizing water. HTS 3824.40.10.00 applies due to aromatic substance threshold in prepared additives. Commonly used in tile adhesives and masonry.

Benzene Derivative Accelerating Admixture for Concrete

Set-accelerating liquid with benzene-based compounds (>5% aromatics) to speed concrete curing in cold weather. HTS 3824.40.10.00 for aromatic prepared additives in concretes. Reduces waiting time for formwork removal.

Toluene-Modified Air Entraining Agent

Foaming additive with toluene-modified resins (aromatic >5%) creating microscopic air bubbles in concrete for freeze-thaw resistance. Classified 3824.40.10.00 as aromatic concrete preparation. Essential for durable pavements and bridges.

Xylene-Based Waterproofing Concrete Additive

Penetrating sealer admixture with xylene derivatives (>5% aromatics) for hydrophobic concrete surfaces. HTS 3824.40.10.00 due to aromatic content in mortar/concrete preparations. Prevents water ingress in basements and pools.