Tariff Schedule Rulings D-Memoranda Trade Remedies PGA Requirements Sanctions Regimes

Heading 3913

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms.

2 subheadings

Subheadings

3913.10

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms. - Alginic acid, its salts and esters

1 tariff items
3913.90

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms. - Other

3 tariff items

Related Advance Rulings

C-2021-000828

&&Biofloc is a solution containing 50 grams of pure chitosan dissolved in acetic acid and water. Chitosan is a polysaccharide composed of...

HS 3913.90.00.80
C-2021-000775

&&Quitoven 95 is pure chitosan, which is deacetylated Chitin in the form of oats (flakes). Chitosan is a polysaccharide composed of glucosamine...

HS 3913.90.00.80

Explanatory Notes

Section 11 of the Customs Tariff states that in interpreting the headings and subheadings, regard shall be had to the World Customs Organization's (WCO) Explanatory Notes to the Harmonized Commodity Description and Coding System. General Interpretative Rule 1 (GIR 1) directs that titles of Sections, Chapters and sub-Chapters are provided for ease of reference only. For legal purposes,...

Source: advance_ruling (C-2021-000775)

Alginic acid, its salts and esters See the HS Explanatory Note to heading 3913 , first paragraph, (1)

Source: eu_cn_en (EUR-Lex 02019XC0329(02)-20250113)

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms

Source: eu_cn_en (EUR-Lex 02019XC0329(02)-20250113)

Other See the HS Explanatory Note to heading 3913 , first paragraph, (2) to (4).

Source: eu_cn_en (EUR-Lex 02019XC0329(02)-20250113)

&&Section 10 of the Customs Tariff directs that classification of imported goods shall be determined in accordance with the General Rules for the Interpretation of the Harmonized System. Section 11 of the Customs Tariff states that in interpreting the headings and subheadings, regard shall be had to the World Customs Organization's (WCO) Explanatory Notes to the Harmonized Commodity...

Source: advance_ruling (C-2021-000828)

Chapter 39 Notes (11)
1. 1. Throughout the Nomenclature the expression "plastics" means those materials of headings 39.01 to 39.14 which are or have been capable, either at the moment of polymerisation or at some subsequent stage, of being formed under external influence (usually heat and pressure, if necessary with a solvent or plasticiser) by moulding, casting, extruding, rolling or other process into shapes which are retained on the removal of the external influence. Throughout the Nomenclature any...
2. 2. This Chapter does not cover: • (a) Lubricating preparations of heading 27.10 or 34.03; • (b) Waxes of heading 27.12 or 34.04; • (c) Separate chemically defined organic compounds (Chapter 29); • (d) Heparin or its salts (heading 30.01); • (e) Solutions (other than collodions) consisting of any of the products specified in headings 39.01 to 39.13 in volatile organic solvents when the weight of the solvent exceeds 50% of the weight of the solution (heading 32.08); stamping foils of...
3. 3. Headings 39.01 to 39.11 apply only to goods of a kind produced by chemical synthesis, falling in the following categories: • (a) Liquid synthetic polyolefins of which less than 60% by volume distils at 300°C, after conversion to 1,013 millibars when a reduced-pressure distillation method is used (headings 39.01 and 39.02); • (b) Resins, not highly polymerised, of the coumarone-indene type (heading 39.11); • (c) Other synthetic polymers with an average of at least 5 monomer units; •...
4. 4. The expression "copolymers" covers all polymers in which no single monomer unit contributes 95% or more by weight to the total polymer content. For the purpose of this Chapter, except where the context otherwise requires, copolymers (including co-polycondensates, co-polyaddition products, block copolymers and graft copolymers) and polymer blends are to be classified in the heading covering polymers of that comonomer unit which predominates by weight over every other single comonomer...
5. 5. Chemically modified polymers, that is those in which only appendages to the main polymer chain have been changed by chemical reaction, are to be classified in the heading appropriate to the unmodified polymer. This provision does not apply to graft copolymers.
6. 6. In headings 39.01 to 39.14, the expression "primary forms" applies only to the following forms: • (a) Liquids and pastes, including dispersions (emulsions and suspensions) and solutions; • (b) Blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms.
7. 7. Heading 39.15 does not apply to waste, parings and scrap of a single thermoplastic material, transformed into primary forms (headings 39.01 to 39.14).
8. 8. For the purpose of heading 39.17, the expression "tubes, pipes and hoses" means hollow products, whether semi-manufactures or finished products, of a kind generally used for conveying, conducting or distributing gases or liquids (for example, ribbed garden hose, perforated tubes). This expression also includes sausage casings and other lay-flat tubing. However, except for the last-mentioned, those having an internal cross-section other than round, oval, rectangular (in which the...
9. 9. For the purpose of heading 39.18, the expression "wall or ceiling coverings of plastics" applies to products in rolls, of a width not less than 45 cm, suitable for wall or ceiling decoration, consisting of plastics fixed permanently on a backing of any material other than paper, the layer of plastics (on the face side) being grained, embossed, coloured, design-printed or otherwise decorated.
10. 10. In headings 39.20 and 39.21, the expression "plates, sheets, film, foil and strip" applies only to plates, sheets, film, foil and strip (other than those of Chapter 54) and to blocks of regular geometric shape, whether or not printed or otherwise surface-worked, uncut or cut into rectangles (including squares) but not further worked (even if when so cut they become articles ready for use).
11. 11. Heading 39.25 applies only to the following articles, not being products covered by any of the earlier headings of sub-Chapter II: • (a) Reservoirs, tanks (including septic tanks), vats and similar containers, of a capacity exceeding 300 litres; • (b) Structural elements used, for example, in floors, walls or partitions, ceilings or roofs; • (c) Gutters and fittings therefor; • (d) Doors, windows and their frames and thresholds for doors; • (e) Balconies, balustrades, fencing,...

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