Supplymo
HS 2022 · 6-digit international code

HS Code 990203

6-digit classification for 2-{[2,4,8,10-Tetrakis(2-methyl-2-pr…, with duty lookup and 1688 checks before payment

Official description: 2-{[2,4,8,10-Tetrakis(2-methyl-2-propanyl)diben- zo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy}-N,N-bis(2-{[2,4,8,10-tetra- kis(2-methyl-2-propanyl)dibenzo[d,f][1,3,2]dioxaphos- phepin-6-yl]oxy}ethyl)ethanamine (CAS No. 80410-33-9) (provided for in subheading 2922.19.60)

Also searched as: antioxidant, phosphite stabilizer, polymer additive, chemical stabilizer

Check duty for HS 990203Submit product
Official-source linksSame HS6 starting point worldwideBuilt for 1688 buyers

Classification

How 990203 breaks down

HS 2022
99Chapter

Special classification provisions

9902Heading

2-{[2,4,8,10-Tetrakis(2-methyl-2-propanyl)diben- zo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy}-N,N-bis(2-{[2,4,8,10-tetra- kis(2-methyl-2-propanyl)dibenzo[d,f][1,3,2]dioxaphos- phepin-6-yl]oxy}ethyl)ethanamine (CAS No. 80410-33-9) (provided for in subheading 2922.19.60)

990203Subheading

2-{[2,4,8,10-Tetrakis(2-methyl-2-propanyl)diben- zo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy}-N,N-bis(2-{[2,4,8,10-tetra- kis(2-methyl-2-propanyl)dibenzo[d,f][1,3,2]dioxaphos- phepin-6-yl]oxy}ethyl)ethanamine (CAS No. 80410-33-9) (provided for in subheading 2922.19.60)

Short answer

What HS code 990203 means before paying a 1688 supplier

HS code 990203 is the 6-digit HS 2022 starting point for 2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl…; often searched as antioxidant, phosphite stabilizer, polymer additive. Before using it in a landed-cost estimate, confirm the product material, function, destination market, and the official tariff source. Treat any 1688 supplier code as a clue, not the final import classification.

Use

Start with this 6-digit HS code and compare the product's material, function, and use.

Verify

Check the destination market's official HTS, TARIC, commodity-code, duty, VAT, or GST source.

Decide

If classification, documents, or restricted-product risk is unclear, submit the product for a written check.

Covered products

What products fall under HS code 990203?

Buyers sourcing 2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl)diben-… from 1688 commonly describe it in these ways. If your product matches, 990203 is likely the right 6-digit starting point — confirm material and intended use against the official tariff.

antioxidantphosphite stabilizerpolymer additivechemical stabilizer

US import duty · China origin

US import duty for HS 990203

Published USITC HTS rates for 2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl)diben-… (990203), aggregated at the 6-digit level. A research estimate — the final rate depends on your full 8-10 digit HTS line.

Base MFN rate

0.5%

Average across 99 US national tariff lines under 990203.

Section 301 (China)

—

No 301 surcharge in our current data — some lines may still be covered; verify on USITC.

Effective China-origin

≈0.5%

Base rate with applicable 301 surcharges — before MPF/HMF and any trade-action changes.

Source: USITC HTS (base MFN) + Section 301 overlay · data as of 2026-07-05 · rates change with trade actions — always confirm your full 10-digit line on hts.usitc.gov before pricing a product. Other markets (EU/UK/CA/AU/SG) below.

Import duty by market

Where to check the import duty for HS 990203

The 6-digit code is universal, but duty, VAT and GST are set by the destination country and depend on the full national tariff line with China as the country of origin. Start from the official source for your market.

United States

USITC / CBP · Harmonized Tariff Schedule (HTS)

European Union

TARIC · Access2Markets

United Kingdom

HMRC · UK Integrated Online Tariff

Canada

CBSA · Canadian Customs Tariff

Australia

ABF · Australian customs tariff

Singapore

Singapore Customs · Singapore Trade Classification (HS)

Compare China-origin duty evidence across supported markets

Use the HS & import duty checker to estimate duty + VAT/GST for 990203 by destination before you pay a 1688 supplier.

Open duty checkerEstimate landed cost

Heading 9902

Other HS codes under 9902

Subheadings in the same 4-digit heading — "2-{[2,4,8,10-Tetrakis(2-methyl-2-propanyl)diben- zo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy}-N,N-bis(2-{[2,4,8,10-tetra- kis(2-methyl-2-propanyl)dibenzo[d,f][1,3,2]dioxaphos- phepin-6-yl]oxy}ethyl)ethanamine (CAS No. 80410-33-9) (provided for in subheading 2922.19.60)". If 990203 is not an exact match, one of these may classify your product more precisely.

990201Entirely spherical silicon dioxide micro-spheres, certified by the importer as having mean particle size of 3 to 18 micrometers (µm), linseed oil absorption 150 to 400 ml/g, microbial count less than 100 cfu/g, mold count less than 100 cfu/g, heavy metals less than 20 ppm, surface area 300 to 800 m²/g and pore volume of 0.8 to 2.5 ml/g (CAS No. 7631-86-9) (provided for in subheading 2811.22.10)990202Leucoquinizarin as 1,4,9,10-tetrahydroxyanthracene (CAS No. 476-60-8), 2,3-dihydro-9,10-dihydroxyanthracene-1,4-dione (CAS No. 17648-03-2) or 2,3-dihydro-1,4-dihydroxy-9,10-anthracenedione (CAS No. 40498-13-3) (provided for in subheading 2907.29.90 or 2914.69.90)990204(S)-Cyano-(3-phenoxyphenyl)methyl (+)cis-3-(2,2 -dichloroetheny1)-2,2-dimethylcyclopropanecarboxylate and (S)-cyano-(3-phenoxyphenyl)methyl (+)trans-3-(2,2-dichloroetheny1)-2,2-dimethylcyclopropanecar- boxylate (Zeta-cypermethrin) (CAS No. 1315501-18-8) (provided for in subheading 2926.90.30)990205(5-chloro-2-methoxy-4-methyl-3-pyridyl)(4,5,6-trimethoxy-o- tolyl)methanone (Pyriofenone) (CAS No. 688046-61-9) (provided for in subheading 2933.39.21) and any formulations containing such compound (provided for in subheading 3808.92.15)990206Methyl {(2S,3R)-1-[(2S)-2-{5-[(2R,5R)-1-{3,5-difluoro- 4-[4-(4-fluorophenyl)-1-piperidinyl]phenyl}-5-(6- fluoro-2-{(2S)-1-[N-(methoxycarbonyl)-O-methyl-L-threonyl]- 2-pyrrolidinyl}-1H-benzimidazol-5-yl)- 2-pyrrolidinyl]-6-fluoro-1H-benzimidazol-2-yl}-1- pyrrolidinyl]-3-methoxy-1-oxo-2-butanyl}carbamate (Pibrentasvir) (CAS No. 1353900-92-1) (provided for in subheading 2933.39.41)990207Mixtures of Solvent Yellow 163 (8-Bis(phenylsulfanyl)-9,10- anthraquinone) (CAS No. 13676-91-0); Disperse Blue 56 (1,5-Diamino-2-bromo-4,8-dihy- droxy-9,10-anthraquinone) (CAS No. 68134-65-6); Disperse Red 167:1 ({3-(acetylamino)-4-[(2-chloro-4-nitrophenyl)azo]phe- nyl}imino)diethane-2,1-diyl diacetate) (CAS No. 1533-78-4); Disperse Orange 29 (4-({2-Methoxy-4-[(4-nitrophenyl)di- azenyl]phenyl}dia-zenyl)phenol) (CAS No. 19800-42-1); Disperse Red 1042A (5-[2-(2-Cyano-4-nitrophenyl)diazenyl]-2- [[2- (2-hydroxyethoxy)ethyl]amino]-4-methyl-6-(phenylamino)-3- pyridinecarbonitrile) (CAS No. 149988-44-3); Disperse Red 1042B (5-[(2-cyano-4-nitrophenyl)diazenyl]-6-[[2-(2-hydroxy- ethoxy)ethyl]amino]-4-methyl-2-(phenylamino)-3-pyridine carbonitrile) (CAS No. 137428-29-6); Disperse Blue 60 M (4,11-diamino-2-(3-methoxypropyl)-1H-naph- tho[2,3-f]iso- indole-1,3,5,10(2H)-tetrone) (CAS No. 12217-80-0); and Disperse Blue 60 ME (4,11-Diamino-2-[3-(2-methoxyethoxy)pro- pyl]-1H- naphtho[2,3-f]isoindole-1,3,5,10(2H)-tetrone) (CAS No. 65059-45-2) (provided for in subheading 3204.11.35)990208Mixtures of Disperse Yellow 163 (3,3'-({4-[(2,6-dichloro-4-nitrophenyl)diazenyl] phenyl} imino) dipropanenitrile) (CAS No. 67923-43-7); Disperse Red 167:1 ({3-(acetylamino)-4-[(2-chloro-4-nitrophenyl)azo]phenyl}imino) diethane-2,1-diyl diacetate) (CAS No. 1533-78-4); Disperse red 60 (1-amino-4-hydroxy-2-phenoxy-9,10-anthracenedione) (CAS No. 17418-58-5); Disperse Blue 77 (1-anilino-4,5-dihydroxy-8-nitro-9,10-anthraquinone) (CAS No. 20241-76-3); Disperse Blue 56 (1,5-diamino-2-bromo-4,8-dihydroxy-9,10-anthraquinone) (CAS No. 68134-65-6); Disperse Blue 214 E (4,8-diamino-2-(4-ethoxyphenyl)-1,5-dihydroxy-9,10-anthraquinone) (CAS No. 15114-15-5); and Disperse Blue 214 EE (4,8-diamino-2-[4-(2-ethoxyethoxy) phenyl]-1,5-dihydroxy-9,10-anthraquinone) (CAS No. 23119-35-9) (provided for in subheading 3204.11.35)990209Mixtures of 1-butanol (CAS No. 71-36-3); 1-propoxy-2-propanol (mixed isomers) (CAS No. 1569-01-3); siloxanes and silicones, dimethyl, 3-hydroxypropyl methyl, ethoxylated propoxylated (CAS No. 68937-55-3); 2-methyloxirane, oxirane, 3-prop-2-enoxyprop-1-ene (CAS No. 9041-33-2); urea, polymer with formaldehyde, methylated (CAS No. 68071-45-4); 2-propanol (CAS No. 67-63-0); 2-amino-2-methyl-1-propanol (CAS No. 124-68-5); 2-methyl-2-(methylamino)-1-propanol (CAS No. 27646-80-6); methanol (CAS No. 67-56-1) and water (CAS No. 7732-18-5) (provided for in subheading 3402.19.50)990210Siloxanes and silicones, di-Me, polymers with Me silsesquioxanes and polypropylene glycol mono-Bu ether (CAS No. 68554-65-4), greater than 70 percent by weight, with less than 8 percent percent by weight siloxanes and silicones, di-Me, polymers with Me silsesquioxanes and polyethylene-polypropylene glycol mono-Bu ether, less than 8 percent by weight poly(oxy(methyl-1,2-ethanediyl)), α-butyl-ω hydroxyl (CAS No. 9003-13-8), less than 2 percent by weight oxirane, methyl-, polymer with oxirane, monobutylether (CAS No. 9038-95-3), less than 8 percent by weight silanamine, 1,1,1, trimethyl (CAS No. 68909-20-6) and less than 1 percent by weight silicon dioxide (CAS No. 7631-86-9) (provided for in subheading 3824.99.92)990211Plug-type closures of polyethylene, suitable for use in capping specimen tubes and measuring 15 mm in length; each closure having an upper portion designed to extend beyond the specimen tube to permit holding of the closure, such upper portion having a diameter of 15.5 mm and thickness of 3.3 mm and having a notched groove; with the bottom portion of such closure designed for insertion into a specimen tube having a diameter measuring approximately 11.7 mm; the foregoing closures certified by the importer as for use in an automated insertion system (provided for in subheading 3923.50.00)990212Plaiting materials and products of plaiting materials, of wood, suitable for use in window shades, presented in rolls each having an area measuring over 27.85 m2 but less than 46.46 m2, containing any combination of wood slats each measuring 6 mm or more but not over 8 mm in width or 22 mm or more but not over 25 mm in width and measuring 1 mm or more but not over 2 mm in thickness, bamboo reeds measuring 1 mm or more but not over 2.5 mm in width, marupa wood rods measuring 1.5 mm or more but not over 3 mm in diameter and/or paper rope, the foregoing woven with yarns of polyester into a repeating pattern, whether or not such pattern also contains jute or paper (provided for in subheading 4601.94.20)990213Footwear for men, with outer soles and uppers of rubber or plastics (except vulcanized footwear and footwear with waterproof molded or vulcanized bottoms, including bottoms comprising an outer sole and all or part of the upper, and except footwear designed to be protective that is incomplete in its condition as imported), valued over $25/pair, whose height from the bottom of the outer sole to the top of the upper does not exceed 25.4 cm, designed to be worn in lieu of, but not over, other footwear as a protection against water, oil, grease or chemicals or cold or inclement weather where such protection includes protection against water that is imparted by the use of a laminated, but not coated, textile fabric; such footwear, if valued over $27, without openings in the bottom and/or side of the sole or covered opening in the upper designed to permit moisture vapor transport from under the foot (provided for in subheading 6402.91.50)

Questions

HS code 990203: common questions

What is the US import duty for HS code 990203 from China?

As published in the USITC HTS (data as of 2026-07-05), the base MFN rate for 990203 averages about 0.5% (averaged across 99 national tariff lines). This is a research estimate — the final rate depends on your full 8-10 digit HTS line; verify on hts.usitc.gov.

What is HS code 990203?

HS code 990203 is the World Customs Organization 6-digit HS 2022 subheading for "2-{[2,4,8,10-Tetrakis(2-methyl-2-propanyl)diben- zo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy}-N,N-bis(2-{[2,4,8,10-tetra- kis(2-methyl-2-propanyl)dibenzo[d,f][1,3,2]dioxaphos- phepin-6-yl]oxy}ethyl)ethanamine (CAS No. 80410-33-9) (provided for in subheading 2922.19.60)". The first two digits (99) are the chapter — Special classification provisions — and digits 3-4 (9902) are the heading. Countries add further digits (8-10) for their national tariff line.

What products fall under HS 990203?

Common products classified under 990203 include antioxidant, phosphite stabilizer, polymer additive, chemical stabilizer and similar items matching 2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl)diben-…. The correct code still depends on the product's material, function and intended use.

How do I find the import duty for HS code 990203?

Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.

Is HS code 990203 the same in every country?

The first 6 digits (990203) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.

Can I trust the HS code a 1688 supplier gives me?

Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.

Is HSN code 990203 the same as HS code 990203?

Yes at the 6-digit level. India's HSN (Harmonized System of Nomenclature) uses the same WCO base, so HSN 990203 covers the same "2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl)diben-…" scope; India then extends it to 8 digits for GST and customs. Check the Indian Customs tariff (CBIC) for the full national line.

Chapter 99

Explore Special classification provisions

990100Ethyl alcohol (provided for in subheadings 2207.10.60 and 2207.20) or any mixture containing such ethyl alcohol (provided for in heading 2710 or 3824) if such ethyl alcohol or mixture is to be used as a fuel or in producing a mixture of gasoline and alcohol, a mixture of a special fuel and alcohol, or any other mixture to be used as fuel (including motor fuel provided for in subheading 2710.12.15, 2710.19.16, 2710.19.24 or 2710.20.15), or is suitable for any such uses990301Articles of iron or steel; derivative articles of iron or steel; articles of aluminum; wood products; derivative articles of aluminum; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans); light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; semiconductor articles; semi-finished copper; and intensive copper derivative products, of India, as provided in subdivisions (z)(iii) through (z)(xiii) of U.S. note 2 to this subchapter [Compiler's note: provision terminated as of February 7, 2026.]990402Sheep meat, provided for in subheadings 0204.21.00, 0204.22.40, 0204.23.40, 0204.41.00, 0204.42.40 or 0204.43.40, if entered during the effective period of safeguards based upon quantity announced by the Secretary of Agriculture990804Provided for in subheading 0406.10.08, 0406.10.18, 0406.10.28, 0406.10.38, 0406.10.48, 0406.10.58, 0406.10.68, 0406.10.78, 0406.10.88, 0406.20.28, 0406.20.33, 0406.20.39, 0406.20.48, 0406.20.53, 0406.20.63, 0406.20.67, 0406.20.71, 0406.20.75, 0406.20.79, 0406.20.83, 0406.20.87, 0406.20.91, 0406.30.18, 0406.30.28, 0406.30.38, 0406.30.48, 0406.30.53, 0406.30.63, 0406.30.67, 0406.30.71, 0406.30.75, 0406.30.79, 0406.30.83, 0406.30.87, 0406.30.91, 0406.40.70, 0406.90.12, 0406.90.18, 0406.90.32, 0406.90.37, 0406.90.42, 0406.90.48, 0406.90.54, 0406.90.68, 0406.90.74, 0406.90.78, 0406.90.84, 0406.90.88, 0406.90.92, 0406.90.94, 0406.90.97 or 1901.90.36 and subject to the quantitative limits specified in U.S. note 5 to this subchapter991502Subject to the quantitative limits specified in U.S. note 4 to this subchapter991704Goods provided for in subheading 0406.10.58, 0406.20.53, 0406.20.79, 0406.30.79, 0406.90.32, 0406.90.37, 0406.90.42 or 0406.90.68991802Subject to the quantitative limits specified in U.S. note 3(a) to this subchapter991902Subject to the quantitative limits specified in U.S. note 3 to this subchapter

Sourcing 2-{[2,4,8,10-tetrakis(2-methyl-2-propanyl)diben-… from 1688?

Get a written pre-payment check — classification clues, China-origin landed cost, and supplier risk — before you commit. 5,754 HS codes covered.

Submit for reviewBack to duty checker