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§ HTS 2931.90.10.00 · US import duty

4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester

Chapter
29
MFN base rate
6.5%
Active overlays
0
Scope
MFN base only

AD/CVD not evaluated. CBP determines binding classification at entry. Methodology →

Other organo-inorganic compounds: · Other: · 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
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HTS CODE
2931.90.10.00
General (MFN)6.5%
SpecialFree (A+, AU, …
Other (Column 2)15.4¢/kg + 40%
§99 overlays0

Base tariff columnsBase tariff columns

Column rates from the USITC HTS export. The column that applies depends on origin and trade-program eligibility.

General (MFN)6.5%
SpecialFree (A+, AU, BH, CL,CO,D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Other (Column 2)15.4¢/kg + 40%
Unitskg

Official source: USITC Harmonized Tariff Schedule. Duty at entry is determined by US Customs and Border Protection (CBP). AD/CVD and product-specific exclusions are not evaluated by default.

Chapter 99 overlaysChapter 99 overlays

No Chapter 99 overlays are currently linked to this HS code.

§ AD/CVD WATCHAD/CVD orders that may apply

These antidumping or countervailing duty orders mention this HTS in their Federal Register notices. The written scope of the order — not the HTS — is dispositive. Verify the actual scope at trade.gov before assuming an order applies to your shipment.

  • A-570-045 AD China (CN) Order 2024-12-19
    1-Hydroxyethylidene-1, 1-Diphosphonic Acid From the People's Republic of China: Initiation of Circumvention Inquiry of the Antidumping and Countervailing Duty Orders
    View order →
  • C-570-046 CVD China (CN) Order 2024-12-19
    1-Hydroxyethylidene-1, 1-Diphosphonic Acid From the People's Republic of China: Initiation of Circumvention Inquiry of the Antidumping and Countervailing Duty Orders
    View order →

§ DUTY BREAKDOWNDuty breakdown

Duty ledger below is calculated on a $10,000 customs value. Fees, AD/CVD, and exclusions are not included here.

China (CN)
Total 6.5% · $650.00
Duty breakdown Rate Amount Source
Base dutyBase 6.5% $650.00 HTS General rate
Status: exact Methodology: tariff-ledger-v1 Data: d4c9e6f79bac8e84

§ CLASSIFICATION WATCH-OUTSClassification watch-outs

These sibling HTS entries share the same parent but differ in duty rate or Chapter 99 coverage. They are review prompts, not classification recommendations.

  • 2931.90.05.00
    Diphenyldichlorosilane; and phenyltrichlorosilane
    Base rate: Free Chapter 99: 0 Base rate differs from selected HTS
  • 2931.90.15.00
    Sodium tetraphenylboron
    Base rate: 5.8% Chapter 99: 0 Base rate differs from selected HTS
  • 2931.90.70.00
    N,N'-Bis(trimethylsilyl) urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts
    Base rate: Free Chapter 99: 1 Base rate differs from selected HTSChapter 99 coverage differs
  • 2931.90.90
    Other
    Base rate: 3.7% Chapter 99: 2 Base rate differs from selected HTSChapter 99 coverage differs

Sample duty by originSample duty by origin

Illustrative calculation at USD 10,000 customs value, standard (non-preferential) claim. Chapter 99 additional duties applied where status is active.

Origin Base rate Chapter 99 Total rate Duty (USD)
China (CN) 6.5% 0% 6.5% $650.00
Vietnam (VN) 6.5% 0% 6.5% $650.00
Mexico (MX) 6.5% 0% 6.5% $650.00
India (IN) 6.5% 0% 6.5% $650.00
South Korea (KR) 6.5% 0% 6.5% $650.00

§ RELATED ENTRIESRelated HS codes in the same chapter

Adjacent lines under the same HTS chapter. Pick the most specific match for your product.

§ RECENT CHANGESRecent US tariff policy notices

The 3 most recent Federal Register tariff notices in the Duty database. See the Changes timeline for the full list.

See all Federal Register actions →