Chapter 29 · Organic chemicals · Section 6
HS Code 2921.51
o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof
Heading 2921: Amine-function compounds
US HTS + UK Tariff v4.0.1633 · updated 2026-10-21 · sources
Rates on this page are the official published schedule rates, shown for information. This is not a customs ruling: preference programs, Section 232/301 surcharges and per-shipment fees can change what you actually pay.
United States - HTS lines under 2921.51
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 2921.51.10 |
o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof > 4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate |
6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 48.5% | kg |
| 2921.51.20 |
o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof > Other > Photographic chemicals |
6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 50% | kg |
| 2921.51.30 |
Other > Other > Products described in additional U.S. note 3 to section VI |
6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 60% | kg |
| 2921.51.50 |
Other > Other > Other |
6.5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG) | 15.4¢/kg + 60% | kg |
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Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 2921.51
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 2921 51 19 | Other | EU duty (TARIC) → |
| 2921 51 90 | Other | EU duty (TARIC) → |
| 2921 51 11 | m-Phenylenediamine, of a purity by weight of 99 % or more and containing: – 1 % or less by weight of water, – 200 mg/kg or less of o-phenylenediamine, – 450 mg/kg or less of p-phenylenediamine | EU duty (TARIC) → |
| 2921 51 00 | o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof | EU duty (TARIC) → |
United Kingdom - commodity codes under 2921.51
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 2921 51 00 00 | o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof | UK duty & VAT → |
| 2921 51 11 00 | m-Phenylenediamine, of a purity by weight of 99 % or more and containing:<br><br><br>- 1 % or less by weight of water,<br><br><br>- 200 mg/kg or less of o-phenylenediamine and<br><br><br>- 450 mg/kg or less of p-phenylenediamine | UK duty & VAT → |
| 2921 51 19 00 | Other | UK duty & VAT → |
| 2921 51 19 10 | o-Phenylenediamine (CAS RN 95-54-5) | UK duty & VAT → |
| 2921 51 19 30 | 2-Methyl-p-phenylenediamine sulphate (CAS RN 615-50-9) | UK duty & VAT → |
| 2921 51 19 40 | p-Phenylenediamine (CAS RN 106-50-3) | UK duty & VAT → |
| 2921 51 19 50 | 2-Chloro-1,4-phenylendiamine (CAS RN 615-66-7) or 2,5-dichloro-1,4-phenylendiamine (CAS RN 20103-09-7) | UK duty & VAT → |
| 2921 51 19 90 | Other | UK duty & VAT → |
| 2921 51 90 00 | Other | UK duty & VAT → |
Nearby codes in heading 2921
The subheadings immediately before and after 2921.51 in chapter 29.
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.
Frequently asked questions
Common questions about HS code 2921.51.
What is HS code 2921.51?
HS code 2921.51 covers: o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof. It belongs to chapter 29 (Organic chemicals) of the Harmonized System.
What is the US import duty for HS code 2921.51?
The US general (normal trade relations) rates under this subheading range: 6.5%. Preference programs and Section 232/301 surcharges can change the effective rate; see the HTS lines for detail.
What is the UK commodity code for 2921.51?
The UK extends 2921.51 to 9 declarable 10-digit commodity codes, starting with 2921510000. The full code goes on the UK customs declaration.