Chapter 28 — Inorganic chemicals
U.S. customs duties, top product codes, and top source countries for HTS Chapter 28 imports, since January 2025.
Cumulative Customs Duties
Source: U.S. Census Bureau · Since January 2025$1.1B
Estimated customs duties on Chapter 28 imports since January 1, 2025, calculated from Census Bureau trade data.
Top HTS Codes by Duties
Cumulative since January 2025| HTS Code | Description | Duties |
|---|---|---|
| 2811.22.10.00 | Synthetic silica gel | $81M |
| 2814.10.00.00 | Anhydrous ammonia | $60M |
| 2804.69.10.00 | Containing by weight less than 99.99 percent but not less than 99 percent of silicon | $53M |
| 2842.10.00.00 | Double or complex silicates, including aluminosilicates whether or not chemically defined | $32M |
| 2818.30.00.00 | Aluminum hydroxide | $28M |
| 2811.22.50.00 | Other | $25M |
| 2835.26.00.00 | Other phosphates of calcium | $23M |
| 2803.00.00.10 | Carbon black | $21M |
| 2825.40.00.00 | Nickel oxides and hydroxides | $21M |
| 2841.80.00.10 | Of ammonium | $21M |
Top Source Countries by Duties
Cumulative since January 2025| Country | Duties |
|---|---|
| China | $501M |
| Germany | $81M |
| Brazil | $66M |
| Trinidad and Tobago | $52M |
| Japan | $40M |
| India | $39M |
| South Korea | $31M |
| Belgium | $18M |
| Türkiye | $17M |
| Taiwan | $16M |