2530.90.10.00
Natural cryolite; natural chiolite
Classification path
- Mineral substances not elsewhere specified or included
- Other
- Natural cryolite; natural chiolite
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- Free
- Unit of quantity
- t
Related lines in heading 2530
- 2530.10.00.00Vermiculite, perlite and chlorites, unexpandedFree
- 2530.20.10.00Kieserite, epsom salts (natural magnesium sulfates) / KieseriteFree
- 2530.20.20.00Kieserite, epsom salts (natural magnesium sulfates) / Epsom saltsFree
- 2530.90.20.00Mineral substances not elsewhere specified or included / Natural micaceous iron oxides2.9%
- 2530.90.80.10Mineral substances not elsewhere specified or included / CelestiteFree
- 2530.90.80.15Mineral substances not elsewhere specified or included / Earth colorsFree
- 2530.90.80.50Mineral substances not elsewhere specified or included / OtherFree
About heading 2530
Mineral substances not elsewhere specified or included
Heading 2530 covers mineral substances that are not specified or included in any other heading, so it works as a residual heading for non-metallic minerals. It is split into three groups: vermiculite, perlite and chlorites (unexpanded); natural magnesium sulfates, meaning kieserite and epsom salts; and a residual other group for cryolite, chiolite, micaceous iron oxides, celestite and earth colors. Most lines in the heading carry a free general (MFN) rate, with natural micaceous iron oxides as the exception.
Full guide to heading 2530Products in this heading
- Unexpanded vermiculite
- Unexpanded perlite
- Natural kieserite
- Natural epsom salts (natural magnesium sulfate)
- Natural cryolite
- Natural micaceous iron oxides
- Celestite
- Earth colors
Frequently asked questions
What is the HTS code for unexpanded perlite?
Unexpanded perlite is classified under 2530.10.00.00, which covers vermiculite, perlite and chlorites, unexpanded. The general (MFN) rate for that line is Free.
What is the duty on natural micaceous iron oxides?
Natural micaceous iron oxides fall under 2530.90.20.00. The general (MFN) rate for that line is 2.9%.
How do I classify natural epsom salts?
Natural epsom salts (natural magnesium sulfates) are classified under 2530.20.20.00, separate from kieserite under 2530.20.10.00. Both lines carry a general (MFN) rate of Free.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.