Heading 3824

Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included

48 declarable lines

Heading 3824 covers prepared binders for foundry molds or cores, plus chemical products and preparations of the chemical or allied industries that are not named in another heading. It is split first by specific product groups (binders, metal carbides, cement additives, mortars, sorbitol), then by goods listed in subheading note 3, and finally by residual chemical mixtures under 3824.99.

Products in this heading

Prepared binder for foundry sand molds or cores
Nonagglomerated metal carbide powder mixed with a metallic binder
Liquid additive for cement, mortar or concrete
Nonrefractory wet mortar or concrete mix
Sorbitol powder other than the sorbitol of heading 2905
Cultured crystals weighing 2.5 g or more, in ingots
Lithium nickel cobalt manganese oxide cathode powder
Electroless plating solution for printed circuit boards

How to choose the right subheading

Whether the product is named in another heading, such as 3816 for refractory mortars or 2905 for sorbitol of 2905.44
The stated use: foundry binder, cement or concrete additive, mortar or concrete, or general chemical preparation
Whether the goods fall in subheading note 3, which turns on content such as oxirane, PCBs, or short-chain chlorinated paraffins
For residual mixtures, whether they contain 5% or more by weight of aromatic or modified aromatic substances
Whether the mixture is of two or more inorganic compounds, of fatty substances, of halogenated hydrocarbons, or another type

Often confused with

Sorbitol of subheading 2905.44
Sorbitol classed in 2905.44 stays in heading 2905; 3824.60 covers only other sorbitol.
Heading 2905
Refractory cements, mortars and concretes
Refractory compositions are named in heading 3816, so 3824.50 covers only nonrefractory goods.
Heading 3816
Insecticides or disinfectants put up for retail sale
These are specifically provided for in heading 3808.
Heading 3808
Activated carbon
Activated carbon has its own heading and is not a residual 3824 product.
Heading 3802
Municipal waste and sewage sludge
Wastes specified in chapter 38 note 6 go to heading 3825.
Heading 3825

Frequently asked questions

What is the HTS code for prepared additives for cement or mortar?

Prepared additives consisting wholly of inorganic substances are 3824.40.20.00 at a general (MFN) rate of Free. Other prepared additives are 3824.40.50.00 at a general (MFN) rate of 5%, and those with 5% or more aromatic substances are 3824.40.10.00 at 6.5%.

What is the duty on nonrefractory mortar or concrete?

Wet nonrefractory mortars and concretes are 3824.50.00.10 at a general (MFN) rate of Free, and other nonrefractory mortars and concretes are 3824.50.00.50, also Free. Refractory compositions are not classified here.

How do I classify sorbitol?

Sorbitol other than that of subheading 2905.44 is 3824.60.00.00 at a general (MFN) rate of 4.9%. If the goods are the sorbitol of 2905.44, they are classified in heading 2905 instead.

Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.