HTSUS Chapter 29 on the customs broker exam

Chapter 29 of the Harmonized Tariff Schedule covers Organic chemicals. Across the released customs broker exams, 4 questions turn on classifying goods in this chapter. Drawn from 4 released sittings, April 2018 through October 2021. Below: every heading CBP has tested, the official heading text, and each exam question that used it.

2923 — Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined

What is the CLASSIFICATION for choline and its salts?
April 2022 exam, question 43 · tests 2923.10.0000. Full question, answer and citation →
What is the CLASSIFICATION for Choline and its salts?
October 2020 (AM) exam, question 43 · tests 2923.10.0000. Full question, answer and citation →

2922 — Oxygen-function amino-compounds

What is the CLASSIFICATION and DUTY RATE of D-Aspartic acid (CAS #1783-96-6)? D-Aspartic acid is an amino acid used as a pharmaceutical intermediate. (Note: Prefixes such as D, I, L, S, O, M, P, etc., refer to various isomeric differences in chemical products.)
October 2021 exam, question 46 · tests 2922.49.4950. Full question, answer and citation →

2938 — Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives

The chemical Rutoside will be imported into the U.S. from Germany in powder form, packed in drums. The tariff number is 2938.10.00.00, which qualifies for use of the Special Program Indicator (SPI) K. What other reference must comply to provide for a free rate of duty?
April 2018 exam, question 64 · tests 2938.10.0000. Full question, answer and citation →

Practise classifying Chapter 29 the way the exam asks it.

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