Analysis
HTS 3707.90.31 covers chemical preparations for photographic uses: acid violet 19 under heading 3707 (chemical preparations for photographic uses (other than varnishes, glues, adhesives and…).
The normal trade relations rate here is zero, shared by about 35% of the 37 tariff lines in chapter 37, a useful check when a neighbouring dutiable line is a candidate. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
The other lines in the same group are 3707.90.32 (chemical preparations for photographic uses: other, duty-free) and 3707.90.60 (unmixed products for photographic uses, put up in measured…, duty-free).
Census statistics map these goods to NAICS 325992 (Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing), an industry of 132 US establishments employing 6,258 people. That concordance is how imports of this line are compared with US output.
All 2 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3707.90.32 | Chemical preparations for photographic uses: other | Free |
| 3707.90.60 | Unmixed products for photographic uses, put up in measured portions or put up for retail sale in a form ready for use | Free |