Product classification
HS code for Specialty adhesive: 3506.99
Glues and other adhesives, prepared, n.e.c. in heading no. 3506, not exceeding a net weight of 1kg.
Classification of specialty adhesive under HS 3506.99
Specialty adhesives are classified under HS code 3506.99 when they are prepared glues or other prepared adhesives not elsewhere specified. Heading 3506 covers products suitable for use as glues or adhesives, put up for retail sale as such and not exceeding a net weight of 1 kg, or other prepared adhesives. Subheading 3506.99 is the residual category for these products. Classification here is driven by the chemical composition and the packaging of the product. If the adhesive is a complex mixture of polymers, resins, and solvents designed for specific industrial applications—and it does not fall under the specific descriptions of headings 3501 to 3505—it is placed here. The 'specialty' nature often refers to unique bonding properties, such as resistance to extreme temperatures or chemical exposure, which do not change the fundamental classification as a prepared adhesive under the 3506 heading. To correctly classify under 3506.99, one must ensure the product is a 'prepared' adhesive, meaning it is a mixture of components ready for use, and that it meets the weight requirements specified in the subheading description for that particular jurisdiction.
- Covers
- Industrial strength epoxy resins
- Specialized UV-curable adhesives
- Anaerobic sealants and threadlockers
- Structural bonding agents for aerospace
- Cyanoacrylate adhesives in industrial packaging
- Heat-resistant silicone adhesives
- Also under 3506.99
- Elmer's (industrial bulk)
- Franklin International (Titebond industrial, non-wood specific)
- various generic industrial silicate glues
- specialized construction mastics
Codes often confused with 3506.99
Common mistake. Specialty adhesives are often misclassified under HS code 3506.10. Code 3506.10 is specifically for products put up for retail sale as glues or adhesives not exceeding 1 kg. If the product is for industrial use and not in retail packaging, 3506.99 is more appropriate. Another common error is classifying them under Chapter 39 (Plastics) under codes like 3907 or 3909. While adhesives often contain plastic resins, once they are 'prepared' as an adhesive mixture, they must be classified in Chapter 35.
Top exporters and importers of HS 350699 (the code used for specialty adhesive), 2025
In 2025, the largest exporter of HS 350699 (the code used for specialty adhesive) in UN Comtrade data was China, with 24% of world exports; the largest importer in UN Comtrade data was India, with 7.7% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 350699, not only specialty adhesive.
Top exporters 2025 · share of world exports
- 1 China $515M 24% of world exports
- 2 Netherlands $456M 21% of world exports
- 3 United States $167M 7.8% of world exports
World total: $2.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $171M 7.7% of world imports
- 2 China $158M 7.1% of world imports
- 3 Vietnam* ~$118M 5.3% of world imports · partner records ↗
World total: $2.2B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for specialty adhesive
Brazil classifies specialty adhesive under NCM 3506.99.00: HS 3506.99 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about specialty adhesive
What is the HS code for Specialty adhesive?
The HS code for Specialty adhesive is 350699 (Glues and other adhesives; prepared, n.e.c. in heading no. 3506, not exceeding a net weight of 1kg). The HS code for specialty prepared adhesives not elsewhere specified, particularly those in small net weights or specific industrial preparations, is 3506.99.
How do I classify Specialty adhesive for customs?
Specialty adhesive is classified under HS code 350699 — Glues and other adhesives; prepared, n.e.c. in heading no. 3506, not exceeding a net weight of 1kg. This is a 6-digit subheading level code.
Does this code include raw resins?
No, raw or primary form resins are classified in Chapter 39. HS code 3506.99 is strictly for 'prepared' adhesives that have been formulated with additives for use specifically as a bonding agent.
Which countries are the top exporters of specialty adhesive (HS 350699)?
In 2025, the top exporters of HS 350699 (the code used for specialty adhesive) in UN Comtrade data were China ($515M, 24% of world exports), the Netherlands ($456M) and the United States ($167M). World exports came to about $2.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of specialty adhesive (HS 350699)?
In 2025, the top importers of HS 350699 (the code used for specialty adhesive) in UN Comtrade data were India ($171M, 7.7% of world imports), China ($158M) and Vietnam (about $118M). World imports came to about $2.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Specialty adhesive the same in all countries?
The base HS code 350699 for Specialty adhesive is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for specialty adhesive in Brazil?
In Brazil, specialty adhesive (HS 350699) is classified under NCM 3506.99.00.