7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid monohydrate
7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid monohydrate is the hydrated crystalline form of this heterocyclic compound. The water of crystallization is considered an impurity under Chapter Note 1(a), and the product remains a separate chemically defined organic compound. It is classified under tariff item 2934.99.00 as an 'other heterocyclic compound'.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
PGA flags (5)Show detailsHide detailsCFIAAll ProgramsMay be requiredHCActive Pharmaceutical IngredientsMay be requiredHCHuman DrugsMay be requiredHCMedical DevicesMay be requiredHCPesticides (Pest Management Regulatory AgencyMay be required
- CFIA
All Programs · May be required · on some HTS numbers under this code
May require CFIA All Programs depending on the full 10-digit classification number (only some numbers under this code are listed). Matching criteria: Equal To 2934990010. Logic: MATCH IF (Valid HS Code).
- HC
Active Pharmaceutical Ingredients · May be required
May require HC Active Pharmaceutical Ingredients depending on intended use (HC13) and Canadian product category (HC01). Matching criteria: Starts With 2934. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
- HC
Human Drugs · May be required
May require HC Human Drugs depending on intended use (HC01, HC02, HC05, HC07, HC29, HC31) and Canadian product category (HC05, HC06, HC07, HC08, HC09, HC10). Matching criteria: Starts With 2934. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
- HC
Medical Devices · May be required
May require HC Medical Devices depending on intended use (HC01, HC02, HC03, HC04, HC07, HC29, HC30) and Canadian product category (HC11, HC12, HC13, HC14). Matching criteria: Starts With 293499. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
- HC
Pesticides (Pest Management Regulatory Agency · May be required · on some HTS numbers under this code
May require HC Pesticides (Pest Management Regulatory Agency depending on intended use (HC06, HC07, HC08, HC09) and Canadian product category (HC38, HC39), and on the full 10-digit classification number (only some numbers under this code are listed). Matching criteria: Equal To 2934990090. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is considered an inorganic salt
Inorganic salts of organic compounds are classified with the organic compound, not in Chapter 28.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the water content as water of crystallization, not as a solvent addition
• Provide the molecular formula including the water molecule to the CBSA
• If the monohydrate form is used for enhanced handling stability, no special documentation is required beyond the certificate of analysis
Related Products under Tariff item 2934.99.00
1,2-Benzisothiazolin-3-one (BIT)
1,2-Benzisothiazolin-3-one (BIT) is a heterocyclic organic compound featuring a benzisothiazole ring. It is classified under tariff item 2934.99.00 as an aromatic heterocyclic compound. It is primarily used as a broad-spectrum preservative in industrial applications.
1,9-Thianthrenedicarboxylic acid
1,9-Thianthrenedicarboxylic acid, a polycyclic aromatic heterocyclic compound with sulfur bridges. This chemically defined compound is used in specialty chemical synthesis and materials science.
2,5-Diphenyloxazole NMR Standard
2,5-Diphenyloxazole NMR Standard is a certified reference material of 98% purity with a NIST-traceable NMR spectrum. It is an aromatic heterocyclic compound containing an oxazole ring, classified under tariff item 2934.99.00. It is used for calibrating 1H and 13C NMR spectrometers in pharmaceutical quality control laboratories.
2,5-Diphenyloxazole (PPO)
2,5-Diphenyloxazole (PPO) is a fluorescent organic compound containing an oxazole ring with phenyl substituents. It is a heterocyclic compound classified under tariff item 2934.99.00. It is primarily used as a primary scintillator in liquid scintillation counting.
2,5-Diphenyloxazole Scintillation Grade
2,5-Diphenyloxazole Scintillation Grade is a high-purity form of PPO refined for nuclear spectroscopy applications. It is an aromatic oxazole derivative classified under tariff item 2934.99.00. It exhibits optimal fluorescence quantum yield when dissolved in aromatic solvents for scintillation counting.
2-Acetylbenzo(b)thiophene
2-Acetylbenzo(b)thiophene, a specific aromatic heterocyclic compound with a thiophene ring fused to benzene. This chemically defined compound is used as an intermediate in pharmaceutical synthesis.