Glyoxal Anhydrous Crystals
Anhydrous glyoxal in crystalline form (hydrate-free) for specialty polymer synthesis. Pure CHOCHO classified specifically under HTS 2912.19.30.00 as acyclic aldehyde without other oxygen function. Rare form due to polymerization tendency during storage.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3.7% | +35.0% | 38.7% |
| 🇲🇽Mexico | 3.7% | +10.0% | 13.7% |
| 🇨🇦Canada | 3.7% | +10.0% | 13.7% |
| 🇩🇪Germany | 3.7% | +10.0% | 13.7% |
| 🇯🇵Japan | 3.7% | +10.0% | 13.7% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If methanol-derived rather than standard synthesis
Methanol-derived aldehydes have separate statistical breakout within same heading.
If monofunctional aldehyde impurity predominates
Pure monocarboxy aldehydes classify earlier in Chapter 29 numerical order.
If complexed with metal catalysts
Organo-metallic complexes may classify under Chapter 28 depending on metal-carbon bonding.
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Import Tips & Compliance
• Provide polymerization inhibitor analysis (<0.1%) to confirm anhydrous stability per Chapter 29 stabilizer provisions
• Declare crystal water content (<0.5%) via Karl Fischer titration to distinguish from aqueous solutions
• Special UN-approved packaging required for self-reactive substances
Related Products under HTS 2912.19.30.00
Glyoxal 40% Aqueous Solution
Glyoxal (CHOCHO) in 40% aqueous solution is a dialdehyde used primarily as a cross-linking agent in textile finishing and paper production. This acyclic aldehyde without other oxygen functions falls under HTS 2912.19.30.00 as it matches the specific subheading for glyoxal. It is supplied in this diluted form for safety during transport and handling.
Technical Grade Glyoxal 40% for Textile Crosslinking
Technical grade 40% glyoxal solution designed for crosslinking cellulose in textile wrinkle-resistant finishes. Classified under HTS 2912.19.30.00 as pure glyoxal meeting Chapter 29 criteria for acyclic aldehydes without other oxygen functions. Stabilizers present are solely for transport per chapter notes.
Pharmaceutical Grade Glyoxal USP/NF
Ultra-pure glyoxal meeting USP/NF standards for pharmaceutical intermediate synthesis and biocide formulations. Falls under HTS 2912.19.30.00 as chemically defined acyclic dialdehyde per Chapter 29 scope. Supplied at 40% concentration in water for safe handling.
Stabilized Glyoxal 40% with Anticaking Agent
Glyoxal 40% solution with approved anticaking agent for bulk paper mill storage. Additive complies with Chapter 29 note (f) as necessary for preservation/transport only. Specific HTS 2912.19.30.00 classification for chemically defined glyoxal.
Glyoxal for Leather Tanning Intermediate
High-purity glyoxal used as crosslinking agent in synthetic leather tanning formulations. Chemically defined acyclic dialdehyde qualifies for HTS 2912.19.30.00 per Chapter 29 scope. Supplied as 40% solution to prevent polymerization.
Biocide Grade Glyoxal 40% Solution
Glyoxal solution meeting EPA biocide standards for industrial water treatment and disinfectant formulations. Pure acyclic dialdehyde under HTS 2912.19.30.00; excludes formulated end-products per Chapter notes. 40% concentration standard for microbial control applications.