Certified Reference Methylene Blue Analytical Standard
Certified reference material of Methylene Blue (3,7-Bis(dimethylamino) phenazathionium chloride) at 99.5%+ purity for analytical chemistry calibration. HTS 3204.13.45.00 covers this specifically named basic dye used as HPLC/UV standard. Traceable to NIST standards.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as multi-analyte calibration standard solution
Composite diagnostic or calibration standards classify under Chapter 38.
If for other certified basic dye reference materials
Different basic dyes have separate reference material subheadings.
If when packaged in retail quantities for general lab staining
Retail lab reagents including this dye shift to heading 3212.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include NIST traceability certificate and uncertainty measurements for reference material status
• Package in amber glass ampoules with inert atmosphere to maintain stability
• Declare as analytical standard rather than bulk chemical to facilitate laboratory import
Related Products under HTS 3204.13.45.00
Methylene Blue Powder USP Grade
High-purity 3,7-Bis(dimethylamino) phenazathionium chloride (Methylene blue) powder meeting USP standards for pharmaceutical applications. Classified under HTS 3204.13.45.00 as a specific basic dye, chemically defined synthetic organic coloring matter. Used primarily as a medication and diagnostic stain rather than a textile colorant.
Basic Blue 147 Dye for Textile Application
Synthetic basic dye Basic Blue 147, specifically named in HTS 3204.13.45.00, used for coloring acrylic and wool fibers. Provided as a water-soluble powder or solution for industrial dyeing processes. Meets chapter note 3 as chemically defined synthetic organic coloring matter.
Methylene Blue Aqueous Solution 1% for Microscopy
1% aqueous solution of Methylene Blue (3,7-Bis(dimethylamino) phenazathionium chloride) for biological staining in microscopy. Classified under HTS 3204.13.45.00 as the specifically named basic dye, even in dilute solution form. Excludes non-aqueous dispersions per chapter notes.
Pharmaceutical Grade Methylene Blue Crystals
Purified crystalline Methylene Blue (CAS 61-73-4) for compounding in pharmaceutical applications like antimalarial treatments. HTS 3204.13.45.00 specifically names this chemically defined basic dye. Distinguished from bulk preparations by high purity (>99%).
Basic Blue 147 Powder for Paper Dyeing
High-strength Basic Blue 147 powder specifically for surface coloring of paper and cardboard products. Named directly in HTS 3204.13.45.00 as synthetic organic basic dye. Provides brilliant blue shades with good light fastness on paper substrates.
Methylene Blue for Aquaculture Treatment
Methylene Blue solution or powder formulated for fish disease treatment in aquaculture. Classified under HTS 3204.13.45.00 as the named basic dye, provided for veterinary staining and therapeutic use. Purity suitable for aquatic organism treatment.