Pharmaceutical Grade Sodium Sulfite USP
USP-compliant sodium sulfite powder for use as an excipient in injectable drugs and antioxidants in pharmaceuticals. It is a chemically defined sodium sulfite under HTS 2832.10.00.00 in Chapter 28.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-mixed into medicated preparations
Pharmaceutical preparations containing sulfites are classified by therapeutic use in Chapter 30.
If for diagnostic reagents incorporating sodium sulfite
Lab reagents with specific functions fall under 3822, not pure chemicals.
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Import Tips & Compliance
• Secure US FDA Drug Master File and DMF letter; test for endotoxin levels per USP <85>
• Common issue: improper GMP certification delays clearance
Related Products under HTS 2832.10.00.00
Sodium Sulfite Anhydrous Powder
Pure anhydrous sodium sulfite (Na2SO3) in fine powder form, used primarily as a reducing agent and antioxidant in chemical manufacturing. It falls under HTS 2832.10.00.00 as a sodium sulfite, a simple inorganic salt of sulfurous acid classified in Chapter 28 for chemically defined inorganic compounds.
Food-Grade Sodium Sulfite Crystals
Crystalline sodium sulfite meeting FCC standards for use as a preservative in dried fruits, wines, and seafood. Classified under HTS 2832.10.00.00 as sodium sulfites, explicitly covered in the sulfites subheading of Chapter 28.
Technical Grade Sodium Sulfite Solution 40%
Aqueous solution containing 40% sodium sulfite by weight, used in water treatment and paper pulping as an oxygen scavenger. It qualifies for HTS 2832.10.00.00 as chemically defined sodium sulfites, regardless of aqueous form.
Sodium Sulfite Meta Bisulfite Precursor
High-purity sodium sulfite granules serving as a precursor for sodium metabisulfite production in food and pharma. Falls under HTS 2832.10.00.00 due to its chemical definition as Na2SO3 in Chapter 28.
Industrial Sodium Sulfite Flakes
Flaked sodium sulfite for large-scale use in textile bleaching and photography developers as a reducing agent. Classified in HTS 2832.10.00.00 as a sodium sulfite per the sulfites; thiosulfates heading.
Sodium Sulfite for Wine Preservation
Granular sodium sulfite specifically for winemaking to prevent oxidation and microbial growth. Covered by HTS 2832.10.00.00 as a sodium sulfite, a standard inorganic compound in this chapter.