Sodium dichromate
Salts of oxometallic or peroxometallic acids. > Sodium dichromate > Sodium dichromate
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2841.30.00
Anhydrous Sodium Dichromate
> Anhydrous sodium dichromate (Na2Cr2O7) is the water-free crystalline form of sodium dichromate, highly soluble and used in organic synthesis and pigment manufacturing. As a separate chemically defined inorganic salt of an oxometallic acid, it falls squarely under tariff item 2841.30.00.
Laboratory Grade Sodium Dichromate
> Laboratory grade sodium dichromate with purity above 99.5% is a chemically defined inorganic salt of oxometallic acid, meeting the criteria of Chapter 28 Note 1. It is used in analytical chemistry and oxidation reactions and is correctly classified under tariff item 2841.30.00.
Purified Sodium Dichromate Crystals
> Purified sodium dichromate crystals with impurities below 0.1% are a chemically defined compound of Chapter 28, not excluded by the chapter notes. As a salt of an oxometallic acid, it is classified under tariff item 2841.30.00, even when intended for pharmaceutical precursor synthesis.
Sodium Dichromate Dihydrate
> Sodium dichromate dihydrate (Na2Cr2O7·2H2O) is a hydrated form of sodium dichromate, a bright orange crystalline powder used in chromium plating and leather tanning. Hydrates of inorganic salts are covered by Chapter 28 when they are separate chemically defined compounds, so this falls under tariff item 2841.30.00.
Sodium Dichromate Flakes
> Sodium dichromate in flake form is chemically identical to the powder but processed for easier handling in industrial dyeing processes. The physical form does not affect classification, so it remains a separate chemically defined salt under tariff item 2841.30.00.
Technical Grade Sodium Dichromate
> Technical grade sodium dichromate (98-99% purity) is an industrial-grade powder for wood preservation and metal surface treatment. It qualifies as a separate chemically defined compound under Chapter 28, with impurities not affecting its classification under tariff item 2841.30.00.