Sodium Dichromate also known as Sodium Bichromate is used in a variety of industrial applications like as an oxidizing agent (to make dyes, inks, and other chemicals), bleaching agent (fats, oils, sponges, and resins), tanning agent, and mordant in dyeing; Also used in electric batteries, for refining petroleum, electro-engraving copper, in corrosion inhibitors and corrosion inhibiting paints, metal treatments, hardening gelatin, defoliation of cotton and other plants and shrubs, and as a topical anti-infective; Used for metal finishing (chrome plating, electroplating, passivating, anodizing, and brightening), to make vitamin K, colored glass, ceramic glazes, essential oils, and perfumes.
Sales Specification

Appearance: Orange-red mono-slanting corrugation crystallization or fine needle crystallization.
Assay (Na2Cr2O7.2H2O): 98.5% Min
Sulphate (SO4 2-): 0.3% Max
Chloride(Cl-): 0.05% Max
Iron (Fe): 0.006% Max.
Water solubles: 0.01 Max.
Packing

110.23 Lb drums, 18 drums per pallet
DOT Transportation

UN/NA: 3288
Proper Shipping Name: Toxic solid, inorganic, n.o.s. (Sodium dichromate)
Hazard Class: 6.1 (Poisonous material)
Packing Group: III
RQ

The Reportable Quantity (RQ) under CERCLA is 10 lbs