Shaanxi Shangnan County Dongzheng Chemical Co., Ltd. 
1. Appearance
Orange-red monoclinic crystals or powder.
2. Physical and Chemical Properties
A strong oxidizer, soluble in water and ethanol, and may cause combustion or explosion when in contact, friction, or impact with organic substances.
3. Application
It is used for barium quantification, as well as a catalyst, mordant and oxidizer in various industrial process. It serves as a raw material for laboratory preparation of pure nitrogen and is an essential component in smokeless pyrotechnics. In the printing industry, it finds application in photogravure plate-making, developer formulation, and lithographic development. It is applied in manufacturing ceramic glazes and fireworks, acting as a precursor for synthesizing sodium dodecyl sulfate and functions as a catalyst in the production of lauryl and myristyl alcohols from coconut oil. In textile dyeing, it serves as a mordant for acid and chrome dyes, while in polymer processing, it is employed as a foaming agent for plastics and rubber.
4. Product Information
English Name: Ammonium Dichromate
CAS Number: 7789-09-5
Molecular Formula: (NH₄)₂Cr₂O₇
Molecular Weight: 252.07
5. Product Categories and Quality Standards
Standard: HG/T 5217-2017
Quality Index | Specification | |
First Grade | Qualified Grade | |
| Dichromate (as (NH₄)₂Cr₂O₇), w/% ≥ | 99.00 | 98.00 |
Water-insoluble matter, w/% ≤ | 0.01 | 0.02 |
| Chlorides (as Cl), w/% ≤ | 0.15 | 0.30 |
| Sulfates (as SO₄²⁻), w/% ≤ | 0.02 | 0.05 |
Sodium ion (as Na⁺), w/% ≤ | 0.40 | 1.00 |
6. Packaging
25kg reinforced woven poly bags with polyethylene liner.
7. Storage
During storage and transportation, protect against moisture, heat, and impact. Keep away from flammable materials. Do not store together with food or strong reducing agents.
