Acid Green 20
Acid Green 20
CAS: 5850-39-5
Molecular Formula: C22H16N6Na2O7S2
Acid Green 20 - Names and Identifiers
Acid Green 20 - Physico-chemical Properties
| Molecular Formula | C22H16N6Na2O7S2 |
| Molar Mass | 586.51 |
| Melting Point | >300℃ |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Dark blue green to green black powder. It is soluble in water, the aqueous solution is dark blue green, and the addition of concentrated sodium hydroxide solution is purple. Soluble in ethylene glycol ether, ethanol-soluble, insoluble in other organic solvents. Dye in 10% sodium hydroxide solution was purple solution; In concentrated sulfuric acid was blue green, diluted blue, with precipitation; In concentrated nitric acid Brown solution. |
| Use | Mainly used for dyeing wool and silk |
Acid Green 20 - Upstream Downstream Industry
| Raw Materials | Sulfamic acid Sodium carbonate Hydrochloric acid |
Acid Green 20 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | acid dark green B is suitable for dyeing wool, silk and wool blended fabrics. It is also used for direct printing of wool, silk and nylon fabrics. For wool and other fibers in the same bath dyeing, acetate fiber does not stain, cellulose fiber slightly stained. When staining, the color of copper ion was almost unchanged, and the color of iron ion was light and dark. Medium discharge. Can also be used for leather, paper coloring. mainly used for dyeing wool and silk |
| production method | using p-nitroaniline, H acid and aniline as raw materials, P-nitroaniline was first diazotized and first coupled with H acid, the aniline is then diazotized, a second coupling is carried out with the aforementioned monoazo compound, and finally the nitro group is reduced with sodium sulfide to give the product. After salting out, filtration, drying, grinding to get the finished product... |
Last Update：2024-04-09 21:11:58
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