C.I.69020 - Names and Identifiers
C.I.69020 - Physico-chemical Properties
| Molecular Formula | C43H25N3O7
|
| Molar Mass | 695.67 |
| Density | 1.2637 (rough estimate) |
| Boling Point | 700.85°C (rough estimate) |
| Refractive Index | 1.7790 (estimate) |
| Physical and Chemical Properties | Chemical properties purplish red powder. Insoluble in water. It is purple in concentrated sulfuric acid and red after dilution. It is reddish brown in the alkaline solution of hydrosulfite and brown in the acidic solution. |
| Use | Uses reduced red brown 5RF is mainly used for cotton fiber dyeing and cotton printing, good affinity, levelness in general, is one of the most red brown chromatogram, commonly used in color matching. Also used for viscose fiber, silk dyeing. |
C.I.69020 - Upstream Downstream Industry
C.I.69020 - Introduction
Vat Brown 25(Vat Brown 25) is an organic synthetic dye, also known as Carmine GS or an English name, its chemical name is 1-aminopropyl -4-amino -1, 8-naphthyridine -2-one, chemical formula C16H12N4O. It is usually in the form of a dark brown powder.
Vat Brown 25 is often used as a Brown dye in the dye industry. It can be used for dyeing textiles, especially cotton fabrics. In addition, it can also be used for dyeing leather and wood.
Vat Brown 25 is generally prepared by synthetic chemical methods. The main raw materials are catechol, urea and ethyl chloroacetate. These raw materials are reacted under appropriate conditions, and after a series of reaction steps, Vat Brown 25 is finally obtained.
Regarding safety information, Vat Brown 25 is generally safe under normal use conditions, but the following matters still need to be noted:
1. Need to avoid inhalation of particles or powder, should wear appropriate protective masks;
2. Avoid direct contact with skin or eyes, it is recommended to wear gloves and goggles when using;
3. Keep away from fire, sparks and high temperature during use and storage;
4. If ingested or inhaled by mistake, seek medical assistance immediately and bring the product label or packaging for diagnosis.
Last Update：2024-04-10 22:29:15