Vat Dark Brown H2R - Names and Identifiers
Vat Dark Brown H2R - Introduction
Vat Brown 57 is a common organic dye, chemically named Blo Brown B or Vat Dye 7. Its chemical formula is C16H9ClN2Na2O7S2 and its relative molecular mass is 502.82.
properties of reduced brown 57 mainly include:
1. Appearance: Reduced brown 57 is a dark red to dark brown crystalline powder.
2. solubility: soluble in water, alcohol and acidic medium, insoluble in organic solvents.
reduction brown 57 main uses are:
1. Dye: As a dye for cotton fiber, wool, silk and other fibers, it has good light resistance, washability and anti-pollution properties.
2. printing and dyeing: can be used to make fabric, printing, silk and wool and other textiles dyeing and back coating.
3. Food colorant: Reduced Brown 57 is also used as a food colorant to provide a reddish brown color for food.
The method for preparing reduced brown 57 is mainly obtained by the reduction reaction of aniline and 2-methoxy-5-nitroaniline under acidic conditions.
Regarding safety information, reduced brown 57 is a low-toxic substance, but the following matters still need to be noted:
1. avoid inhalation powder and skin contact. Personal protective equipment such as protective gloves, protective clothing and respirators should be worn during use.
2. avoid contact with oxidants, organic chlorine compounds and other substances to avoid dangerous reactions.
3. During use or storage, it should be kept away from open flames and high temperature environments to prevent fire or explosion.
4. in case of accidental ingestion or eye contact, please seek medical attention or rinse with plenty of water.
5. Please comply with the relevant local laws and regulations, the correct use and disposal of the substance.
Last Update：2024-04-09 20:02:46