C.I. Direct Red 187 Chemische Eigenschaften,Einsatz,Produktion Methoden
synthetische
in reflux (or a little take pressure), under the condition of sodium hydroxide solution in (E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid and 3-Sulfo-5-aminosalicylic acid diazo, and 2-Amino-4-methylanisole coupled to a heating products.
Properties and Applications
yellow light red. Moderate soluble in water for orange brown, not soluble in alcohol. The strong sulfuric acid for blue-black, diluted for ash brown. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick sodium hydroxide solution has the purple precipitation.
Standard
Acid Resistance
Alkali Resistance
Light Fastness
Soaping
Water
Fading
Stain
Fading
Stain
ISO
3
2
5-6
3
3
C.I. Direct Red 187 Upstream-Materialien And Downstream Produkte
