Indigo powder [ 482-89-3 ]

- Appearance
- dark violet powder
- Melting Point
- 390-392 (dec.) ( ℃ )
- Boiling Point
- 158.2 ( ℃ )
USES: as indigo dye reduction, mainly for the wool or cotton yarn, cotton, silk, tasted for making food dye, also can produce 5.5 '- 7.7' - tetrabromobisphenol indigo, and used in biochemical reagents and indicator etc.
Technical conditions: execution of the People's Republic of China professional standard employed by HG/T2750-1996
Appearance: dark blue uniform powder
Content % (oxidation) : p 94
Fineness % (through 60 mesh screen) : p 95
Moisture content % : more than 1.0
Iron ion: 300ppm