Molecular Formula:C25H30ClN3
Molecular Weight: 407.98
CAS Registry Number:548-62-9

Properties and Applications: bright blue purple. SAP green flash even powder or small pieces. For purple soluble in water, soluble in ethanol for purple. The strong sulfuric acid for titian, dilute for dark green light after yellow, then turned into the blue and purple; In nitric acid for olive. The dye solution to join sodium hydroxide purple precipitation; Join the hydrochloric acid for blue. In the cotton dyeing thing of sulfuric acid solution 10% drops into green light yellow; On drop acid solution ferrie sulfate-potassium thiosulfate into dark yellow, and a green light blue rings. The fabric dyed tannins mordant dyeing, for colourful blue purple, tungsten light in a red. Used for silk dyeing, also used in wool dyeing and can be used for leather, paper, grass products, hemp dyeing, can be made into color break, to paint of paint, and stamp-pad stamp-pad oil, printing ink, and colored pencils cultural and educational supplies, etc. In medicine LongDanZi used for the original fluid.

Molecular Formula:C33H40ClN3
Molecular Weight: 514.14
CAS Registry Number:2390-60-5

Properties and Applications: colourful red blue light. Flash brown cream content. Slightly soluble in cold water, soluble in hot water for blue, easily soluble in ethanol to blue. The strong sulfuric acid is palm in light yellow, diluted red for yellow; In nitric acid for olive green. The dye solution to join sodium hydroxide for red brown. The thing in cotton dyeing, drop 10% of sulfuric acid into a light yellow brown; Drops of 10% sodium hydroxide solution become red light yellow; Drop acid solution red yellow ferrie sulfate-potassium thiosulfate change. Used for silk, wool, cotton cloth tannins mordant dyeing of dyeing, also can be used in the manufacture of oil, carbon, ball pen wax paper, bamboo and wood light color. Also used in the manufacture of color pigments and solvent dye deposit.

Molecular Formula:C16H12N4O2
Molecular Weight: 292.29
CAS Registry Number:3025-77-2
Manufacturing Methods :4-Nitrobenzenamine diazotization, and Naphthalen-2-amine coupling.
Properties and Applications:dark blue light red to dark red light purple. From ethanol to crystallize in the product is golden needle crystal, melting point 185.5 ℃ soluble in ethanol, acetone and toluene. In concentrated sulfuric acid to red light blue, dilution after magenta to red solution, there are red brown precipitation; In concentrated sodium hydroxide solution insoluble.

Molecular Formula:C33H32ClN3
Molecular Weight: 506.08
CAS Registry Number:2580-56-5

Molecular Formula:C29H32ClN3
Molecular Weight: 458.04
CAS Registry Number:2185-86-6

Properties and Applications: red light blue. Blue gray uniform powder, slightly soluble in cold water, soluble in hot water for blue, easily soluble in ethanol to blue. The strong sulfuric acid is palm in light yellow, diluted by light green to blue. The dye solution to join with brown sodium hydroxide floe content precipitation. Used for silk, wool, cotton cloth tannins mordant dyeing of dyeing, also used in linen, leather, paper, bamboo, wood color, also used in the manufacture of dyes and organic solvent paint.

Molecular Formula:C23H25ClN2
Molecular Weight: 364.91
CAS Registry Number:569-64-2

Properties and Applications:  bright blue light green. Green belt flash crystallization. Soluble in cold water and hot water are blue-green, easily soluble in ethanol are blue-green. The strong sulfuric acid for yellow, diluted into dark orange; In nitric acid to orange, diluted into orange brown. The dye solution to join sodium hydroxide formation microstrip green white precipitation; Add hydrochloric acid to red light yellow. Used in acrylic, silk, wool, vinegar fiber dyeing, also used in leather, hemp, bamboo, wood, paper, shading, also used in the manufacture color amylum, solvent dye

NAME: INDIGO BLACK
MOLECULE FORMULAR:
MOLECULE WEIGHT:
CAS No:
APPREANCE: Blue powder
STRENGTH: 100%
SHADE: SIMILAR TO THE STANDARD
MOISTURE: 0.76%
CONTENT: INDIGO 75%
PACKAGE: 25KG WOVEN BAG
USAGE:
Textile dyeing & printing inks, manufacture of indigo derivatives, paints, analytical reagents.