Product description:
Acid blue 7 is a blue uniform powder, easily soluble in water, water solution is transparent green light blue solution.
The advantages are pure color, good color rate, uniform, bright color.
Product parameter:
Synonyms | Alphazurine A C.I. 42080 C.I. Acid Blue 7 C.I. Acid Blue 7, sodium salt C.I. Acid Blue 7 (7CI) C.I. Acid Blue 7, sodium salt (8CI) Acid blue 7 Acid Blue 7 Patent Blue A Acid Blue 7 (42080) Acid sky blue A Acid turquoise blue 2G acid turquoise blue a |
CAS No. | 3486-30-4 |
EINECS No. | 222-476-0 |
Strength | 100% |
Molecular formula | C37H35N2NaO6S2 |
Molecular Weight | 690.8034 |
Appearance | Blue powder |
Shade | Reddish |
Application | Used for dyeing wool fabric and silk nylon, can also be used for paper, soap, wood, biology, leather coloring |
Solubility | Soluble in cold and hot water, the water solution appears green light blue, add sodium hydroxide solution, boiling from blue to purple. Soluble in ethanol appears blue. Appears purple in concentrated sulfuric acid and turns yellow when diluted. When dyeing,the color of copper and iron ions turn green and dark, and chromium ions are not sensitive. |
Water solubility | 134.8g/L at 20℃ |
Density | 1.371 at 20℃ |
Melting point | 290℃ |
Vapour pressure | 0Pa at 25℃ |
Stability | Stable. Incompatible with strong oxidizing agents |
Moisture | Less than 8% |
Product picture:
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