Quaternary Salts
& Surface Active Agent Series
Fine Chemicals
& Pharmaceutical Intermediates
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Products > Fine Chemicals & Pharmaceutical Intermediates
Indigo
molecular formula |
C16H10N2O2 |
molecular weight |
262 |
nature |
This product is dark-blue uniform powdery or granular. It cannot be dissolved in water and common organic solvents such as ethanol and aether, but can be dissolved in hot aniline and melt phthalic anhydride. Its melting point in the closed capillary is 390-392℃, and it begins sublimating slowly at 290℃. It has very good sunburn endurance and application performance. |
appearance |
dark-blue uniform powder or granule |
（1）original powder |
|
content |
%≥94.0 |
particbe size(60mesh) |
%≥96.0 |
moisture |
%≤1.0 |
Fe3+ |
＜200PPM |
（2）pelleting |
|
content |
%≥94.0 |
moisture |
%≤1.0 |
Fe3+ |
＜200PPM |
（3）Promoter |
|
content |
%≥93.0 |
moisture |
%≤0.8 |
Fe3+ |
＜200PPM |
use |
Reducing indigo to be dyestuff, which can be mainly used in dyeing cotton fabric, and otherwise can be made to 5.5-7.7- tetrabromo indigo, and then be used in biochemical and indicators, etc. |
Packing |
Plastic bucket, 25kg/bucket (granule) |
Iron bucket, 25kg/bucket (granule) |
|
Paper bucket, 25kg/bucket (granule) |
|
Weaved bag, 25kg/bag (granule) |
|
Big iron bucket, 25kg/bucket (granule) |
|