Anthraquinone
Anthraquinone is an important intermedium in dye production and is widely used to produce reductive, dspersive, acid and active dye. In recent years, it is also used in paper making industry to raise the pulp yield and cut down the consumption and reduce the pollutions of waste water, gas and residue.
molecular formula£ºC14H8O2
molecular weight£º208.21
Quality standards of anthraquinone
|
Property
|
specification
|
||
|
excellent
|
first
grade
|
qualified
|
|
| Property | yellow or light grey to green-grey crystal(powde) | ||
| initial melting point¡İ |
284.2
|
283.0
|
280.0
|
| purity¡İ% |
99.0
|
98.5
|
97.0
|
| ash%¡Ü |
0.2
|
0.5
|
0.5
|
| weight
loss after being dried%¡Ü |
0.2
|
0.5
|
0.5
|
 |
 |
 |
 |
 |
|
 |