Molecular Formula: C14H8O2
Molecular weight: 208.21

Specs:
Apprearance: Yellow or light grey to green-grey crystal(powder)
Intial melting point C: 283.0 min
Purity %: 98.5% min
Ash %: 0.5 max

Weight loss after being dried %: 0.5 max
Use: As an important intermedium in dye production and is widely used to produce reductive, dispersive, acid and active dye. In recent years, it is also used in paper making industry to raise the pulp yield and cut dow the consumption and reduce the pollutions of waste water, gas and residue.