Specification
(1).Appearance: pale yellow sheeted powder (2).Content: ≥ 99.0% (3).moisture: ≤ 0.20% (4).melting point: ≥107.3 (5).benzene insolubilize: ≤0.05% (6).Fe: ≤0.0005% (7).cl: ≤0.0010% (8).S: ≤0.0010%