Appearance:yellowish green powder Melting point:357~359c Purity:?¥99% Mainly be used in whitening of polyester and plastic, as well in whitening of nylon during polymerization. For whitening of polyester and nylon; also used in abs, ps, hips, pa, pc, pp, pet, eva, pvc, etc. Rate of use: (per 1000kg of substrate) Polyester: 75-300g Eva, pp, nylon: 75-200g