Hubei prescient chemical co., LTD
产品名称:紫外线吸收剂BP-6(UV-49)CAS号:131-54-4产品指标:外观:淡黄色粉末含量:≥98%熔点:≥134°C挥发份:≤ 0.5%K值:≥49色度:≤ 4透光率:300-400nm: ≤ 1%450-550nm: ≥90%500nm+:≥95%