厂家直销优质湿法颗粒碳黑N990 炭黑N990 —耐火材料

Testify of Carbon black N990Grade:N990 wet processStandard:GB3778-2003Testifying date: Jan. 16th2011Delivering date:Jan. 20th2011LOTNO.: 10815GPrincipal: william zhaoItems:Standard:Result:DBP absorption value 10-5m3/kg

（吸油值）43±442Compressed DBP absorption 10-5m3/kg（压缩样DBP吸收值）36-4440CTAB absorption area 10m3m2/kg

（吸附比表面积）6-1210STSA 10m3m2/kg（吸附比表面积）20±520Nitrogen absorption value 10m3m2/kg

（氮吸收值）6-1210Heating loss（加热减量）%≤1.51.3ASH（灰分）%≤ 0.50.4#35 S. R. (500μm筛余物)%≤0.00100.0007#325 S. R. (45μm筛余物)%≤0.10000.0500Pour density kg/ m3（倾注密度）600±40600300％tensile strength Mpa

（300%定伸应力）-8.5±1.0-8.0Result（结果）Up to the gradePrincipal: Yuan Wang Testify: Li Ma