灰色細(xì)粉粒 (98%通過100目標(biāo)準(zhǔn)篩) 
         干燥失重：               ＜14％                                                                     

         pH值(1％水溶液，25度)：   6.5±1.0                                                 

         熱粘度(1％ 水溶液，加熱至90度后冷卻到25度)：>4000厘泊

         冷粘度(1％ 水溶液， 25度)： ＞3000厘泊

         總灰分：                   ＜1.5％           

         蛋白質(zhì)：                   ＜3.5％

         多 糖：                    ＞75％ 

         重金屬：                   ＜20 ppm 

               鉛         ＜5 ppm          

               砷         ＜2 ppm       

       衛(wèi)生指