Product:White carbon HT299-2                                                                                     Spec:SiO2(dry basis):90%min                                                                                Loss on Heating %,lasting 2 hours at 105 degree C:4.5-7.0                                                                                           Loss on ignition(dry basis) 1000 degree C lasting 2 hours:3.0-6.0                                                        PH Value:6.0-7.5                                                                                              BET Specific area:145-165                                                                                     DBP absorption,cm 3/g:2.0-3.0                                                                                    Iron mg/kg:＜500                                                                                                                      Copper mg/kg:  ＜50                                                                                                         Manganese mg/kg:＜30     Packing:20KGS