湘之彩牌氧化铁黄符合化工行业标准T2249-1991《氧化铁黄颜料》

 一、湘之彩牌氧化铁黄的通用性能

 湘之彩牌氧化铁黄的通用指标                                  一级品

铁含量(Fe2O3)                                              ≥87%

颜料含量                                                    100

105°C挥发物                                               ≤1.0%

水溶物                                                     ≤0.5%

筛余物(45um筛孔)                                           ≤0.4%

水萃取液碱度 ml                                             ≤20

水悬浮液PH值                                               6.5-7

吸油量 g/100g                                               25-35

铬酸铅                                                      阴性

总钙量(CaO)                                                 ≤0.3

颜色(与标样比)                                              近似

相对着色力(与标样比)                                       ≥100

有机着色物的存在                                            阴性