硫酸钙

无色柱状结晶或白色结晶性粉末，易缓慢溶于甘油，微溶于水，不溶于一般有机试剂。加热至200°C以上可成为无水物。密闭于干燥处。吸入后呼吸新鲜空气，接触后用水冲洗，吞食大量后考虑就医。不燃物。

技术要求

含量（CaSO4·2H2O）                                    ≥99.0%

澄清度试验，号                                               ≤3

盐酸不溶物                                                      ≤0.025%

氯化物（Cl）                                                   ≤0.002%

硝酸盐（NO3）                                               ≤0.002%

铵盐（NH4）                                                   ≤0.005%

碳酸盐（CO3）                                                ≤0.05%

铁（Fe）                                                          ≤0.0005%

重金属（以Pb计）                                             ≤0.001%

碱金属及镁（以MgO计）                                   ≤0.2%