对甲苯磺酸,—水/6192-52-5

白色针状或粉末状结晶，易溶于水、醇和醚，极易潮解，易使棉织物、木材、纸张等碳水化合物脱水而碳化，难溶于苯和甲苯。碱熔时生成对甲酚。本品有时会以含1分子结晶水或4分子结晶水存在。 熔点：106-107℃ 闪点：180 oC 沸点：140℃
质量标准
  

Q(HG)SJ175-92
项目Item                                               分析纯    化学纯
                                                        (AR)      (CP)
含量(C₇H₈O₃S)Assay,%                                    ≥99.0     98.0
熔点范围(无水物)Melting range,℃                         104-107   103-107
灼烧残渣(以硫酸盐计)Ignition residue,%                   ≤ 0.1    0.2
乙醇溶解度试验Solubility in ethanol                      合格      合格
氯化物(Cl)Chloride,%                                     合格      合格
硫酸盐(SO₄)Sulfate,%　                                  ≤0.005    0.01


品级Grade                            ACS级  
                                   (ACS, ≥98.5%) 
纯度Purity                          ≥98.5% 
溶液澄清度clarity of solution       passes test 
水分water                           9.5-11.5%  
灼烧残渣Ignition residue            ≤0.1% 
熔点Melting point                   103-106 °C
硫酸根sulfate (SO42-):              ≤0.3% 
铁Fe:                               ≤0.01% 
钠Na:                               ≤0.002% 
重金属heavy metals (as Pb):         ≤0.001%