白色片狀結(jié)晶或結(jié)晶性粉末。無氣味或微有苯甲酸氣味。在空氣中逐漸放出氨。熔點  192-198 °C (dec.)(lit.) 溶解度  H2O: 1 M at 20 °C, clear, colorless 水溶解性  soluble
 

項目Item                                                                  分析純      化學(xué)純
                                                                                   (AR)        (CP)
含量［C6H5COONH4)Assay,%                              ≥99.0      98.0
pH(50g/L溶液，25℃)pH                                     6.0-7.0     6.0-7.0
水溶解試驗Solubility                                                合格        合格
乙醇溶解度試驗Solubility in ethanol                    合格        合格
灼燒殘渣(以硫酸鹽計)Ignition residue,%              ≤0.01      0.05
氯化物(Cl)Chloride,%                                             ≤0.005     0.02
硫化合物(以SO4計)Sulfur compounds                ≤0.005     0.02
鐵(Fe)Iron,%                                                            ≤0.0005    0.001
砷(As)Arsenic,%                                                      ≤0.0002    0.0002
重金屬(以Pb計)Heavy metals,%                          ≤0.001     0.002

項目名稱Item                                                           ACS Grade
含量Assay                                                                 ≥99.7%
5%溶液25℃的pH值pH                                             5.0-8.0
不溶物.Insoluble matter                                         ≤0.005%
灼燒殘渣Residue after ignition                               ≤0.005%
還原高錳酸鹽Substances reducing permanganate          Passes test
氯化合物(Cl)Chloride compounds(as Cl)             0.01%
重金屬(以Pb計)Heavy metals(as Pb)                     ≤0.001%
鐵(Fe)Iron(Fe)                                                             ≤0.001%

用作防腐劑及分析試劑

毒性分級 高毒
急性毒性 口服-大鼠 LD50: 825 毫克/公斤; 口服-小鼠LD50: 235 毫克/公斤
可燃性危險特性 可燃;燃燒產(chǎn)生有毒氮氧化物和氨煙霧
儲運(yùn)特性 庫房通風(fēng)低溫干燥
滅火劑 干粉、泡沫、砂土、二氧化碳, 霧狀水