溴化铵

性状描述: 无色结晶或白色结晶粉末，味咸，。452ºC升华，高温升华而无熔点。溶于水、醇、微溶于醚。在空气中放置微有吸湿性，且轻微分解，因析出少量溴使颜色变黄，水溶液呈中性或弱碱性。
比重2.429

质量标准:

项目Item                                      分析纯  
                                               (AR)  
主含量(NH₄Br)Assay,%                         ≥99.0%
干燥失重Drying loss,% ：                     ≤0.20%
澄清度试验Clarity                              合格
水不溶物Insoluble matter in water,% ：       ≤50PPM
灼烧残渣(以硫酸盐计)Ignition residue,%       ≤ 0.03
PH（5%）：                                   6.0-7.5
溴酸盐 (BrO₃)Bromate,% ：                    ≤9PPM
氯化物(Cl)Chloride,%    ：                   ≤0.15%
硫酸(SO₄Sulfate,%：                          ≤40PPM
碘(I)Iodide,%  ：                            ≤50PPM
重金属(以Pb计)Heavy metals,% ：              ≤0.2PPM
砷 ：                                        ≤0.2PPM
铜 ：                                        ≤0.2PPM
铁(Fe)Iron,%  ：                             ≤0.2PPM


项目名称Item                                   ACS 级
含量(NH₄Br)Assay                             ≥99.0%
pH(5%溶液，25.0℃)pH                         4.5-6.0
水不溶物Insoluble matter                     ≤0.005%
灼烧残渣Residue after ignition               ≤0.01%
溴酸盐(BrO₃)Bromate                          ≤0.002%
氯化物(Cl)Chloride(Cl)                       ≤0.2%
碘化物(I)Iodide(I)                           ≤Passes test
硫酸盐(SO₄)Sulfate                           ≤0.005%
钡(Ba)Barium(Ba)                             ≤0.002%
重金属(以Pb计)Heavy metals(as Pb)            ≤5ppm
铁(Fe)Iron(Fe)                               ≤5ppm


99.99% metals basis：


外观Appearance                          粉末或结晶
不溶物insolubles                        ≤0.005%
总金属杂质total metallic impurities    
<100 ppm >灼烧残渣Residue on ignition             ≤0.01%
pH range                                4.5 - 6.0
anion traces  
溴酸盐bromate (BrO3-):                 ≤0.002%
氯chloride (Cl-):                      ≤0.2%
碘iodide (I-):                         ≤0.005%
硫酸根sulfate (SO42-):                 ≤0.005%
纯度Purity                              ≥99.99% Based On Trace Metals Analysis
钡Ba:                                  ≤0.002%
铁Fe:                                  ≤5 ppm
重金属heavy metals:                    ≤5 ppm


99.999%metals basis：


外观Appearance                          白色粉末
X-射线衍射X-Ray Diffraction             Conforms to Structure
纯度Purity                              ≥99.999% Based On Trace Metals Analysis
总金属杂质Total Metallic Impurities     20ppm by ICP Atomic emission

储存条件: 密封避光储存。

用途: 用作化学分析试剂，点滴分析铜，制备其它溴化合物 主要作镇静剂。用于神经衰弱及癫癎等中服药、照相胶片和相纸。也用于石版印刷、木材防火剂。