白色结晶粉末。溶解度:1000 g/L水 (20°C)，<10 g/L 甲醇 (20°C)。
熔点：277-282°C
闪点：116°C
pH range 6.5 - 7.9 
pKa (25 °C) 7.2

品级Grade                         分子生物学级, ≥99.5% (T)
                             (for molecular biology, ≥99.5% (T)) 
纯度assay                                ≥99.5%(T)
钙Calcium(Ca）                           ＜10PPM 
铁Iron(Fe)                               <5PPM 
氯Chloride                               ≤0.005%
灼烧残渣Residue On Ignition              ≤0.1%
硫酸根Sulfate                            ≤0.005%
重金属Heavy Metals （as Pb)              <5PPM 
A260(1M,water):                         ≤0.020
A280(1M,water):                         ≤0.015
DNA酶DNases,                              none detected 
RND酶RNases,                              none detected 
不溶物insoluble matter,                   passes filter test 
磷酸酶phosphatases,                       none detected 
蛋白酶proteases,                          none detected     
 
 
 

生物缓冲剂
密封保存