三（羥甲基）甲基* 基本信息：

說(shuō)明介紹：

性狀 溶于水。
質(zhì)量標(biāo)準(zhǔn)  
  99%：
外觀Appearance                          白色結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry       符合
純度Purity （以干基計(jì)）                   ≥99.0%（滴定）
干燥損失Loss on drying                  <1 % （120°C）
重金屬Heavy metals （as Pb）              <5 ppm
pH                                      4.8 ～ 5.4 （0.5 M 水溶液，20°C）
氯離子Cl                                < 200 ppm
硫酸根SO4                               < 50 ppm
重金屬Heavy Metals （as Pb）             <10PPM
UV （5% 水溶液） （1 cm cell）
250 nm A:                              <0.05
99.5%:
外觀appearance                          white crystalline powder
不溶物Insoluble matter,                 passes filter test
灼燒殘?jiān)黫gn. residue                    ≤0.05% （as SO4）
干燥損失loss on drying, 110 °C         ≤0.5% 
pH                                      4.5-6.0 （25 °C, 0.5 M in H2O）
useful pH range                         7.4 - 8.8
pKa （25 °C）                            8.1
水溶性solubility H2O:                   soluble0.5 M at 20 °C, clear, colorless
氯離子chloride （Cl-）:                   ≤500 ppm
硫酸根sulfate （SO42-）:                  ≤50 ppm
  Al:                                   ≤5 ppm
  As:                                   ≤0.1 ppm
  Ba:                                   ≤5 ppm
  Bi:                                   ≤5 ppm
  Ca:                                   ≤10 ppm
  Cd:                                   ≤5 ppm
  Co:                                   ≤5 ppm
  Cr:                                   ≤5 ppm
  Cu:                                   ≤5 ppm
  Fe:                                   ≤5 ppm
  K:                                    ≤50 ppm
  Li:                                   ≤5 ppm
  Mg:                                   ≤5 ppm
  Mn:                                   ≤5 ppm
  Mo:                                   ≤5 ppm
  Na:                                   ≤50 ppm
  Ni:                                   ≤5 ppm
  Pb:                                   ≤5 ppm
  Sr:                                   ≤5 ppm
  Zn:                                   ≤5 ppm
λ                                0.5 M in H2O
紫外吸收UV absorption λ: 260 nm A:     ≤0.03
  λ: 280 nm A:                         ≤ 0.02
品級(jí)Grade                               細(xì)胞培養(yǎng)級(jí)，≥99.5%（T）  
                                      （for cell culture，≥99.5%（T） ）
外觀appearance                          white crystalline powder
水溶性solubility                        clear colorless solution at 20g plus 80ml of water
紅外光譜Infrared spectrometry           Conforms to Structure
水分water by karl fischer               ≤ 0.2%
紫外吸收uv absorbance                   ≤ 0.02 at 290nm （20%w/w）
重金屬heavy metals                      ≤ 5 ppm （as lead）
純度purity by NaOH titration            ≥99.5%
電泳實(shí)驗(yàn)electrophoretic test for use as a buffer component for separation of low molecular weight peptides           Pass
RNASE, DNASE, NICKASE AND PROTEASE      none detected
內(nèi)毒素endotoxin assay                   ≤ 0.1 eu/mg
平板計(jì)數(shù)standard plate count            ≤ 100 cfu/g
細(xì)胞培養(yǎng)測(cè)試cell culture test           pass
貯存 室溫保存
用途 生物緩沖劑，用于分離小分子量多肽。

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