BES

Molecular Structure：

MDL：
MFCD00007533

Molecular Formula：
C6H15NO5S

Molecular Weight：
213.20

Alias：
N,N-双(2-羟乙基)-2-氨基乙磺酸,N,N-二(2-羟乙基)-2-氨基乙磺酸,2-(二乙醇氨基)乙磺酸 N,N-Bis(2-hydroxyethyl)taurine N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid

Product order：

Name	Specifications	Packing	Price	Delivery
BES	用于分子生物学, ≥99.5% (T)	100g	RMB 2530	Consulting service
BES	用于分子生物学, ≥99.5% (T)	25g	RMB 748	Consulting service
BES	≥99.5% (T)	100g	RMB 748	Consulting service
BES	≥99.5% (T)	25g	RMB 209	Consulting service
BES	≥99% (T)	500g	RMB 715	现货
BES	≥99% (T)	100g	RMB 209	现货
BES	≥99% (T)	25g	RMB 82.5	现货

Character：
白色结晶粉末。
熔点：152-154℃
useful pH range 6.4 - 7.8
pKa (25 °C) 7.1

Quality Standard：
99%:

纯度assay                             ≥99.0%(T)
水分Moistrue                          ≤0.5%
氯Chloride                            ≤0.05%
重金属Heavy Metals （as Pb)           <5PPM
灼烧残渣Residue On Ignition           ≤0.1%
pH(1%;H2O)                            4.1-4.5（20℃）
A260(1M,water):                       ≤0.095
A280(1M,water):                       ≤0.080

99.5%:

含量assay                              ≥99.5% (T)
灼烧残渣Residue on ignition(900 °C)   ≤0.05%
pH                                    2.5-5.0 (25 °C, 1 M in H2O)
useful pH range                       6.4 - 7.8
pKa (25 °C)                          7.1
水溶性solubility H2O:                 soluble1 M at 20 °C, clear, colorless
氯(Cl-):                              ≤50 ppm
硫酸根sulfate (SO42-):                ≤100 ppm
cation traces by ICP Atomic emission
  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 1 M in H2O
UV absorption
  λ: 260 nm A:                       ≤0.095
  λ: 280 nm A:                       ≤0.080

品级Grade                              分子生物学级
                                (for molecular biology, ≥99.5% (T))
含量assay                              ≥99.5% (T)
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
灼烧残渣Residue on ignition(900 °C)   ≤0.05%
pH                                    2.5-5.0 (25 °C, 1 M in H2O)
useful pH range                       6.4 - 7.8
pKa (25 °C)                          7.1
水溶性solubility H2O:                 soluble1 M at 20 °C, clear, colorless
氯(Cl-):                              ≤50 ppm
硫酸根sulfate (SO42-):                ≤100 ppm
cation traces by ICP Atomic emission
  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 1 M in H2O
UV absorption
  λ: 260 nm A:                       ≤0.095
  λ: 280 nm A:                       ≤0.080

Storage：
室温
用途生物缓冲剂