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HEPES sodium salt

Molecular Structure:
MDL:
MFCD00036463
Molecular Formula:
C8H17N2NaO4S
Molecular Weight:
260.29
Alias:
N-(2-羟乙基)哌嗪-N'-(2-乙磺酸钠),HEPES钠盐 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid sodium salt N-(2-hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid) sodium salt
Product order:
Name Specifications Packing Price Delivery
HEPES sodium salt 超纯级 99.5% 25g RMB 220 Consulting service
HEPES sodium salt 99% 100g RMB 220 Consulting service
HEPES sodium salt 99% 25g RMB 126.5 Consulting service
Character:
纯白色结晶粉末。
pH range 6.8 - 8.2
pKa (25 °C) 7.5 
Quality Standard:
项目                                 生化试剂级
                                        BC
纯度assay                             ≥99%(T)
水分Moistrue                          ≤3%
重金属Heavy Metals                    <5PPM


项目                                  超纯级
纯度assay                             ≥99.5%(T)
水分Moistrue                          ≤3%
氯Chloride                            ≤0.05%
硫酸根Sulfate                         ≤0.05%
重金属Heavy Metals (as Pb)           <5PPM
pH(1%;H2O)                            4.7-6.0
A260(1M,water):                       ≤0.2
A280(1M,water):                       ≤0.2

品级Grade                               细胞培养级  
                                   ( for cell culture, ≥99.5% (T))
外观Appearance                          白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
纯度Purity                              ≥99.5% (titration)  
水溶解试验solubility in water           CLEAR COLORLESS,500MG/ML IN WATER
水分water                               ≤3%(K.F)
铁Fe:                                   ≤5 ppm
重金属heavy metals (as Pb):             ≤5 ppm
紫外吸光度UV ABSORBANCE
290nm,A                               ≤0.05(33%W/W)  
260nm,A                               ≤0.05 (0.1M H2O)
280nm,A                               ≤0.05(0.1MH2O)
DNase, RNase, protease,                 none detected
内毒素Endotoxin                        ≤ 0.1 EU/MG
平板计数Standard plate count           ≤ 100 CFU/G
细胞培养测试Cell culture test          Pass

Storage:
室温保存
用途  生物缓冲剂
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