Nanjing Asian Chem Co., Ltd.

HEPES CAS:7365-45-9 English Name:4-(2-hydroxyerhyl)piperazine-1-erhanesulfonic acid Molecular Formula:C8H18N2O4S Molecular Wt:238.31 Appearance:Free flowing white powder Assay(potertiometric cal on dry substance):99.8%. Enterprise Standard. Application: it is an important PH stable reagent in biotic experiments. Appropriate PH is obtained by mixing mild acid and its conjugate base. Many biological responses happen in neutral condition (usually PH 6-8), so the buffering range is required to be in PH 6-8. In addition, the form of acid-base of buffer should not chelate with some metallic ions. Characteristics of biological buffer: 1, Strong water-solubility; 2. Compatibility of the acid-base dissociation balance; 3. Low membrance penetration rate; 4. Low metal chelating ability; 5. High chemical stability; 6. Low absorption in ultraviolet and visible region. Packing:25KG / DRUM.

CAS:26239-55-4 Packing:25KG/Drum English Name:N-(2-acetamido)iminodiacetic acid Molecular Formula:C6H10N2O5 Molecular Wt:190.2 Appearance:white power Assay,%(Titration):99.7% Enterprise Standard Application: it is an important PH stable reagent in biotic experiments. Appropriate PH is obtained by mixing mild acid and its conjugate base. Many biological responses happen in neutral condition (usually PH 6-8), so the buffering range is required to be in PH 6-8. In addition, the form of acid-base of buffer should not chelate with some metallic ions. Characteristics of biological buffer: 1, Strong water-solubility; 2. Compatibility of the acid-base dissociation balance; 3. Low membrance penetration rate; 4. Low metal chelating ability; 5. High chemical stability; 6. Low absorption in ultraviolet and visible region.

TRIS-HCL CASú¦1185-53-1 Packingú¦25KG / DRUM Appearance:White crystal powder Assay(by Titn,dried basis):100.0% English Name:Tris(hydroxymethyl)aminomethane hydrochloride Molecular Formula:C4H11NO3.HCL Molecular Wt:157.60 Enterprise Standard

CASú¦7365-44-8 Packingú¦25KG/DRUM Appearance:White crystalline powder Assay(Titration):99.8% English Name:N-[Tris (hydroxymethyl)methyl]-2-aminoethanesulfonic acid (TES) Molecular Wt:229.25 Enterprise Standard

CASú¦64431-96-5 Packingú¦25KG / DRUM Appearance:Fine white crystals Purity:100.1% English Nameú¦1,3-Bis[Tris(hydroxyethyl)methylamino] Propane Molecular Formula:C11H26N2O6 Molecular Wt:282.34 Enterprise Standard