For further processing only. Others Hepes Hepes 3.2.15.1.3.1 crystalline powder 10172944103 Hepes Hepes Reagents, kits custom fill Not Available CustomBiotech product. Please contact your local representative. Will be supplied as "Hepes". Unit of measure is "kg". 7365-45-9 en Use Hepes as a buffer in reagents. en Buffer for diagnostic tests, such as amylase test. en 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid en Appearance: White crystalline powder Solubility: Clear, colorless solution in water (c=1 mol/L) pK value: 7.21-7.41 (+37°C); 7.45-7.65 (+20°C) Melting range: +207 to +213°C Hepes (alcalimetric): ≥97% Hepes (from N): ≥97% N (elementary analysis): ≥11.4% Thin layer chromatography (TLC): Chromatographically homogeneous A260 (against water): ≤0.050 A405 (against water): ≤0.030 Cl (chloride meter): ≤0.04% Hepes mA/min (Purity check, α-amylase contamination): ≤0.1 Exclusion of skin contact and contamination with salvia: Corresponds to specification. Stability: At +15 to +25°C within specification range for 24 months. en