HCOONH4 MW 63.06 d 1.26 CAS [540-69-2]
Assay >98%
UV (0.1% aqueous): 215nm >10%; 225nm >50%; 230nm >80%; 240nm >95%; 245-400nm >99%
Fluorescence (0.1% aqueous, as quinine): 254nm <1 ppb; 365nm <1 ppb
Suitability for HPLC passes test
Suitability for LC-MS passes test
Chloride <0.0005%
Sulphate <0.005%
Trace ionic impurities (0.1% aqueous):
Ag, Cu, Fe, K, Mg, Mn, Ni, Pb, Zn <10 ppb each
Al, Ca <25 ppb each
Na <50 ppb
Deliquescent, hygroscopic. Replace cap promptly after use.
Application: HPLC as buffer reagent, LC-MS as additive