Specification Sheet
Product Name Formamide,
BioUltra, for molecular biology, ≥99.5% (T)
Product Number 47671
Product Brand SIGMA
CAS Number 75-12-7
Molecular Weight 45.04
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless
APPEARANCE (FORM) Liquid
TITRATION 99.5 - 100.5 %
TITRATION (METHOD) N-DETERMINATION ACCORDING TO KJELDAHL
REFRACTIVE INDEX N20/D 1.446 - 1.448
FREEZING POINT 2.0 - 3.0 C
WATER (COULOMETR.) ≤ 0.1 %
RESIDUE ON IGNITION ≤ 0.1 %
INFRARED SPECTRUM CONFORMS TO STRUCTURE
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
SILVER (ICP) ≤ 5.0 mg/kg
ALUMINIUM (ICP) ≤ 1.0 mg/kg
BARIUM (ICP) ≤ 1.0 mg/kg
BISMUTH (ICP) ≤ 1.0 mg/kg
CALCIUM (ICP) ≤ 5.0 mg/kg
CADMIUM (ICP) ≤ 1.0 mg/kg
COBALT (ICP) ≤ 1.0 mg/kg
CHROMIUM (ICP) ≤ 1.0 mg/kg
COPPER (ICP) ≤ 1.0 mg/kg
IRON (ICP) ≤ 1.0 mg/kg
POTASSIUM (ICP) ≤ 20 mg/kg
LITHIUM (ICP) ≤ 1.0 mg/kg
MAGNESIUM (ICP) ≤ 1.0 mg/kg
MANGANESE (ICP) ≤ 1.0 mg/kg
MOLYBDENUM (ICP) ≤ 1.0 mg/kg
SODIUM (ICP) ≤ 20 mg/kg
NICKEL (ICP) ≤ 1.0 mg/kg
LEAD (ICP) ≤ 1.0 mg/kg
STRONTIUM (ICP) ≤ 1.0 mg/kg
THALLIUM (ICP) ≤ 5.0 mg/kg
ZINC (ICP) ≤ 1.0 mg/kg
ARSENIC TRACES (MHS-AAS) ≤ 0.1 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 10 mg/kg
CHLORIDE (CL) ≤ 1.0 mg/kg
ION CHROMATOGRAPHY (NH4+) ≤ 1000 mg/kg
EXTRANEOUS ACTIVITIES DNAses, RNAses, Proteases, Phosphatases Not Detectable
SOLUBILITY (METHOD) 10M IN WATER, PH 1M IN WATER
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) 6.5 - 9.4
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.4
UV - ABS. AT 280 NM ≤ 0.1
RECOMMENDED RETEST PERIOD 24 MONTHS