Specification Sheet
Product Name Potassium chloride solution,
BioUltra, for molecular biology, ~1 M in H2O
Product Number 60142
Product Brand SIGMA
CAS Number 7447-40-7
Molecular Weight 74.55
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless
APPEARANCE (FORM) Liquid
TITRATION (MOLARITY) 0.95 - 1.10 mol/l
DENSITY D20/4 1.035 - 1.047
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
ALUMINIUM (ICP) ≤ 1 mg/kg
BARIUM (ICP) ≤ 1 mg/kg
BISMUTH (ICP) ≤ 1 mg/kg
CALCIUM (ICP) ≤ 5 mg/kg
CADMIUM (ICP) ≤ 1 mg/kg
COBALT (ICP) ≤ 1 mg/kg
CHROMIUM (ICP) ≤ 1 mg/kg
COPPER (ICP) ≤ 1 mg/kg
IRON (ICP) ≤ 1 mg/kg
LITHIUM (ICP) ≤ 1 mg/kg
MAGNESIUM (ICP) ≤ 1 mg/kg
MANGANESE (ICP) ≤ 1 mg/kg
MOLYBDENUM (ICP) ≤ 1 mg/kg
SODIUM (ICP) ≤ 20 mg/kg
NICKEL (ICP) ≤ 1 mg/kg
LEAD (ICP) ≤ 1 mg/kg
STRONTIUM (ICP) ≤ 1 mg/kg
ZINC (ICP) ≤ 1 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 10 mg/kg
TOTAL NITROGEN ≤ 10 mg/kg
EXTRANEOUS ACTIVITIES DNAses, RNAses, Proteases, Phosphatases Not Detectable
SOLUBILITY (METHOD) NEAT
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) 5.0 - 8.0
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.02
UV - ABS. AT 280 NM ≤ 0.01
RECOMMENDED RETEST PERIOD 30 MONTHS