Specification Sheet
Product Name Sodium phosphate monobasic dihydrate,
BioUltra, for molecular biology, ≥99.0% (T)
Product Number 71505
Product Brand SIGMA
CAS Number 13472-35-0
Molecular Weight 156.01
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless or White
APPEARANCE (FORM) Powder or Crystals
TITRATION (T) NAOH 0.1M 99.0 - 101.0 %
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
ALUMINIUM (ICP) ≤ 5 mg/kg
BARIUM (ICP) ≤ 5 mg/kg
BISMUTH (ICP) ≤ 5 mg/kg
CALCIUM (ICP) ≤ 10 mg/kg
CADMIUM (ICP) ≤ 5 mg/kg
COBALT (ICP) ≤ 5 mg/kg
CHROMIUM (ICP) ≤ 5 mg/kg
COPPER (ICP) ≤ 5 mg/kg
IRON (ICP) ≤ 5 mg/kg
POTASSIUM (ICP) ≤ 200 mg/kg
LITHIUM (ICP) ≤ 5 mg/kg
MAGNESIUM (ICP) ≤ 5 mg/kg
MANGANESE (ICP) ≤ 5 mg/kg
MOLYBDENUM (ICP) ≤ 5 mg/kg
NICKEL (ICP) ≤ 5 mg/kg
LEAD (ICP) ≤ 5 mg/kg
STRONTIUM (ICP) ≤ 5 mg/kg
ZINC (ICP) ≤ 5 mg/kg
ARSENIC TRACES (MHS-AAS) ≤ 0.2 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 50 mg/kg
CHLORIDE (CL) ≤ 50 mg/kg
EXTRANEOUS ACTIVITIES DNAses, RNAses, Proteases, Phosphatases Not Detectable
SOLUBILITY (METHOD) 1M IN WATER
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) 4.0 - 4.5
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.085
UV - ABS. AT 280 NM ≤ 0.070
RECOMMENDED RETEST PERIOD 48 MONTHS