Specification Sheet
Product Name Calcium chloride dihydrate,
BioUltra, for molecular biology, ≥99.5% (KT)
Product Number 21097
Product Brand SIGMA
CAS Number 10035-04-8
Molecular Weight 147.01
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless or White
APPEARANCE (FORM) Powder or Crystals
TITRATION (KT) EDTA 0.1M 99.5 - 102.0 %
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
BARIUM (ICP) ≤ 5 mg/kg
BISMUTH (ICP) ≤ 5 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) ≤ 50 mg/kg
LITHIUM (ICP) ≤ 20 mg/kg
MAGNESIUM (ICP) ≤ 50 mg/kg
MANGANESE (ICP) ≤ 5 mg/kg
MOLYBDENUM (ICP) ≤ 5 mg/kg
SODIUM (ICP) ≤ 100 mg/kg
NICKEL (ICP) ≤ 5 mg/kg
LEAD (ICP) ≤ 5 mg/kg
STRONTIUM (ICP) ≤ 100 mg/kg
ZINC (ICP) ≤ 5 mg/kg
ARSENIC TRACES (MHS-AAS) ≤ 0.1 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 50 mg/kg
TOTAL NITROGEN ≤ 20 mg/kg
EXTRANEOUS ACTIVITIES DNAses, RNAses, Proteases, Phosphatases Not Detectable
SOLUBILITY (METHOD) 1M IN H2O
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) 5.0 - 8.0
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.015
UV - ABS. AT 280 NM ≤ 0.012
RECOMMENDED RETEST PERIOD 72 MONTHS