Specification Sheet
Product Name Sodium carbonate,
BioUltra, anhydrous, ≥99.5% (calc. on dry substance, T)
Product Number 71345
Product Brand SIGMA
CAS Number 497-19-8
Molecular Weight 105.99
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless or White
APPEARANCE (FORM) Powder or Crystals
TITRATION (T) HCL 1M 99.5 - 101.0 % (calc. to the dried substance)
LOSS ON DRYING ≤ 1.0 %
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
ALUMINIUM (ICP) ≤ 5 mg/kg
BARIUM (ICP) ≤ 5 mg/kg
BISMUTH (ICP) ≤ 5 mg/kg
CALCIUM (ICP) ≤ 50 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) ≤ 5 mg/kg
MAGNESIUM (ICP) ≤ 50 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) ≤ 0.1 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 50 mg/kg
VARIOUS GUARANTEE LABEL TRACES (ICP-OES) Phosphate, Silikate (as SiO(2)) ≤ 50 mg/kg
CHLORIDE (CL) ≤ 50 mg/kg
TOTAL NITROGEN ≤ 10 mg/kg
SOLUBILITY (METHOD) 1M water
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) ~ 12.0 25C
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.01
UV - ABS. AT 280 NM ≤ 0.01
RECOMMENDED RETEST PERIOD 72 MONTHS