Specification Sheet
Product Name Sodium sulfate,
BioUltra, anhydrous, ≥99.0% (T)
Product Number 71959
Product Brand SIGMA
CAS Number 7757-82-6
Molecular Weight 142.04
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless or White
APPEARANCE (FORM) Powder or Crystals
TITRATION (ION EXCHANGE) 99.0 - 101.0 %
LOSS ON IGNITION ≤ 0.2 % 900 C
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
ALUMINIUM (ICP) ≤ 5 mg/kg
BARIUM (ICP) ≤ 5 mg/kg
BISMUTH (ICP) ≤ 5 mg/kg
CALCIUM (ICP) ≤ 20 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) ≤ 100 mg/kg
LITHIUM (ICP) ≤ 5 mg/kg
MAGNESIUM (ICP) ≤ 20 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) ≤ 1 mg/kg
CHLORIDE (CL) ≤ 10 mg/kg
TOTAL NITROGEN ≤ 5 mg/kg
PHOSPHATE (PO4) ≤ 20 mg/kg
SOLUBILITY (METHOD) Water 1M
APPEARANCE (SOLUTION) CLEAR COLORLESS
PH (SOLUTION) 5.0 - 7.5
RESIDUE (FILTER TEST) NO RESIDUE
UV - ABS. AT 260 NM ≤ 0.020
UV - ABS. AT 280 NM ≤ 0.018
RECOMMENDED RETEST PERIOD 72 MONTHS