Specification Sheet
Product Name Sodium phosphate dibasic,
puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)
Product Number 71640
Product Brand SIGALD
CAS Number 7558-79-4
Molecular Weight 141.96
 
TEST SPECIFICATION
APPEARANCE (COLOR) Colorless or White
APPEARANCE (FORM) Powder or Crystals
TITRATION 99.0 - 101.0 %
TITRATION (METHOD) BACK TITRATION
INSOLUBLE MATTER ≤ 0.01 %
SOLUBILITY (COLOR) Colorless
SOLUBILITY (TURBIDITY) Clear
SOLUBILITY (METHOD) 25C water 50mg/mL
PH 8.7 - 9.3
LOSS ON DRYING ≤ 0.2% 105C
ACS SPECIFICATIONS Meets current ACS Requirements
METAL TRACE ANALYSIS (ICP) CORRESPONDS TO REQUIREMENTS
ARSENIC (ICP) ≤ 1 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) ≤ 50 mg/kg
MAGNESIUM (ICP) ≤ 5 mg/kg
MANGANESE (ICP) ≤ 5 mg/kg
NICKEL (ICP) ≤ 5 mg/kg
LEAD (ICP) ≤ 2 mg/kg
ZINC (ICP) ≤ 5 mg/kg
TOTAL SULFUR AS SO4 (ICP) ≤ 50 mg/kg
Heavy metals (by ICP-OES) ≤ 10 mg/kg
CHLORIDE (CL) ≤ 10 mg/kg
TOTAL NITROGEN ≤ 10 mg/kg
RECOMMENDED RETEST PERIOD 42 Months