Specification Sheet

Product Name
Ammonium iron(II) sulfate hexahydrate BioUltra, ≥99.0% (RT)

Product Number
09719

Product Brand
SIAL

CAS Number
7783-85-9

Molecular Weight
392.14

Test

Specification

APPEARANCE (COLOR)WHITE TO FAINTLY GREEN OR FAINTLY GREENISH-BLUE
APPEARANCE (FORM)Powder or Crystals
REDOX TITRATION99.0 - 101.0 %
REDOXTITRATION (METHOD)PERMANGANATE TITRATION
METAL TRACE ANALYSIS (ICP)CORRESPONDS TO REQUIREMENTS
CADMIUM (ICP)≤ 5 mg/kg
COBALT (ICP)≤ 50 mg/kg
CHROMIUM (ICP)≤ 50 mg/kg
COPPER (ICP)≤ 5 mg/kg
POTASSIUM (ICP)≤ 50 mg/kg
MAGNESIUM (ICP)≤ 100 mg/kg
MANGANESE (ICP)≤ 500 mg/kg
SODIUM (ICP)≤ 50 mg/kg
NICKEL (ICP)≤ 100 mg/kg
LEAD (ICP)≤ 5 mg/kg
STRONTIUM (ICP)≤ 5 mg/kg
ZINC (ICP)≤ 5 mg/kg
CHLORIDE (CL)≤ 10 mg/kg
PHOSPHATE (PO4)≤ 20 mg/kg
FERRIC IRON≤ 50 mg/kg
SOLUBILITY (METHOD)water 0.5M
APPEARANCE (SOLUTION)CLEAR FAINTLY GREEN-YELLOW TO FAINTLY GREEN-BLUE
PH (SOLUTION)2.5 - 4.0
RESIDUE (FILTER TEST)NO RESIDUE
RECOMMENDED RETEST PERIOD72 MONTHS