Specification Sheet
Product Name
Phosphotungstic acid hydrate suitable for microscopy
Product Number
79690
Product Brand
sial
CAS Number
12501-23-4
Molecular Weight
2880.05 (anhydrous basis)
Test | Specification |
|---|---|
| APPEARANCE (COLOR) | White to Off White |
| APPEARANCE (FORM) | Powder or Crystals |
| SOLUBILITY (COLOR) | Colorless |
| SOLUBILITY (TURBIDITY) | Clear |
| SOLUBILITY (METHOD) | 0.5G IN 10ML WATER |
| LOSS ON DRYING | ≤ 15 % |
| INFRARED SPECTRUM | CONFORMS TO STRUCTURE |
| CALCIUM TRACES (F-AAS) | ≤ 20 mg/kg |
| COPPER TRACES (F-AAS) | ≤ 5 mg/kg |
| IRON TRACES (F-AAS) | ≤ 20 mg/kg |
| POTASSIUM TRACES (F-AAS) | ≤ 50 mg/kg |
| SODIUM TRACES (F-AAS) | ≤ 50 mg/kg |
| LEAD TRACES (F-AAS) | ≤ 20 mg/kg |
| ZINC TRACES (F-AAS) | ≤ 5 mg/kg |
| CHLORIDE (CL) | ≤ 50 mg/kg |
| TOTAL NITROGEN | ≤ 20 mg/kg |
| SULFATE (SO4) | ≤ 100 mg/kg |
| RECOMMENDED RETEST PERIOD | 42 MONTHS |