Sodium acetate trihydrate
【Another name】sodium acetate；sodium acetate crystal.
【Description】colorless transparent crystal or white particles, weathering in dry air, relative density 1.45, melting point 58℃, 123℃ lose all water of crystal, decomposition at high temperature. Soluble in water, aqueous solution is alkaline.
|
Test items |
GR |
AR |
CP |
Other |
|
Assay(C2H3NaO2•3H2O) /% |
≥99.5 |
≥99.0 |
≥98.0 |
Costom |
|
pH(50g/L,25℃) |
7.5-9.0 |
7.5-9.0 |
7.5-9.0 |
|
|
Clarity of solution |
Passes test | Passes test | Passes test | |
|
Water insoluble /% |
≤0.002 |
≤0.002 |
≤0.005 |
|
| Chloride(Cl) /% |
≤0.000 3 |
≤0.001 |
≤0.003 |
|
| Sulfate(SO4) /% |
≤0.002 |
≤0.005 |
≤0.005 |
|
| Phosphate(PO4) /% |
≤0.000 2 |
≤0.000 2 |
≤0.000 5 |
|
| Aluminum(Al) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
|
| Potassium(K) /% |
≤0.002 |
- |
- |
|
| Calcium(Ca) /% |
≤0.001 |
≤0.002 |
≤0.005 |
|
| Iron(Fe) /% |
≤0.000 2 |
≤0.000 2 |
≤0.000 5 |
|
|
Copper(Cu) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
|
|
Plumbum(Pb) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
|
|
Reduced potassium permanganate substance(as HCOOH) /% |
≤0.005 |
≤0.01 |
≤0.02 |
【Use】used as analytical reagent; mordants; dye synthesis; preparation of acetic anhydride; food additives; pharmaceutical excipients; photographic agent.