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CAS No.: | 533-96-0 |
---|---|
Name: | SODIUM SESQUICARBONATE DIHYDRATE |
Molecular Structure: | |
Formula: | CH2 O3 . 3/2 Na |
Molecular Weight: | 193.03 |
Synonyms: | MagadiSoda; SQ 810; SQ 810 Bulk; Sesqui TM; Snowflake crystals; Sodiumsesquicarbonate; Solvay T 200 |
EINECS: | 208-580-9 |
Density: | 2.112 |
Solubility: | 213.6g/L at 20℃ |
Hazard Symbols: | Irritant to tissue. |
Safety: | A nuisance dust. |
PSA: | 123.55000 |
LogP: | -3.55930 |
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MF: Na2CO3.NaHCO3
EINECS: 208-580-9
Systematic name trisodium hydrogendicarbonate
Sodium sesquicarbonate is a double salt of sodium bicarbonate and sodium carbonate, it has a needle-like crystal structure.
The dihydrate is Na3H(CO3)2·2H2O, occurs in nature as the evaporite mineral trona.
Sodium sesquicarbonate can be used in following fields:
1.Bath salts, swimming pools and as an alkalinity source for water treatment.
2. used in the archaeological :conservation of objects made of copper and copper alloys that have been corroded by salt water. Treatment with sodium sesquicarbonate removes copper chlorides from the corroded layer; if these were not removed the object would continue to corrode ("copper disease") while exposed to air.
3. used as a precipitating water softener, it can combine with hard water minerals to form an insoluble precipitate, removing these hardness minerals from the water.