SODIUM CARBONATE ANHYDROUS (SODA ASH LIGHT)
Posted On: 10 Dec,2022
Chemical name: Sodium Carbonate Anhydrous
CAS No.: 497-19-8
Molecular formula: Na2CO3
Standard executed: GB/T210.2-2004
Packaging: in 40KG/50KG/750KG PP woven bag with PE liner
Technical specification
| Items | Standards: TOP | Standards: 1st | Standards: 2nd |
|---|---|---|---|
|
Purity (Na2CO3),% dry
|
≥99.2
|
≥98.8
|
≥98.0
|
|
Purity (Na2CO3),% wet
|
≥97.9
|
≥97.5
|
≥96.7
|
|
NaCl content, %
|
≤0.7
|
≤0.9
|
≤1.2
|
|
Ferric (Fe) content, %
|
≤0.0035
|
≤0.006
|
≤0.01
|
|
Sulphates (SO4) content, %
|
≤0.03
|
---
|
---
|
|
Water-insoluble matter content, %
|
≤0.03
|
≤0.1
|
≤0.15
|
|
Melting point
|
851 °C (1,564°F; 1,124 °K) in standard state (at 25 ℃[77 °F], 100 kPa)
|
851 °C (1,564°F; 1,124 °K) in standard state (at 25 ℃[77 °F], 100 kPa)
|
851 °C (1,564°F; 1,124 °K) in standard state (at 25 ℃[77 °F], 100 kPa)
|
|
Boiling point
|
1600℃
|
1600℃
|
1600℃
|
|
Density
|
2.54g/cm3 (25 ℃) in standard state (at 25 ℃[77 °F], 100 kPa)
|
2.54g/cm3 (25 ℃) in standard state (at 25 ℃[77 °F], 100 kPa)
|
2.54g/cm3 (25 ℃) in standard state (at 25 ℃[77 °F], 100 kPa)
|
|
Refractive index (nD)
|
1.485 in standard state (at 25 ℃[77 °F], 100 kPa)
|
1.485 in standard state (at 25 ℃[77 °F], 100 kPa)
|
1.485 in standard state (at 25 ℃[77 °F], 100 kPa)
|
|
Water solubility
|
Freely soluble in water
|
Freely soluble in water
|
Freely soluble in water
|
|
Specific gravity
|
2.532
|
2.532
|
2.532
|
|
pH
|
Aqueous solutions are strongly alkaline. At 25℃, the PH of 1, 5 and 10 wt% sodium carbonate solutions are 11.37, 11.58 and 11.70, respectively.
|
Aqueous solutions are strongly alkaline. At 25℃, the PH of 1, 5 and 10 wt% sodium carbonate solutions are 11.37, 11.58 and 11.70, respectively.
|
Aqueous solutions are strongly alkaline. At 25℃, the PH of 1, 5 and 10 wt% sodium carbonate solutions are 11.37, 11.58 and 11.70, respectively.
|
|
Sensitivity
|
Hygroscopic
|
Hygroscopic
|
Hygroscopic
|
|
Stability
|
Stable
|
Stable
|
Stable
|
|
Storage
|
Dry, tight-closed, in a dry and cool place
|
Dry, tight-closed, in a dry and cool place
|
Dry, tight-closed, in a dry and cool place
|
|
Shelf life/Retest
|
24 months
|
24 months
|
24 months
|
|
Appearance
|
White, odorless powder
|
White, odorless powder
|
White, odorless powder
|