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Sodium Carbonate

  • Sodium Carbonate
  • Sodium Carbonate
  • Sodium Carbonate
  • Sodium Carbonate

Sodium Carbonate

CAS No.: 497-19-8
Molecular Formula: CNa2O3
Molecular Weight: 105.99
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Product Description

Sodium Carbonate, also called soda ash, is a white crystalline powder, soluble in water and strongly alkaline. It is widely used in glass manufacturing, detergents, chemical production, metallurgy, papermaking, water treatment, and building materials.


Chemical Properties

PropertyValue
Melting Point851 °C (lit.)
Boiling Point1600°C
Bulk Density1100 kg/m³
Density2.53
Refractive Index1.535
Storage Condition15-25°C
SolubilityH₂O: 1 M at 20 °C, clear, colorless
FormSolid
ColorWhite
Specific Gravity2.532
Flame ColorYellow
OdorOdorless
pH Value10.52 (1 mM solution); 10.97 (10 mM solution); 11.26 (100 mM solution)
Acidity Coefficient (pKa)(1) 6.37, (2) 10.25 (carbonic at 25°C)
Water Solubility22 g/100 mL (20 °C)
Maximum Wavelength (λ_max)λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
SensitivityHygroscopic
Merck14,8596
BRN4154566
Dielectric Constant5.3 (Ambient)
StabilityStable. Incompatible with powdered or earth metals, aluminum, organosilicon compounds, fluorine, alkali metals, non-metal oxides, concentrated sulfuric acid, phosphorus oxides.
Cosmetic Ingredient FunctionBuffering, Bulking
InChI1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
InChIKeyCDBYLPFSWZWQCE-UHFFFAOYSA-L
SMILESO=C(O[Na])O[Na]
CAS Database497-19-8 (CAS DataBase Reference)
NIST Chemical Substances InformationSodium carbonate (497-19-8)
EPA Chemical Substances InformationSodium carbonate (497-19-8)

Safety Information

PropertyValue
Hazard symbolsXn, Xi
Hazard class codes32-36-51/53-36/37/38-41-37/38
Safety descriptions36/37-26-22-36-39
WGK Germany2
RTECS numberXN6476000
F3
TSCATSCA listed
HS code28362000
Storage class11 - Combustible solids
Hazard class (category)Eye irritation, Category 2
Hazardous substances data497-19-8 (Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 4090 mg/kg


Product Usage

Sodium Carbonate, commonly known as Soda Ash, is a vital basic chemical raw material. In glass manufacturing, it is the most essential ingredient, used to reduce the melting point of silica sand to save energy, with about half of global production dedicated to this sector. In the detergent industry, soda ash acts as a builder to effectively soften hard water and enhance cleaning performance, widely used in the production of laundry powders and soaps. Additionally, it is utilized in metallurgy for the desulfurization and dephosphorization of ores, and in the paper and textile industries for degreasing and bleaching fibers. In environmental protection, it is frequently employed to neutralize acidic wastewater and regulate the pH levels of water systems.

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Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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