Soda Ash Light (99,2%) - China

Origin
China
CAS Number
497-19-8
HS Code
2836.20.00

Basic Info

IUPAC Name
disodium carbonate
Molecular Formula
Na2CO3
Molecular Weight (g/mol)
105.9900
Synonyms & Trade Names
Soda ash light; Sodium carbonate; Washing soda; E500ii
Purity / Assay (%)
99.2% min
Physical Form
Solid
Concentration
Pure substance
Appearance / Color
White to off-white solid
Odor
Odorless
Melting Point (°C)
851.0000
Density (g/cm³)
2.5320
Solubility in Water
Freely soluble (21.6g/100mL at 20°C)
Signal Word
Warning
GHS Hazard Class
Skin irritant; Eye irritant; Respiratory irritant
H-Statements
H302|H319|H335
P-Statements
P260|P261|P264|P270|P271|P280|P305+P351+P338
REACH Status
Registered
Drug Precursor Status
Non-precursor
Storage Class (GHS)
10
Storage Conditions
Cool, dry; sealed; avoid moisture

Categories

Technical Document

Brief Overview
Soda ash is available in three different grades, namely dense soda ash, light soda ash, and washing soda. Soda ash light is also called an anhydrous sodium carbonate with the chemical formula Na2CO3. It is a white, odorless granular powder soluble in water and forms a strongly alkaline aqueous solution. It is also hygroscopic and absorbs moisture from the atmosphere, causing it to clump together. It exists mainly in its monohydrate form but in the decahydrate and heptahydrate forms.
Soda ash light sources spontaneously form from sodium deposits, and sodium deposits have undergone long-term geological processes such as igneous rock erosion, sodium sediment transport, and chemical reactions. Under weathering, sodium deposits are first released from igneous rocks. Then they were washed off, flowed down, and collected in the basin. When exposed to carbon dioxide, it produces soda ash.
Manufacturing Process
Solvay Process
In 1861, Belgian chemist Ernest Solvay developed the Solvay process, a more efficient method to convert sodium chloride to soda ash light. In the Solvay process, ammonia reacts with sodium chloride with the aid of calcium carbonate. Sodium bicarbonate is produced, and it is then heated and converted to soda ash light.
Hou Process.
In 1930, Chinese chemist Hou Debang developed the Hou process. In this process, carbon dioxide is pumped through a saturated solution of sodium chloride and ammonia to form sodium bicarbonate. The precipitated sodium bicarbonate is then heated, yielding pure soda ash. The Hou process is a modified version of the Solvay process, and the commonly used method is still the Solvay process.