Sodium Carbonate

ALTERNATIVE NAMES
Soda Ash, Washing Soda
TECHNICAL SPECIFICATIONS
CAS
497-19-8
EC
207-838-8
Food Code
E500

Sodium carbonate, or soda ash, is a white, hygroscopic powder or granules with formula Na2CO3 and molecular weight 105.99 g/mol. Density 2.54 g/cm³ (anhydrous), melting point 851°C, decomposes before boiling. Soluble in water (215 g/L at 20°C), forming alkaline solutions pH 11-12; insoluble in organics. Absorbs moisture and CO2 from air. Exists as anhydrous, monohydrate, or decahydrate; produced via Solvay process from NaCl and limestone.

Sodium Carbonate

In glass production, detergents, water softening, pH control in mining, effervescent tablets, and food as acidity regulator.

Irritates eyes; mildly toxic if ingested. GRAS by FDA/EPA; avoid acids to prevent CO2 release. Not hazardous for transport.

In 25-50kg bags or bulk supersacks. Store dry to avoid caking.

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