Description

Sodium Sesquicarbonate is a versatile inorganic compound, a double salt of sodium carbonate and sodium bicarbonate. It serves as a highly effective, mild alkaline agent and buffering compound, valued for its stability and controlled reactivity. This product is essential for manufacturers in the detergent, water treatment, textile, and food processing industries seeking a reliable and efficient source of alkalinity.

Application

• Detergent & Cleaning Formulations: Acts as a builder and water softener in powdered laundry detergents, dishwashing compounds, and industrial cleaners, enhancing cleaning efficiency.
• Water Treatment: Used for pH adjustment, alkalinity control, and as a precipitating agent for hardness ions in boiler water and industrial process water systems.
• Textile Processing: Employed in wool scouring and textile dyeing processes as a mild alkali to neutralize acids and condition fibers.
• Food Industry: Functions as a processing aid, acidity regulator, and raising agent in certain food applications, often where a controlled release of carbon dioxide is needed.
• Swimming Pool & Spa Treatment: Serves as a pH buffer and alkalinity increaser to maintain stable and comfortable water chemistry.
• Leather Tanning: Used in the deliming and neutralization stages to adjust pH and prepare hides for further processing.
• Chemical Intermediate: A precursor in the production of other sodium salts and specialty chemicals.

Basic Information

Product Name	Sodium Sesquicarbonate
CAS No.	533-96-0
Molecular Formula	Na2CO3·NaHCO3·2H2O
Molecular Weight	226.03 g/mol
Synonyms	Trona (mineral form); Sodium Carbonate Sesquihydrate; Sodium Hydrogen Carbonate Carbonate Dihydrate; 2,4-Dioxa-1,5-diasodium-pentane-1,5-diolate; Sodium Bicarbonate Carbonate Dihydrate; Bicarbonate of Soda and Soda Ash Compound; Sodium Sesquicarbonate Dihydrate
EINECS	208-580-9

Quality Control

Our Sodium Sesquicarbonate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications for industrial applications. While we offer standard technical and food-grade qualities, Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after initial opening to prevent caking and degradation due to atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as Na2CO3·NaHCO3·2H2O)	≥ 98.0 %
Loss on Drying	≤ 15.0 %
pH (1% solution)	9.5 - 10.5
Water Insoluble Matter	≤ 0.1 %
Chloride (as Cl)	≤ 0.1 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.