Description

Sodium Sesquicarbonate is a versatile, high-purity inorganic compound, also known as trona. This material is valued for its dual functionality as a source of both carbonate and bicarbonate ions, offering a balanced alkalinity profile. It serves as a critical processing agent and pH buffer in several key industrial and consumer-facing sectors. Major applications include its use in detergent formulations, water treatment processes, and as a food additive.

Application

• Detergent & Cleaning Agent Manufacturing: Acts as a builder and water softener in powdered laundry and dishwashing detergents, enhancing cleaning efficiency.
• Water Treatment: Used for pH adjustment and alkalinity control in municipal and industrial water systems, including swimming pools.
• Food Industry (E500(iii)): Employed as a raising agent, acidity regulator, and anti-caking agent in baked goods and other food products.
• Animal Feed Supplement: Serves as a buffering agent in ruminant feed to support digestive health.
• Textile Processing: Utilized in wool scouring and dyeing processes as a mild alkaline agent.
• Leather Tanning: Functions in the deliming and neutralization stages of hide processing.
• Chemical Synthesis: Acts as a precursor or reagent in the production of other sodium salts and specialty chemicals.
• Personal Care Products: Found in effervescent bath products and certain oral care formulations.

Basic Information

Product Name	Sodium Sesquicarbonate
CAS No.	6106-20-3
Molecular Formula	Na2CO3·NaHCO3·2H2O
Molecular Weight	226.03 g/mol
Synonyms	Trona; Sodium Carbonate Sesquihydrate; Sodium Hydrogen Carbonate Carbonate Dihydrate; E500(iii); Food Additive 500(iii); Trisodium Hydrogen Dicarbonate Dihydrate; 2,5-Dioxatrispiro[3.1.3.1]decane-4,9-dione, sodium derivative
EINECS	228-056-2

Quality Control

Our Sodium Sesquicarbonate is manufactured under a strict quality management system. Each batch is tested to ensure it meets relevant specifications for industrial, food grade (FCC), or feed grade applications. We provide comprehensive Certificates of Analysis (COA) that detail purity, assay, and impurity profiles, ensuring traceability and compliance with your procurement standards.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent caking and degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as Na2CO3·NaHCO3·2H2O)	≥ 98.0 %
pH (1% solution)	9.5 - 10.5
Loss on Drying	≤ 15.0 %
Water Insoluble Matter	≤ 0.1 %
Chloride (as Cl)	≤ 0.1 %
Sulfate (as SO4)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm

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