Description

Sodium Antimonate is an important inorganic compound widely used as a high-performance opacifier and fining agent in the glass and ceramics industries. Its primary value lies in its ability to effectively eliminate bubbles and impart a brilliant white, opaque finish to glassware, ceramic glazes, and vitreous enamels. This makes it a critical raw material for manufacturers of high-quality tableware, architectural glass, and specialty ceramic products who require consistent clarity, color, and structural integrity.

Application

• As a primary opacifying agent in the production of opaque glass, such as tableware and decorative glass items.
• As a fining agent in glass melting to remove gaseous inclusions (bubbles) and improve homogeneity.
• In the formulation of ceramic glazes and vitreous enamels to achieve bright white opacity and smooth surface finishes.
• As a flame retardant synergist in certain polymer and textile applications, often combined with halogenated compounds.
• In the manufacturing of pigments and ceramic colors.
• As a source of antimony in various chemical synthesis processes.

Basic Information

Product Name	Sodium Antimonate
CAS No.	20602-01-1
Molecular Formula	NaSbO₃
Molecular Weight	192.74 g/mol
Synonyms	Antimonic acid (HSbO₃), sodium salt; Sodium metaantimonate; Antimony sodium oxide; Sodium hexahydroxyantimonate; Sodium stibate; Sodium antimonate(V); KS (ceramic industry code); Opacifier KS
EINECS	243-901-0

Quality Control

Our Sodium Antimonate is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a series of analytical tests including assay (Sb₂O₅ content), particle size distribution, and impurity profiling. A Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture. Separate from strong acids and reducing agents.

Specification

Item	Specification
Appearance	White fine powder
Assay (as Sb₂O₅)	≥ 98.5 %
Na₂O Content	12 - 14 %
Iron (Fe)	≤ 0.01 %
Lead (Pb)	≤ 0.01 %
Arsenic (As)	≤ 0.01 %
Particle Size (-325 mesh)	≥ 99 %
Loss on Drying (105°C)	≤ 0.5 %

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