Description

Celestite CAS NO 14291-02-2 is a naturally occurring mineral form of strontium sulfate (SrSO₄), valued for its high strontium content. This inorganic compound is a critical industrial raw material, prized for its chemical stability and specific gravity. It is essential for manufacturers in the ceramics, glass, pyrotechnics, and metallurgical industries seeking a reliable source of strontium.

Application

• Primary Raw Material for Strontium Carbonate Production: The predominant industrial use, where celestite is chemically converted to strontium carbonate, a key ingredient in specialty glass and ceramics.
• Ceramics and Glazes: Used to produce strontium compounds that act as fluxing agents in ceramic glazes and frits, enhancing brightness, durability, and color stability.
• Electronics and Cathode Ray Tubes (CRTs): Historically vital for manufacturing glass for television and monitor screens to block X-ray emission; still used in certain specialty glass applications.
• Pyrotechnics and Signal Flares: Provides the brilliant red color in fireworks and emergency flares due to the characteristic crimson flame of strontium ions.
• Metal Alloying: Employed in the production of aluminum-strontium master alloys for grain refinement and modification in aluminum casting.
• Pigments and Fillers: Ground celestite can be used as a white pigment or functional filler in paints, plastics, and rubber compounds.
• Drilling Fluids: High-density celestite (as barite substitute) is used as a weighting agent in oil and gas well drilling muds.

Basic Information

Product Name	Celestite
CAS No.	14291-02-2
Molecular Formula	SrSO₄
Molecular Weight	183.68 g/mol
Synonyms	Celestine; Strontium Sulfate; Strontium Sulphate; Coelestin; Sulfuric Acid, Strontium Salt (1:1); Strontium(II) Sulfate; Natural Strontium Sulfate
EINECS	238-858-9

Quality Control

Our Celestite is sourced and processed under strict quality protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through a series of analytical tests including X-ray diffraction (XRD) for mineral identification and phase purity, as well as assays for strontium sulfate content and key impurity limits. Certificates of Analysis (COA) detailing lot-specific results are available upon request to support your quality assurance and regulatory needs.

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 away from incompatible materials. Protect from physical damage and excessive moisture to prevent caking.

Specification

Item	Specification
Appearance	White to pale blue crystalline solid or powder
Identification (XRD)	Complies (Strontium Sulfate pattern)
Assay (as SrSO₄)	≥ 96.0 %
Strontium (Sr) Content	≥ 47.0 %
Barium (as BaSO₄)	≤ 2.0 %
Calcium (as Ca)	≤ 0.5 %
Iron (Fe)	≤ 0.1 %
Lead (Pb)	≤ 10 ppm
Moisture (Loss on Drying)	≤ 1.0 %
Particle Size (Typical)	Contact for details

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