Strontium carbonate
Description
Strontium carbonate (CAS 1633-05-2), also identified under the colorant index reference CI 77837, is an inorganic mineral salt used across ceramics, electronics, and specialty chemical manufacturing.
It functions primarily as a strontium source in high-temperature processing and as a stabilizing or buffering agent in formulated systems. In the electronics industry, it is a key raw material for producing cathode ray tube glass.
Ferrite components also utilize this material, where controlled strontium content directly affects dielectric performance. Coatings formulators incorporate it as a corrosion-inhibiting pigment in anti-rust primers.
In these applications, it neutralizes acidic byproducts and passivates metal substrates. In plastics and polymer compounding, it acts as a heat and light stabilizer, extending service life in PVC and related systems.
Pharmaceutical and specialty chemical producers also use it as a catalyst precursor and pH-buffering agent. It is essential in various synthesis and processing applications requiring high chemical stability.
Strontium carbonate is supplied as a fine white powder in technical and high-purity grades. Particle size distribution varies by grade, with finer cuts available for electronic and coating applications.
Surface coverage and reactivity are critical factors in these specialized sectors. Standard packaging ranges from small bags to bulk quantities to suit both laboratory-scale and industrial procurement needs.
Physical Properties
| Melting Point | 1494 °C |
| Density | 3.5 g/cm³ |
| Appearance | Milky white free flowing powder |
| Color | white |
| Odor | Odorless |
| Form | Powder |
| Water Solubility | Soluble in ammonium chloride. Slightly soluble in ammonia and water. |
| Refractive Index | 1.518 |
| pH | 7-8 (20°C, 0.01g/L in H2O) |
| Log P | -0.809 (est) |
Trade & Regulatory
| HS Code | 2836920000 |
Documentation
Other Names
Carbonic acid, strontium salt (1:1)|Strontium carbonate (SrCO3)|CI 77837|41YPU4MMCA|Strontium monocarbonate
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