Strontium carbonate powder CAS NO 1633-05-2 was used in making special glass and ceramic glazes

►Description

carbonate salt of strontium that has the appearance of a white or grey powder. It

occurs in nature as the mineral strontianite.

Strontium carbonate is often recommended as a substitute for barium to

produce matte glazes. Use about 75% as much and test first to make sure color

response is the same. However strontium is not a substitute for barium as a

precipitator of soluble salts in clay bodies because it combines with SO4-- ions in

the water to form a compound that is not nearly as insoluble as BaSO4.Viscous

zirconium silicate glazes can be smoothed with the addition of strontium carbonate.

Strontium is considered a safe material. Some people confuse SrO with

Strontium 90, an isotope released from atomic reactions; they are not the same

thing.

As noted, strontium carbonate produces gases as it decomposes and these

can cause pinholes or blisters in glazes (if they are being generated into a glaze

melt having a viscosity and surface tension that is unable to pass them or heal over

properly as they escape or one that simply does not have time because of quick

cooling). There are many strontium frits available and incorporating one of them to

source the SrO instead of raw strontium carbonate (a classic job for glaze

chemistry calculations). The resultant glaze will be more fusible and will have better

clarity and fewer defects. Strontium frits have become much more common of late

and are useful to producing brilliant transparent glazes without having a high

expansion (like those based on Na2O and K2O). Please read the information about

the oxide SrO to fully appreciate the value of SrO frits, not just as alternatives to

this material, but as excellent ways to produce brilliant glazes.

►Specification

►Application

Ceramic frits and glaze​

• Special glass

►Packing

25 kg /bag

►Notice

►Storage

No specific storage is required. Use shelves or cabinets sturdy enough to bear

the weight of the chemicals. Be sure that it is not necessary to strain to reach

materials, and that shelves are not overloaded.