191D White Glaze
A low lead-bearing glossy white glaze for firing in conventional cycles at earthenware temperatures with excellent opacity. This glaze has a relatively low coefficient of thermal expansion.
Linear Expansion (20 - 500 C) x 10-7 : 56 +/- 2
1060 - 1180 C 12 - 24 hour cycle in oxidising conditions.
The lead content in this glaze is present in fritted form. The chemical elements present are :
Na2O, MgO, CaO, ZnO, PbO, Al2O3, B2O3, SiO2, ZrO2
The composition is considered to be proprietary information and is not for publication.
Approximate Added Lead % : 0.5
For information on this refer to the General Glaze Information Sheet.
A maximum of 1% dry residue retained on a 45 micron (325 mesh) sieve.
SAFETY AND HANDLING
This glaze is non-flammable but hazardous and care should be taken not to inhale dust particles generated during handling or application. Refer to the relevant Material Safety Data Sheet for more specific information on this subject.