1 2

Decopot Limited

Nepheline Syenite 22% alumina 200#

Nepheline Syenite 22% alumina 200#

$24.90 NZD
$24.90 NZD
Sale Sold out
Tax included. Shipping calculated at checkout.
Size

Nepheline Syenite is an anhydrous sodium potassium alumino-silicate. This material has a big advantage over feldspar: It does not contain quartz.

Because of its sodium content, high nepheline syenite glazes tend to craze (because of the high thermal expansion of Na2O). Also, since nepheline syenite has more alumina than most feldspars, substituting it into recipes means that on one hand a lower melting temperature is achieved while on the other a more viscous melt results because of the extra alumina.

The current version of Nepheline Syenite imported by Abbots is 200# and may promote matte effects in glazes.

Oxide

Analysis

CaO

0.17

MgO

1.26

K2O

4.25

Na2O

8.76

TiO2

0.03

Al2O3

21.63

SiO2

59.72

Fe2O3

0.28

 

 

LOI

3.9

Calculated Thermal Expansion 8.7

 

 

Ratios

 

Si:Al Ratio:

4.7:1

Alkali Ratio:

0.8:0.2

Shipping

Goods to be shipped within New Zealand via our carrier PBT

Returns

We have a 30-day return policy.

View full details

  • Create an Account for more

    To get discounts create an account with us!

  • Want to know more

    Get in touch and we will help you find what you are after