Matthey Frit 3701F

Alternate Names: FRIT 3701 F, Frit 3701, Frit 3701F

Description: General purpose alkaline frit

Oxide	Analysis	Formula
Li2O	2.10%	0.26
K2O	3.30%	0.13
Na2O	10.10%	0.61
B2O3	37.80%	2.02
SiO2	46.60%	2.89
Oxide Weight		372.20
Formula Weight		372.20

Notes

Slightly soluble, this can be suppressed by addition of Blythe antycrystalising agent RM484 or by using Blythe frit 5009 which is more stable, but has a higher melting point.
Use this frit for introducing Na₂O into glaze formulas, as a binding agent for polishig disks, as a base for under glaze for reactive floor tile glazes

Blythe supplies the molecular weight: 373
and this partial formula:
1.00 NA+K₂O+LI2O
2.86 SiO₂
1.99 B₂O₃

and this analysis:
Na₂O / K₂O / Li₂O 16.6 %
SiO₂ 46%
B₂O₃ 37.3%

We have thus extrapolated this approximate formula:
SiO₂ 46.0
B₂O₃ 37.3
Na₂O 10.0
K₂O 3.3
Li₂O 2.00

Related Information

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Materials	Frit Frits are made by melting mixes of raw materials, quenching the melt in water, grinding the pebbles into a powder. Frits have chemistries raw materials cannot.
Typecodes	Frit A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types.

Data

Co-efficient of Linear Expansion	89x10-7
Frit Softening Point	950-1050C

By Tony Hansen
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