Created by Glazy Admin 2015-07-16 06:59:40, updated 2015-08-11 04:40:07

Theoretical Material

Type: Flux

Weight: 0.0000
Formula Weight: 120.4571
LOI: 4.7500
Thermal Expansion: 0.0000
Oxide SiO2 MgO
% Analysis 63.38 31.87
Formula 1.334 1.000

Talc supplies SiO2, MgO, CaO, and small amounts of Na2O, Al2O3, Fe2O3, and MnO. TX talc is reported to be less gassy than NY talc. Talc is a magnesium silicate mineral with theoretical composition 3MgO 4SiO2 H2O. Rocks made of talc are also known as Soapstone or Steatite. The talc used by potters (tremolitic talc) is usually a mixture of the minerals Tremolite (2CaO 5MgO 8SiO2 H2O), Serpentine (3MgO 2SiO2 2H2O), and Talc (3MgO 4SiO2 H2O), in an approximately 2:1:1 ratio by weight. Talc is formed by a complex metamorphic process from quartzite and dolomite. The process occurs in several stages; each stage produces a later mineral in the sequence. New York talc is mined by R.T. Vanderbilt Co., Inc. in St. Lawrence County, NY. This talc was formed in the Precambrian (over 600 million years ago). Talc is a common flux in low-fire clay bodies, especially white clay bodies, and is used as a flux in stoneware glazes.
Analyses:
Obstler: (NYTAL 100HR 200 mesh)
% 0.34 Na2O 30.0 MgO 8.42 CaO 0.31 Al2O3 55.2 SiO2 0.16 Fe2O3 0.17 MnO 5.41 LOI
Obstler: (CERAMITALC No. 1 325 mesh)
% 0.18 Na2O 29.0 MgO 6.94 CaO 0.29 Al2O3 56.8 SiO2 0.20 Fe2O3 0.13 MnO 6.46 LOI
Hopper:
3 MgO 4 SiO2 H2O
Cooper & Royle:
3 MgO 4 SiO2 H2O
Cooper & Royle: (Harrison Mayer Ltd. 36.0.046)
% 33.40 MgO 0.42 CaO 0.15 Al2O3 58.30 SiO2
0.22 Fe2O3 7.33 LOI
Rhodes:
3 MgO 4 SiO2 H2O
Cuff:
3 MgO 4 SiO2 H2O
Chappell:
3 MgO 4 SiO2 H2O
Cushing:
3 MgO 4 SiO2 H2O
Memmott:
3 MgO 4 SiO2 H2O
Tichane (CB): (NY Talc)
% 30.4 MgO 8.0 CaO 1.1 Al2O3 56.6 SiO2 0.3 Fe2O3 3.5 LOI
Tichane (CB): (NC Talc)
% 34.2 MgO 0.6 CaO 5.8 Al2O3 50.2 SiO2 1.6 Fe2O3 7.5 LOI
IMC:
% 33.46 MgO 66.54 SiO2

Hazards

09/2016 Note: This is a new feature. If there is no safety information below, then that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
Harmful WARNING Causes mild skin irritation
Harmful if inhaled
May cause respiratory irritation
1 0 0 E

Recipes using this material

Name Amount of Talc (Theoretical) Temp. Atmospheres Surface Transparency Si:Al R20:RO Author
Orange Street 13.8 Δ6 Oxidation
9.22 0.18 : 0.82 mitch henke
WWW 237 M1 (variation) 16 Δ6 Oxidation
Neutral
Glossy Opaque 6.11 0.26 : 0.74 mitch henke
Shaner's Oribe 7.8 Δ9 - 10 Oxidation
Neutral
Reduction
Glossy Translucent 9.57 0.14 : 0.86 Sid Henderson
Sun Valley 9.45 Δ9 - 12 Reduction
Glossy Opaque 7.7 0.22 : 0.78 Mark Quinto
Guan Ice Crackle 14.31 Δ6 - 8 Oxidation
Semi-glossy Translucent 4.77 0.49 : 0.51 kenneth ibbett
Mandy's Celadon 9 Δ6 Oxidation
4.83 0.67 : 0.33 Ginger Lukas
Hobbs Peachbloom #1 2.3 Δ6 - 8 Reduction
Semi-glossy Semi-opaque 11.05 0.33 : 0.67 Ryan Hobbs
Hobbs Turquiose 2.3 Δ6 Oxidation
Glossy Translucent 10.85 0.33 : 0.67 Ryan Hobbs
Lewing Raspberry 8 Δ6 Oxidation
Glossy 10.77 0.16 : 0.84 Glazy Admin
WWW 518 8 Δ5½ - 7 Oxidation
Glossy Translucent 5.51 0.29 : 0.71 Daniel Spruyt
Naomi Duffy Red 14 Δ6 14.36 0.2 : 0.8 Ceramic Recipes
Honey Clear 13 Δ6 8.48 0.28 : 0.72 Glazy Admin
sankey iron red 10 Δ6 - 8 Oxidation
Semi-glossy Semi-opaque 7.85 0.36 : 0.64 kenneth ibbett
Sea Slug White 6.93 Δ10 Reduction
Salt & Soda
Wood
Semi-glossy Opaque 11.44 0.16 : 0.84 IU Southeast Ceramics
White Liner 17.2 Δ6 Oxidation
Semi-glossy Opaque 7.09 0.19 : 0.81 Jake Bish
WWW 237 M1 (variation) 14.1 Δ6 Oxidation
Neutral
Glossy Opaque 5.93 0.26 : 0.74 Triin Lehismets
Hill's White Modified 14.1 Δ6 Opaque 8.13 0.2 : 0.8 Ceramic Recipes
Red Soda 17 Δ6 - 7 Oxidation
Glossy Opaque 9.01 0.24 : 0.76 Tom Demeranville
chocolate Street (Toms UK variation) 11 Δ5 - 8 Oxidation
Semi-glossy Opaque 8.97 0.18 : 0.82 Tom Demeranville
chocolate orange Street (Toms UK variation) 11 Δ5 - 8 Oxidation
Semi-glossy Opaque 9.5 0.17 : 0.83 Tom Demeranville
Orange Street (Toms UK variation) 11.5 Δ5 - 8 Oxidation
Semi-glossy Opaque 10.33 0.17 : 0.83 Tom Demeranville
Black Pearl 2 Δ10 Oxidation
Neutral
Reduction
Glossy Opaque 7.44 0.71 : 0.29 Ken Potter
Lynette's Opal 5 Δ5 - 7 Oxidation
Glossy Semi-opaque 7.86 0.28 : 0.72 Triin Lehismets
Sonoran Crawler 20 Δ9 - 10 Oxidation
Neutral
Reduction
Satin-matte Opaque 5.15 0.1 : 0.9 Sid Henderson
EV's Blue 9 Δ5 - 7 Satin Opaque 8.58 0.22 : 0.78 Ceramic Recipes
MC6 Glossy Clear Liner Glaze 6 Δ6 Glossy Translucent 9.07 0.21 : 0.79 Ceramic Recipes
buttermilk 13.5 Δ10 - 12 Reduction
13.12 0.14 : 0.86 chance taylor
Watkin's ^6 Warm White Clay 3.5 Δ6 3.61 0.39 : 0.61 Ceramic Recipes
C6 OR1 16.9 Δ5½ - 6 Neutral
Semi-glossy Opaque 8.9 0.33 : 0.67 Daniel Spruyt
Bright Purple 5 Δ5 - 7 Oxidation
Satin-matte Semi-opaque 9.1 0.21 : 0.79 Jayne Bunting
Triin's Cherry Blossom Pink 4.3 Δ6 Oxidation
Satin Opaque 16.16 0.36 : 0.64 Triin Lehismets
Borate Iron Red (variation) 0.25 Al2O3 13.3 Δ4 Oxidation
12.43 0.2 : 0.8 Pieter Mostert
Cone 6 Whiteware/Porcelain Transparent Base Glaze - Plainsman 2.3 Δ6 Oxidation
Glossy Transparent 10.91 0.32 : 0.68 Marion Bon
Van Gilder's Tenmoku 17.2 Δ6 Oxidation
Glossy Opaque 8.77 0.33 : 0.67 Joe Thompson
Pale Celadon 3.5 Δ9 - 11 Reduction
Wood
6.25 0.2 : 0.8 Anglian Potters
Mo's White Shino 15 Δ10 Wood
Semi-glossy Semi-opaque 4.6 0.61 : 0.39 Anglian Potters
Marno Green 10 Δ10 Reduction
Wood
Semi-glossy Opaque 8.99 0.35 : 0.65 Anglian Potters
RDR Blue Grey UMF Redux low Si 12.44 Δ6 Oxidation
Glossy Opaque 6.79 0.31 : 0.69 Michael Barsanti
Satan Black 10 Δ5 - 6 Oxidation
Satin-matte Opaque 7.2 0.22 : 0.78 Sid Henderson
R71- Iron Yellowish (variation) 9 Δ5 - 6 Neutral
Satin-matte Opaque 7.58 0.21 : 0.79 Jayne Bunting