Análisis de Cenizas Vegetales

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    Cenizas vegetalesAnálisis químicos de distintas especies

    Esta base de datos contiene distintos análisis de cenizas vegetales y muestra suscomposiciones notoriamente variables según la especie y origen. . 

    2016 

    Horacio Ernesto González

    De GlazeChem

    29/04/2016

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    Base de datos que contiene los análisis de las cenizas vegetales

    Apple wood ash

    Type: ash

    Formula: % 1.9 Na2O 11.8 K2O 5.5 MgO 70.9 CaO 2.7 SiO2 4.5 P2O5 2.7 SO3

    Molecular Wt.: 100.0Apple wood ash supplies several oxides, especially CaO.

    Notes:

    Analyses:

    Cardew:% 1.9 Na2O 11.8 K2O 5.5 MgO 70.9 CaO 2.7 SiO2 4.5 P2O5 2.7 SO3

    (B.C.S., 58 (1959), 59P).

    Recalculated on 'washed' basis:

    % 6.37 MgO 82.16 CaO 3.13 SiO2 5.21 P2O5 3.13 SO3

    Conrad: (adds to 105%)

    % 4.9 Na2O 0.89 K2O 3.25 MgO 54.2 CaO 1.98 Al2O3 2.65 SiO2 1.6 P2O5 0.7 Fe2O3 34.7 MnO

    Rogers:

    % 10.45 Na2O 19.24 K2O 7.46 MgO 63.6 CaO 1.31 SiO2 4.9 P2O5 1.66 Fe2O3 0.93 SO3 0.45 Cl

    Hamer & Hamer:

    % 6 Na2O 15 K2O 6 MgO 65 CaO 2 SiO2 5 P2O5 1 Fe2O3

    Ash wood ash

    Type: ash

    Formula: % 8 Na2O 17 K2O 12 MgO 27 CaO 1 Al2O3 24 SiO2 7 P2O5 4 Fe2O3

    Molecular Wt.: 100.0

    Ash wood ash supplies several oxides, especially CaO and SiO2.

    Notes:

    Analyses:

    Hamer & Hamer:

    % 8 Na2O 17 K2O 12 MgO 27 CaO 1 Al2O3 24 SiO2 7 P2O5 4 Fe2O3

    Bamboo ash

    Type: ash

    Formula: % 4.8 K2O 0.3 CaO 86.4 SiO2 0.4 Fe2O3 8.1 LOI

    Molecular Wt.: 100.0

    Bamboo ash supplies several oxides, especially SiO2.

    Notes:

    Analyses:

    Cardew:

    % 4.8 K2O 0.3 CaO 86.4 SiO2 0.4 Fe2O3 8.1 LOI

    ('Bamboo sugar', Java)

    (Bourry, 1st English edition, 1901)

    Barley straw ash

    Type: ash

    Formula: % 5 Na2O 22 K2O 3 MgO 8 CaO 57 SiO2 5 P2O5

    Molecular Wt.: 100.0

    Barley straw ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:

    Hamer & Hamer:

    % 5 Na2O 22 K2O 3 MgO 8 CaO 57 SiO2 5 P2O5

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    Beech ash 

    Type: ash

    Formula: % 8.34 Na2O 24.29 K2O 8.20 MgO 42.00 CaO 3.01 SiO2 6.2 P2O5 0.62 Fe2O3 4.52 MnO 2.10 SO3

    0.72 Cl

    Molecular Wt.: 100.0

    Beech ash supplies several oxides, especially CaO and K2O.

    Notes:

    Analyses:Rogers:

    % 8.34 Na2O 24.29 K2O 8.20 MgO 42.00 CaO 3.01 SiO2 6.2 P2O5 0.62 Fe2O3 4.52 MnO 2.10 SO3 0.72 Cl

    Rogers (appendix):

    % 4.0 Na2O 16.5 K2O 10.9 MgO 55.5 CaO 5.45 SiO2 5.45 P2O5 1.0 Fe2O3

    Birch ash

    Type: ash

    Formula: % 9 Na2O 22.6 K2O 14.3 MgO 29.6 CaO 11.5 SiO2 7.9 P2O5 1.3 Fe2O3 0.4 MnO 3.4 LOI

    Molecular Wt.: 100.0

    Birch ash supplies several oxides, especially CaO and K2O.Notes:

    Analyses:

    Conrad:

    % 9 Na2O 22.6 K2O 14.3 MgO 29.6 CaO 11.5 SiO2 7.9 P2O5 1.3 Fe2O3 0.4 MnO

    Rogers (appendix):

    % 7.69 Na2O 12.53 K2O 7.69 MgO 57.5 CaO 3.84 SiO2 7.69 P2O5 1.0 Fe2O3

    Hamer & Hamer:

    % 9 Na2O 18 K2O 11 MgO 45 CaO 4 Al2O3 8 SiO2 4 P2O5 1 Fe2O3

    Cedar ash

    Type: ashFormula: % 3.7 Na2O 4.3 K2O 6 MgO 44.2 CaO 0.52 Al2O3 24.28

    SiO2 10.6 P2O5 1.01 Fe2O3 0.3 MnO 5.09 LOI

    Molecular Wt.: 100.0

    Cedar ash supplies several oxides, especially CaO and SiO2.

    Notes:

    Analyses:

    Conrad:

    % 3.7 Na2O 4.3 K2O 6 MgO 44.2 CaO 0.52 Al2O3 24.28 SiO2 10.6 P2O5 1.01 Fe2O3 0.3 MnO

    Cherry ashType: ash

    Formula: % 1.8 Na2O 21.6 K2O 8.7 MgO 30.3 CaO 24.96 SiO2 7.6 P2O5 2.62 Fe2O3 2.42 LOI

    Molecular Wt.: 100.0

    Cherry ash supplies several oxides, especially CaO, SiO2, and K2O.

    Notes:

    Analyses:

    Conrad:

    % 1.8 Na2O 21.6 K2O 8.7 MgO 30.3 CaO 24.96 SiO2 7.6 P2O5 2.62 Fe2O3

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    Coal ash

    Type: ash

    Formula: 0.24 KNaO 0.20 MgO 0.55 CaO 1.04 Al2O3 3.33 SiO2 0.8 TiO2 0.36 Fe2O3

    Molecular Wt.: 485.2

    Coal ash supplies several oxides, especially SiO2, Al2O3,

    TiO2, and Fe2O3.

    Notes:

    Sulfur content of some coals may cause difficulties.Analyses:

    Green: (from Bennett and Hawley, "Methods of Silicate Analysis" 1965)

    0.24 KNaO 0.20 MgO 0.55 CaO 1.04 Al2O3 3.33 SiO2 0.8 TiO2 0.36 Fe2O3

    Common ash 

    Type: ash

    Formula: % 2.33 Na2O 3.91 K2O 3.3 MgO 22.42 CaO 8.91 Al2O3 30.99 SiO2 1.91 P2O5 3.04 Fe2O3 1.26

    MnO 21.44 LOI

    Molecular Wt.: 99.5

    Common ash supplies several oxides, especially SiO2 and CaO.Notes:

    Analyses:

    Sanders:

    % 2.33 Na2O 3.91 K2O 3.3 MgO 22.42 CaO 8.91 Al2O3 30.99 SiO2 1.91 P2O5 3.04 Fe2O3 1.26 MnO 21.44

    LOI

    Desert plant ash 

    Type: ash

    Formula: % 28.0 Na2O 5.5 K2O 0.5 MgO 21.1 CaO 1.8 P2O5 34.0 CO2

    Molecular Wt.: 90.9

    Desert plant ash supplies several oxides, especially Na2O and CaO.

    Notes:

    Analyses:

    Tichane (TCB): (adds to 91%)

    % 28.0 Na2O 5.5 K2O 0.5 MgO 21.1 CaO 1.8 P2O5 34.0 CO2

    Elder ash 

    Type: ash

    Formula: % 2 Na2O 17 K2O 16 MgO 38 CaO 14 SiO2 13 P2O5

    Molecular Wt.: 100.0

    Elder ash supplies several oxides, especially CaO.

    Notes:

    Analyses:

    Hamer & Hamer:

    % 2 Na2O 17 K2O 16 MgO 38 CaO 14 SiO2 13 P2O5

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    Fern ash 

    Type: ash

    Formula: % 0.56 Na2O 4.81 K2O 7.44 MgO 8.59 CaO 19.32 Al2O3 55.02 SiO2 0.3 TiO2 0.92 P2O5 1.67

    Fe2O3 1.36 MnO

    Molecular Wt.: 100.0

    Fern ash supplies several oxides, especially SiO2 and Al2O3.

    Notes:

    Analyses:Rogers (appendix):

    % 0.56 Na2O 4.81 K2O 7.44 MgO 8.59 CaO 19.32 Al2O3 55.02 SiO2 0.3 TiO2 0.92 P2O5 1.67 Fe2O3 1.36

    MnO

    Hamer & Hamer: (Bracken and fern)

    % 3 Na2O 26 K2O 8 MgO 12 CaO 10 Al2O3 33 SiO2 6 P2O5 1 Fe2O3 1 MnO

    Grass ash

    Type: ash

    Formula: % 7.956 KNaO 6.159 MgO 14.283 CaO 10.388 Al2O3 61.214

    SiO2

    Molecular Wt.: 100.0

    Grass ash supplies several oxides, especially SiO2 and CaO.

    Notes:

    Generic grass ash.

    Analyses:

    Green: (weed and grass ash)

    0.2 KNaO 0.3 MgO 0.5 CaO 0.2 Al2O3 2.0 SiO2

    Green: (unwashed lawn clippings, from Leach "A Potter's Book")

    0.41 KNaO 0.29 MgO 0.30 CaO 0.27 Al2O3 1.09 SiO2 0.12 P2O5 0.03 Fe2O3

    Green: (washed lawn clippings, from Leach "A Potter's Book")

    0.15 KNaO 0.32 MgO 0.53 CaO 0.38 Al2O3 1.52 SiO2 0.15 P2O5 0.05 Fe2O3Rogers: (Lawn grass)

    % 6.20 Na2O 6.19 K2O 5.65 MgO 12.88 CaO 16.60 Al2O3 39.64 SiO2 9.00 P2O5 3.44 Fe2O3

    Hamer & Hamer: (Lawn grass)

    % 3 Na2O 5 K2O 5 MgO 10 CaO 11 Al2O3 59 SiO2 5 P2O5 2 Fe2O3

    Hazel ash

    Type: ash

    Formula: % 10 Na2O 35 K2O 15 MgO 26 CaO 10 SiO2 4 P2O5

    Molecular Wt.: 100.0

    Hazel ash supplies several oxides, especially K2O and CaO.Notes:

    Analyses:

    Hamer & Hamer:

    % 10 Na2O 35 K2O 15 MgO 26 CaO 10 SiO2 4 P2O5

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    Hearth ash

    Also called: Dobai

    Type: ash

    Formula: % 0.55 Na2O 1.49 K2O 5.44 MgO 35.9 CaO 3.69 Al2O3 14.08 SiO2 2.14 P2O5 0.94 Fe2O3 34.32

    H2O 0.14 MnO

    Molecular Wt.: 98.7

    Hearth ash supplies several oxides, especially CaO and SiO2.

    Notes:Analyses: Cardew:

    % 0.55 Na2O 1.49 K2O 5.44 MgO 35.9 CaO 3.69 Al2O3 14.08 SiO2 2.14 P2O5 0.94 Fe2O3 34.32 H2O 0.14

    MnO

    (Hearth ash ('Dobai'), Japan (E. Kato, Interceram, 2 (1962), 110).)

    Heather ash

    Type: ash

    Formula: % 9 Na2O 12 K2O 10 MgO 21 CaO 41 SiO2 5 P2O5 2 Fe2O3

    Molecular Wt.: 100.0

    Heather ash supplies several oxides, especially SiO2 and CaO.Notes:

    Analyses:

    Hamer & Hamer:

    % 9 Na2O 12 K2O 10 MgO 21 CaO 41 SiO2 5 P2O5 2 Fe2O3

    Isu-wood ash

    Also called: Issu-wood ash

    Type: ash

    Formula: % 0.06 Na2O 2.51 K2O 5.99 MgO 47.71 CaO 4.38 Al2O3 34.6 SiO2 3.93 P2O5 0.49 Fe2O3 0.33

    MnO

    Molecular Wt.: 100.0

    Isu-wood ash supplies several oxides, especially CaO and SiO2.

    Notes:

    Issu (Distylium racemosum) is the source of a very popular wood ash in Japan. Note the incredible variations in

    the analyses.

    Analyses:

    Sanders:

    % 0.06 Na2O 2.51 K2O 5.99 MgO 47.71 CaO 4.38 Al2O3 34.6 SiO2 3.93 P2O5 0.49 Fe2O3 0.33 MnO

    Cardew:

    % 0.2 Na2O 1 K2O 6.6 MgO 36.68 CaO 4.16 Al2O3 16.19 SiO2 3.67 P2O5 0.92 Fe2O3 30.08 H2O 0.8 SO3

    0.48 MnO(Isu Ash from Hagi, Japan (E. Kato, Interceram, 2 (1962), 110).)

    Leach ("A Potter's Book"):

    % 0.84 K2O 1.57 MgO 15.95 CaO 0.63 Al2O3 71.96 SiO2 0.42 P2O5 0.28 Fe2O3 8.29 LOI

    (from work done by J.B.E. Patterson)

    Ivy ash

    Type: ash

    Formula: % 20 Na2O 26 K2O 8 MgO 25 CaO 12 SiO2 6 P2O5 3 Fe2O3

    Molecular Wt.: 100.0

    Ivy ash supplies several oxides, especially CaO, K2O, and Na2O.Notes:

    Analyses:

    Hamer & Hamer:

    % 20 Na2O 26 K2O 8 MgO 25 CaO 12 SiO2 6 P2O5 3 Fe2O3

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    Larch wood ash 

    Type: ash

    Formula: % 9 Na2O 21 K2O 8 MgO 27 CaO 1 Al2O3 11 SiO2 8 P2O5 4 Fe2O3 11 MnO

    Molecular Wt.: 100.0

    Larch wood ash supplies several oxides, especially CaO, K2O, SiO2, and MnO.

    Notes:

    Analyses:Hamer & Hamer:

    % 9 Na2O 21 K2O 8 MgO 27 CaO 1 Al2O3 11 SiO2 8 P2O5 4 Fe2O3 11 MnO

    Mahogany ash

    Type: ash

    Formula: % 10.98 Na2O 9.49 K2O 4.39 MgO 9.49 CaO 3.81 Al2O3 51.51 SiO2 2.08 P2O5 4.53 Fe2O3

    3.72 LOI

    Molecular Wt.: 100.0

    Mahogany ash supplies several oxides, especially SiO2.

    Notes:Analyses:

    Cardew:

    % 10.98 Na2O 9.49 K2O 4.39 MgO 9.49 CaO 3.81 Al2O3 51.51 SiO2 2.08 P2O5 4.53 Fe2O3

    (Australian white mahogany)

    (Forestry Commission of New South Wales, 1956)

    Maple ash

    Type: ash

    Formula: % 6.04 Na2O 6.2 K2O 12.05 MgO 27.5 CaO 0.9 Al2O3 13.8 SiO2 8.1 P2O5 2.5 Fe2O3 0.5 MnO

    22.41 LOI

    Molecular Wt.: 100.0

    Maple ash supplies several oxides, especially CaO.

    Notes:

    Analyses:

    Conrad:

    % 6.04 Na2O 6.2 K2O 12.05 MgO 27.5 CaO 0.9 Al2O3 13.8 SiO2 8.1 P2O5 2.5 Fe2O3 0.5 MnO

    Meadow hay ash

    Type: ash

    Formula: % 7.0 Na2O 25.67 K2O 5.0 MgO 11.56 CaO 29.57 SiO2 6.2 P2O5 1.0 Fe2O3Molecular Wt.: 86.0

    Meadow hay ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:

    Rogers (appendix):

    % 7.0 Na2O 25.67 K2O 5.0 MgO 11.56 CaO 29.57 SiO2 6.2 P2O5 1.0 Fe2O3

    Hamer & Hamer: (Meadow grass)

    % 4 Na2O 15 K2O 5 MgO 10 CaO 3 Al2O3 58 SiO2 4 P2O5 1 Fe2O3

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    Oak ash

    Type: ash

    Formula: % 9.12 Na2O 14 K2O 12 MgO 30 CaO 0.1 Al2O3 15.3 SiO2 13.1 P2O5 2.4 Fe2O3 0.1 MnO 3.88 LOI

    Molecular Wt.: 100.0

    Oak ash supplies several oxides, especially CaO.

    Notes:

    Analyses:

    Conrad:% 9.12 Na2O 14 K2O 12 MgO 30 CaO 0.1 Al2O3 15.3 SiO2 13.1 P2O5 2.4 Fe2O3 0.1 MnO

    Tichane (TCB):

    % 3.9 Na2O 9.5 K2O 3.9 MgO 72.5 CaO 2.0 SiO2 5.8 P2O5

    Rogers: (English oak)

    % 9.12 Na2O 14.00 K2O 12.01 MgO 30.02 CaO 0.13 Al2O3 15.30 SiO2 13.8 P2O5 2.40 Fe2O3 0.10 MnO

    0.05 CuO 2.61 SO3 1.18 Cl

    Rogers (appendix): (China)

    % 1.47 Na2O 5.77 K2O 4.09 MgO 23.54 CaO 15.11 Al2O3 39.81 SiO2 2.3 P2O5 3.58 Fe2O3 4.32 MnO

    Rogers (appendix): (Japan)

    % 1.52 Na2O 5.68 K2O 4.14 MgO 23.69 CaO 16.34 Al2O3 39.62 SiO2 2.62 P2O5 3.83 Fe2O3 1.01 MnO

    Hamer & Hamer:% 6 Na2O 11 K2O 9 MgO 51 CaO 1 Al2O3 10 SiO2 10 P2O5 1 Fe2O3 1 MnO

    Oat straw ash

    Type: ash

    Formula: % 4 Na2O 30 K2O 4 MgO 7 CaO 49 SiO2 5 P2O5 1 Fe2O3

    Molecular Wt.: 100.0

    Oat straw ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:

    Hamer & Hamer:% 4 Na2O 30 K2O 4 MgO 7 CaO 49 SiO2 5 P2O5 1 Fe2O3

    Pine ash

    Type: ash

    Formula: % 3.77 Na2O 8.98 K2O 4.45 MgO 39.73 CaO 9.71 Al2O3 24.39 SiO2 2.78 P2O5 3.41 Fe2O3 2.74

    MnO

    Molecular Wt.: 100.0

    Pine ash supplies several oxides, especially CaO and SiO2.

    Notes:

    Analyses:Sanders:

    % 3.77 Na2O 8.98 K2O 4.45 MgO 39.73 CaO 9.71 Al2O3 24.39 SiO2 2.78 P2O5 3.41 Fe2O3 2.74 MnO

    Conrad:

    % 8.6 Na2O 26.5 K2O 6.3 MgO 25 CaO 0.4 Al2O3 10 SiO2 8.9 P2O5 4 Fe2O3 5.6 MnO

    Tichane (TCB):

    % 3.8 Na2O 9.0 K2O 4.5 MgO 39.7 CaO 9.7 Al2O3

    24.4 SiO2 3.4 Fe2O3 2.8 P2O5

    Rogers:

    % 8.65 Na2O 26.50 K2O 6.32 MgO 25.00 CaO 0.43 Al2O3 10.00 SiO2 8.8 P2O5 4.00 Fe2O3 5.06 MnO

    4.63 SO3 0.52 Cl

    Rogers (appendix):% 3.77 Na2O 8.98 K2O 4.45 MgO 39.73CaO 9.71 Al2O3 24.39 SiO2 4.45 P2O5 3.41 Fe2O3 2.74 MnO

    Hamer & Hamer: (Scots pine)

    % 6 Na2O 18 K2O 6 MgO 32 CaO 5 Al2O3 18 SiO2 7 P2O5 4 Fe2O3 4 MnO

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    Potato tuber ash 

    Type: ash

    Formula: % 36.315 K2O 2.463 MgO 1.055 CaO 15.819 Al2O3 37.007 SiO2 7.341 P2O5

    Molecular Wt.: 100.0

    Potato tuber ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:

    Green:0.82 K2O 0.13 MgO 0.04 CaO 0.33 Al2O3 1.31 SiO2 0.11 P2O5

    Rice hull ash

    Also called: Rice husk ash

    Type: ash

    Formula: % 0.26 Na2O 0.9 K2O 0.22 MgO 0.48 CaO 1 Al2O3 96 SiO2 0.02 P2O5 0.16 TiO2 0.04 Fe2O3 0.19

    MnO 0.96 LOI

    Molecular Wt.: 100.2

    Rice hull ash supplies several oxides, especially SiO2.

    Notes:Analyses:

    Sanders:

    % 0.26 Na2O 0.9 K2O 0.22 MgO 0.48 CaO 1 Al2O3 96 SiO2 0.02 P2O5 0.16 TiO2 0.04 Fe2O3 0.19 MnO

    0.96 LOI

    Conrad:

    % 0.26 Na2O 0.9 K2O 0.22 MgO 0.48 CaO 1 Al2O3 96 SiO2 0.02 P2O5 0.04 Fe2O3 0.19 MnO

    (Claims this analysis is from from Cardew, but there is no rice hull in Cardew. Looks like it came from Sanders,

    but with errors.)

    Rogers (appendix):

    % 1.35 K2O 1.04 CaO 1.78 Al2O3 94.36 SiO2 0.61 Fe2O3

    Rice straw ash

    Type: ash

    Formula: % 0.36 Na2O 2.48 K2O 1.35 MgO 3.69 CaO 1.36 Al2O3

    82.18 SiO2 0.68 P2O5 0.42 Fe2O3 0.38 SO3 7.1 LOI

    Molecular Wt.: 100.0

    Rice straw ash supplies several oxides, especially SiO2.

    Notes:

    Analyses:

    Cardew:

    % 0.36 Na2O 2.48 K2O 1.35 MgO 3.69 CaO 1.36 Al2O3 82.18 SiO2 0.68 P2O5 0.42 Fe2O3 0.38 SO3 6.2 LOI(Ware-bai)

    (E. Kato, Interceram, 2 (1962) 110)

    Sanders:

    % 0.77 Na2O 3.57 K2O 1.38 MgO 3.07 CaO 1.13 Al2O3 40 SiO2 2.51 P2O5 0.26 Fe2O3 0.30 MnO 47.26 LOI

    Rogers:

    % 0.96 Na2O 1.68 K2O 2.44 MgO 4.00 CaO 9.11 Al2O3 77.68 SiO2 0.90 P2O5 2.93 Fe2O3

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    Rye straw ash

    Type: ash

    Formula: % 18.118 K2O 1.254 MgO 3.331 CaO 15.574 Al2O3 57.105 SiO2 2.811 P2O5 1.807 Fe2O3

    Molecular Wt.: 100.0

    Rye straw ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:

    Green:0.68 K2O 0.11 MgO 0.21 CaO 0.54 Al2O3 3.36 SiO2 0.04 Fe2O3 0.07 P2O5

    Rogers:

    % 1.74 Na2O 22.56 K2O 3.10 MgO 8.20 CaO 49.27 SiO2 6.53 P2O5 1.91 Fe2O3 4.25 SO3 2.18 Cl

    Spruce ash

    Type: ash

    Formula: % 8.99 Na2O 6.53 K2O 10.99 MgO 8.56 CaO 2.19 Al2O3 19.01 SiO2 8.65 P2O5

    2.46 Fe2O3 32.62 LOI

    Molecular Wt.: 100.0

    Spruce ash supplies several oxides, especially SiO2 and MgO.Notes:

    Analyses:

    Conrad:

    % 8.99 Na2O 6.53 K2O 10.99 MgO 8.56 CaO 2.19 Al2O3 19.01 SiO2 8.65 P2O5 2.46 Fe2O3

    Rogers:

    % 1.37 Na2O 19.66 K2O 11.27 MgO 33.97 CaO 2.73 SiO2 2.12 P2O5 1.42 Fe2O3 22.96 MnO

    2.64 SO3 0.07 Cl

    Hamer & Hamer:

    % 10 Na2O 14 K2O 10 MgO 55 CaO 4 SiO2 7 P2O5

    Straw ashType: ash

    Formula: 0.4 KNaO 0.2 MgO 0.4 CaO 2.7 SiO2 0.1 P2O5

    Molecular Wt.: 238.1

    Straw ash supplies several oxides, especially SiO2.

    Notes:

    Generic straw ash.

    Analyses:

    Green: (straw ash from cereal crops)

    0.4 KNaO 0.2 MgO 0.4 CaO 2.7 SiO2 0.1 P2O5

    Tallowwood ash

    Type: ash

    Formula: % 6.84 Na2O 2.41 K2O 25.58 MgO 52.15 CaO 1.09 Al2O3 8.96 SiO2 0.4 P2O5 1.93 SO3 0.38 Cl2

    0.18 MnO

    Molecular Wt.: 99.9

    Tallowwood ash supplies several oxides, especially CaO and MgO.

    Notes:

    Analyses:

    Cardew:

    % 6.84 Na2O 2.41 K2O 25.58 MgO 52.15 CaO 1.09 Al2O3 8.96 SiO2 0.4 P2O5 1.93 SO3 0.38 Cl2 0.18 MnO(Eucalyptus microscorys III (Tallowwood) Forestry Commission

    of New South Wales, 1956)

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    Thatching grass ash 

    Type: ash

    Formula: % 0.22 Na2O 2.55 K2O 3.67 MgO 6.14 CaO 5.42 Al2O3

    76.96 SiO2 1.58 P2O5 0.22 TiO2 1.06 Fe2O3 0.15 SO3

    0.67 MnO 1.4 LOI

    Molecular Wt.: 100.0

    Thatching grass ash supplies several oxides, especially SiO2.Notes:

    Analyses:

    Cardew:

    % 0.22 Na2O 2.55 K2O 3.67 MgO 6.14 CaO 5.42 Al2O3 76.96 SiO2 1.58 P2O5 0.22 TiO2 1.06 Fe2O3

    0.15 SO3 0.67 MnO 1.4 LOI

    (Abuja, Nigeria. Wahsed and calcined at 900C)

    (Overseas Geological Surveys, London, 1966)

    Turpentine ash

    Type: ash

    Formula: % 4.08 Na2O 1.2 K2O 1.03 MgO 1.88 CaO 1.26 Al2O3 89.74 SiO2 0.39 P2O5 0.42 LOIMolecular Wt.: 100.0

    Turpentine ash supplies several oxides, especially SiO2.

    Notes:

    Analyses:

    Cardew:

    % 4.08 Na2O 1.2 K2O 1.03 MgO 1.88 CaO 1.26 Al2O3 89.74 SiO2 0.39 P2O5

    (Australian turpentine)

    (Forestry Commission of New South Wales, 1956)

    Walnut ashType: ash

    Formula: % 4.9 Na2O 14.7 K2O 6.6 MgO 38.7 CaO 0.5 Al2O3 16 SiO2 6.5 P2O5 1.9 Fe2O3 0.42 MnO 9.78

    LOI

    Molecular Wt.: 100.0

    Walnut ash supplies several oxides, especially CaO, K2O, and SiO2.

    Notes:

    Analyses:

    Conrad:

    % 4.9 Na2O 14.7 K2O 6.6 MgO 38.7 CaO 0.5 Al2O3 16 SiO2 6.5 P2O5 1.9 Fe2O3 0.42 MnO

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    Wheat straw ash

    Type: ash

    Formula: % 2.8 Na2O 11.5 K2O 2.5 MgO 6.1 CaO 66.2 SiO2 5.4 P2O5

    2.8 SO3 3.8 S

    Molecular Wt.: 101.1

    Wheat straw ash supplies several oxides, especially SiO2 and K2O.

    Notes:

    Analyses:Cardew:

    % 2.8 Na2O 11.5 K2O 2.5 MgO 6.1 CaO 66.2 SiO2 5.4 P2O5 2.8 SO3 3.8 S

    (Air dried)

    (B.C.S., (1959), 59P)

    Green:

    0.67 K2O 0.14 MgO 0.19 CaO 0.71 Al2O3 4.95 SiO2 0.10 P2O5

    Tichane (TCB):

    % 2.8 Na2O 11.5 K2O 2.5 MgO 6.1 CaO 66.0 SiO2 5.4 P2O5 2.8 LOI

    Rogers:

    % 1.4 Na2O 13.6 K2O 2.5 MgO 5.8 CaO 67.5 SiO2 4.8 P2O5 0.6 Fe2O3

    Hamer & Hamer:% 2 Na2O 13 K2O 4 MgO 6 CaO 70 SiO2 5 P2O5

    Willow ash

    Type: ash

    Formula: % 2.50 Na2O 49.80 K2O 8.26 MgO 20.21 CaO 0.05 Al2O3

    4.44 SiO2 10.00 P2O5 1.25 Fe2O3 0.18 MnO 1.22 SO3 0.08

    Cl

    Molecular Wt.: 98.0

    Willow ash supplies several oxides, especially K2O, CaO, and P2O5.

    Notes:

    Analyses:Rogers:

    % 2.50 Na2O 49.80 K2O 8.26 MgO 20.21 CaO 0.05 Al2O3 4.44 SiO2 10.00 P2O5 1.25 Fe2O3 0.18 MnO

    1.22 SO3 0.08 Cl

    Hamer & Hamer:

    % 3 Na2O 51 K2O 9 MgO 21 CaO 5 SiO2 10 P2O5 1 Fe2O3

    Wood ash

    Type: ash

    Formula: % 12.452 KNaO 6.427 MgO 71.54 CaO 9.581 SiO2

    Molecular Wt.: 100.0

    Wood ash supplies several oxides, especially CaO.

    Notes:

    Generic wood ash.

    Analyses:

    Green:

    0.1 KNaO 0.1 MgO 0.8 CaO 0.1 SiO2

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    This database contains analyses of plant ashes. Plant ashes have

    notoriously variable compositions, as you may see by comparing some of

    the analyses included here. Some factors that cause this variation

    include:

    - different soils lead to different nutrient uptake

    - different parts of the plant concentrate different chemical compounds- plants do different things at different times of the year

    - older and younger plants have different compositions

    - the degree of washing of the ash leads to different flux amounts

    This topic is discussed at greater length in "Ash Glazes" (Tichane)

    and "Ash Glazes" (Rogers).

    Sources of analyses:

    Michael Cardew, "Pioneer Pottery" (1969)

    Herbert H. Sanders. "The World of Japanese Ceramics" (?)

    John W. Conrad, "Advanced Ceramic Manual" (1987)

    David Green, "A Handbook of Pottery Glazes" (1979)

    Robert Tichane, "Those Celadon Blues" (1978)

    Phil Rogers, "Ash Glazes" (1991)

    Frank and Janet Hamer, "The Potter's Dictionary of Materials and

    Techniques" 4th edition (1997)

    More ash analyses can be obtained from Robert Tichane, "Ash Glazes"

    (1987). Tichane in turn refers to two sources: Thorpe's "Dictionary of

    Applied Chemistry" (1937?) contains analyses of ash from many

    vegetable materials. The second and most complete source (also used by

    Thorpe) is Emil Wolff's "Aschen Analysen" (1880), in German. This is

    reportedly the most comprehensive compilation of ash analyses in

    existence.

    A table of Australian wood ash analyses can be found on pg. 199 of Ian

    Currie's "Stoneware Glazes" 2nd ed. (1985). The table contains about

    30 analyses.

    Original en: “GlazeChem ceramic glaze database” año 2001

    Recopilacion HEG 2016