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| TRADE NAME |
: |
AGBA (TOLA) |
| SCIENTIFIC NAME |
: |
Gosweilerodendron balsamiferum Harms |
| FAMILY |
: |
Caesalpiniaceae |
 |
| REGIONAL DISTRIBUTION |
: |
West Africa and Central Africa
Nigeria : AGBA
Cameroon : SINEDON
Gabon : EMOLO
Congo : TOLA, TOLA BLANC
Zaire : NTOLA
Angola : TOLA BRANCA
W. Germany : AGBA, TOLA BRANCA
Great-Britain : AGBA
Pr. = REGUL. Ex. = REGUL. (increasing)
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| SAPWOOD |
: |
Not clearly demarcated, whitish, 10cm, gummy |
| HEARTWOOD |
: |
|
- Colour : Pinkish yellow-brown, darkening on exposure
- Grain : Straight to slightly interlocked
- Texture : Medium to coarse
- Silver figure : Fine
- Resin exudations
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| TECHNOLOGICAL PROPERTIES |
- Green weight (kg/m3) = 750 - 850
- Specific gravity at 12% M.C. (kg/m3) MV12 = (light to medium) 510
- Volumetric swelling for 1% MC variation V% = (small to medium) 0.32
- Total tangential swelling T% = 5.7
- Total radial swelling R% = 2.4
- Crushing strength (N/mm2) C12 = 37
- Static bending strength (N/mm2) F12 = 93
- Modulus of elasticity (N/mm2) E12 = 8700
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| END USE |
- Plywood
- Exterior joinery
- Interior joinery - mouldings
- Interior fittings
- Furniture
- Boat building
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| REMARKS |
- Natural durability : Moderate
- Lyctus susceptibility : Yes (sapwood used as peeled veneer)
- Preservative treatment : Moderate
- Other remarks :
- Persisting resinous odour
- Often exported with sapwood removed
- Frequent defect in logs = ringshakes
- Another species lesser-known = G. joveri, more reddish and with coarser texture, is exported from Equatorial Guinea, Cameroon, and Gabon, as ODUMA.
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