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TSANA (Blighia sapida)

Trade Name

Tsana

Scientific Name

Blighia sapida Koen.

Family

SAPINDACEAE

Common Names

Ukpe (Nigeria); Ishin (Nigeria); Akee (Ghana); Kaha (Côte d`Ivoire); Ngwin (Gabon); Ekom (Gabon); Akee (Cameroon); Ukpi nufwa; Ukpe rerhen; Ukpe agbana; Ukpe; Takwadua; Sugo; Savory akee apple; Sago; Peso; Pehega; Otusi; Okwocha; Okpu; Ntokwaw; Ntokwa; Ndamba; Kiidatso; Kidatso; Kidateo; Keka; Kake; Kaka; Jokomi; Islii; Ishin-oka; Ishin; Ilipa; Ila; Hatei; Gwanje-kusa; Guruguru; Finzan; Feso; Chira; Baza; Ayigbe atia; Awai; Atsia; Atsa; Ankye-fufuo; Ankye; Alale; Akyea; Akye-fufu; Akye; Aki; Akee apple; Akaa; Adzo; Adza; Adja; Abikotor; Abale; Tsana

Description Of The Tree

Botanical Description

The bole is up to 16 m in length, straight and cylindrical, with diameters up to 130 cm. The tree presents 6 or 7 short buttresses.

Natural Habitat

Natural Distribution

West and Central Africa, from Senegal to Gabon.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Occasionally white deposits in heartwood vessels. Tyloses thin walled. Non-vestured pits. Vessels per mm2 less than 6 (ra Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 2 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Septate fibers present. Fibers with simple to minutely bordered pits.

Availability

Cites Status

Unrestricted

General Wood Description

Color

The sapwood is white. The heartwood is brown orange, it is clearly demarcated.

Grain

Straight; grain has no particular influence on drying, machining and finishing qualities.

Texture

Medium texture is reported in this species.

Luster

Luster is usually low.

Natural Durability

Moderately durable to decay. Without preservative treatment, this species can be used only under risk of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Heartwood is sensible to Lyctus attack

Natural durability index (1= Very high durability, 7=Vey low durability)

3

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.60

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.66

Drying Defects

Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: No particular risks of drying defects, subject to normal drying conditions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

696

Stiffness (MOE) 12%MC (kgf/cm²)

164916

Compression parallel to fiber 12%MC (kgf/cm²)

470

Compression perpendicular to fiber 12%MC (kgf/cm²)

57

Janka hardness (side) 12%MC (kgf)

539

Janka hardness (end grain) 12%MC (kgf)

640

Workability

Rotary Veneer Cutting

Not suitable for veneering.

Sliced Veneer

Not suitable for veneering.

Blunting Effect

Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.

Planing

Moderately easy; tools must be cautiously sharpened.

Moulding

Moderately easy; tools must be cautiously sharpened.

Turning

30

Boring

Moderately easy; tools must be cautiously sharpened.

Mortising

Moderately easy; tools must be cautiously sharpened.

Nailing

Pre-boring is necessary.

Gluing

Glues well if basic gluing technical rules are followed.

Sanding

Easy to perform; it gives good results.

Polishing

Can be polished without surface preparation.

Response To Hand Tools

Working with hand tools is difficult.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, parquet, fittings, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, SPORTS, TOOLS, tool handles, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats

General Housing
  • 10 - Silica in Timbers
Parquet
  • 15 - Empire Timbers
Fittings
  • 19 - Silica in Timbers
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
  • 24 - Empire Timbers
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Turning
  • 30 - Embassy of Honduras in Japan
Sports
  • 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Truck Body
  • 53 - Timbers of the New World
Truck Flooring
  • 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America
Boats
  • 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.

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