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N`TOM (Pachypodanthium confine)

Trade Name

N`tom

Scientific Name

Pachypodanthium confine Engl. et Diels

Family

ANNONACEAE

Common Names

Anioukéli (Côte d`Ivoire); Ntom (Gabon); Ntom (Equatorial Guinea); Touom (Congo); Mbalinga (Central African Republic); Ntombé (Cameroon); Ntoma (Cameroon); Ntom (Cameroon); Molombo (Cameroon); N`tom

Scientific Name Synonyms

Unona confinis Pierre; Duguetia confinis (Engler & Diels) Chatrou

Description Of The Tree

Botanical Description

The tree reaches a height of 30 m. The bole is cylindrical, unbuttressed, straight, and may be up to 20 m. The trunk diameter attains 70 to 100 cm.

Natural Habitat

Pachypodanthium confine is usually found in small groups. It occurs in dense riparian forests, preferably on sandy or swampy surfaces.

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). Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel Axial parenchyma scalariform. Non-crystals in axial parenchyma cells. 5 to 8 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays less than 4 per mm (rare). Rays non-storied. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Oil and/or mucilage cells associated with the axial and/or ray parenchyma (idioblasts). Non-septate fibers. Fibers with simple to minutely bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is red brown or yellow brown with an occasional olive tinge and stripes, it is not clearly demarcated.

COLOR INDEX (1=Black, 7=Light yellow,white)

5

Grain

Straight or slightly interlocked, sometimes with an influence on further processing operations.

Texture

This species is usually reported to have a fine texture.

Natural Durability

Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Moderately resistant to termites attack.

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

5

Resistance To Impregnation

Easy to treat with a full penetration of the preservative products using vacuum-pressure method.

Wood Physical Properties

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

0.65

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

0.72

Drying Defects

Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed.

Recommended Dry Kiln Schedule

FR-3

Wood Chemical Properties

Wood Mechanical Properties

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

830

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

705

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

98

Janka hardness (side) 12%MC (kgf)

644

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

737

Workability

Sawing

It is moderately easy to saw.

Rotary Veneer Cutting

Suitable for slicing, also suitable for peeling if treated.

Sliced Veneer

Suitable for slicing, also suitable for peeling if treated.

Blunting Effect

Slight blunting effect; ordinary tools can be used for sawing and machining.

Machining

Machining of this species is reportedly easy.

Planing

Easy; no particular problems.

Moulding

Easy; no particular problems.

Turning

30

Boring

Easy; no particular problems.

Mortising

Easy; no particular problems.

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, flooring, parquet, fittings, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, PACKING, CONTAINERS, cooperage, OTHER AND MUSICAL INSTRUMENTS, handicrafts

General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
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
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Containers
  • 50 - Properties of imported tropical woods
Cooperage
  • 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)

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