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QUEBRACHO COLORADO (Schinopsis spp)

Trade Name

Quebracho colorado

Scientific Name

Schinopsis spp.

Family

ANACARDIACEAE

Common Names

Quebracho colrado chaqueño (Argentina); Quebracho macho (Argentina); Quebracho colorado santiagueño (Argentina); Tayning (Paraguay); Quebracho santiagueño (Argentina); Coronillo (Paraguay); Paraguas (Argentina); Quebracho chaqueño (Argentina); Maasit (Paraguay); Quebracho colorado (Paraguay)

Description Of The Tree

Botanical Description

It is a small to medium size tree, with total heights of 24 m and diameters of 40 to 110 cm. The trunk is straight and cylindrical. The wood is reported to have a high content of tannins.

Natural Habitat

Schinopsis trees are distributed in South America in the area known as Gran Chaco. In some sites they can be a pioneer species. They are reported to reach maximum development in somewhat swampy areas. Some species of Schinopsis are Vulnerable(IBAMA,2001)

Natural Distribution

South of Brazil, Paraguay, Bolivia and the North of Argentina.

Non Timber Uses

Dermatitis is reported to be induced in sensitive individuals by the contact with the branches, leaves or sawdust of this species.

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Wood Identification

Anatomic Description Of Wood

Simple perforation plates. Occasionally multiple perforation plates. Intervessel pits medium, 7 to 10 micras. Rays 1 to 4 seriate. Septate fibers present.

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

Availability

Cites Status

Unrestricted

General Wood Description

Odor

The timber of this species has a bitter taste due to its high tannin content.

Color

The sapwood is yellowish white, clearly differentiated from the heartwood which is reddish brown.

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

4

Grain

The grain is usually interlocked.

Natural Durability

It is reported as very durable.

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

1

Resistance To Impregnation

The heartwood is extremely resistant to preservative treatment.

Wood Physical Properties

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

1.02

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

1.22

Total shrinkage Tangential (Saturated to 0%MC) (%)

6.1

Total shrinkage Radial (Saturated to 0%MC) (%)

4.4

Recommended Dry Kiln Schedule

US-T1-B1

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

1.4

Actual Dry Kiln Program

http://itto.git.grav-dev.com/wp-content/uploads/2015/08/KD_USA_ENG.pdf

Wood Chemical Properties

Wood Mechanical Properties

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

976

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

627

Workability

Sawing

This species is difficult to cut because of its hardness.

Planing

Planing of this species is reported to be difficult.

Boring

Boring of this species is reported to be difficult.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, piers, HOUSING GENERAL, flooring, steps, SPORTS, bowling polo balls, OTHER AND MUSICAL INSTRUMENTS, handicrafts

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Poles
  • 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Paling Fence Pickets
  • 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
Stake Posts
  • 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Rails
  • 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crossheads Crossarms
  • 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Crossties
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
Piers
  • 9 - Maderas latinoamericanas. IV, Nectandra sp. Ocotea austinii, Persea sp. aff. vesticula, Persea schiedeana
General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
Steps
  • 17 - Tree Conservation Database
Sports
  • 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Balls Bowling Polo
  • 40 - Internet
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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