Bloodwood, scientifically known as Pterocarpus tinctorius Welw., or alternately referred to as dyeing purpletan or color-changing purpletan, is a hardwood belonging to the genus Pterocarpus within the Fabaceae family. It is primarily distributed in the eastern, central, and southwestern regions of Africa, countries such as Zambia, Congo, and Tanzania. Below is a detailed account of Bloodwood:
I. Basic Attributes
Scientific Name: Pterocarpus tinctorius Welw.
Family & Genus: Fabaceae, Pterocarpus
Common Name: Zambian Purpletan
Color: Purple-red, brown, light brown. When freshly cut, the color is slightly lighter and darkens over time.
Density: The wood has a relatively high density, typically ranging from 0.75 to 1.30 grams per cubic centimeter, with some high-density specimens capable of sinking in water.
II. Physical Characteristics
Structure: Fine-grained, straight to slightly interlocked grain, with indistinct growth rings.
Pores: Diffuse-porous, with few and small pores containing dark gum deposits.
Axial Parenchyma: Primarily fine bands, with occasional wings.
Wood Rays: Extremely fine, discernible under magnification.
III. Material Properties
Stability: Bloodwood is dimensionally stable, resistant to cracking, and exhibits good toughness and high hardness.
Durability: It is decay-resistant and insect-proof, making it suitable for furniture and craft production.
Glossiness: The surface has good glossiness without any distinct odor.
IV. Uses & Value
Furniture Making: Due to its superior quality, Bloodwood is frequently used to create high-end furniture, rivaling the effects of genuine purpletan.
Crafts: Its beautiful grain patterns and straight texture make it an ideal material for carving and crafting.
Market Value: Although not classified as a national standard redwood, Bloodwood’s similarity to purpletan in terms of material properties and its relatively affordable price have made it popular in the market.
V. Identification Methods
Color & Grain: Observe whether the color is deep red, the grain is straight, and if there are fine textures resembling “cowhair veins.”
Glossiness: Bloodwood has good glossiness, but post-polishing, it may not shine as brightly as purpletan.
Odor: The scent of Bloodwood is similar to that of purpletan but with slight differences. Upon burning, the distinction becomes more apparent, with purpletan emitting a subtle fragrance while Bloodwood may have no discernible aroma or a slightly sour odor.
Density & Weight: High-density Bloodwood can sink in water and weighs similarly to purpletan.
VI. Additional Information
Conservation Status: Although not listed as an endangered species, overexploitation can lead to resource depletion, necessitating responsible harvesting and utilization.
Market Trends: With the resurgence of traditional culture and the pursuit of high-quality living, the demand for Bloodwood furniture and crafts is expected to continue growing.
In conclusion, Bloodwood is a hardwood material with excellent material properties and market value, suitable for crafting high-end furniture and artisanal pieces. Given its similarity to purpletan, it is also prone to being mislabeled as such in sales, thus requiring careful identification during purchase.
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