Information pertaining to the Brazilian Walnut wood species is detailed below:

Specie Names
Botanical Name: Tabebuia, spp.
Lumber Name(s): Ipe, Cortez.
Grown in: Brazil, Bolivia, Peru, Venezuela, Guatemala.

Description
Brazilian Walnut is a very dense hardwood with exceedingly fine graining. Its overall color depends on where it's grown and will range from a light yellowish tan to a deep, rich brown.
Color Range and Color Change
Color Range: Brazilian Walnut color range varies considerably based on where it grows. It can vary from a light yellowish tan color with greenish overtones to an almost blackish brown. WFI offers Brazilian Walnut in the medium brown tones.

Color Change: Brazilian Walnut when freshly milled will exhibit a large range of coloration, which will quickly mute into a more uniform range which then will darken over time to a medium to dark brown color.
Special Characteristics and Issues
Site Sanding/ Finishing: This species has a number of alkalines in its chemical makeup which interfere with drying, adhesion and staining. While some oil finishes will dry on this wood, most will not. Also, some neutral oil finishes have reacted with these alkalines and turned red when used with this wood. A water-based finish is the safest bet. ALWAYS test the finish you propose to use FIRST on test pieces to ensure compatibility.
Allergic Reactions: Brazilian Walnut has been known to cause respiratory and contact dermatitis allergic reactions. Care should be taken when exposed to the dust of Brazilian Walnut.