Invista Sales And Service India Pvt. Ltd. Offers High-purity Crystalline Adipic Acid. Invista Sales And Service India Pvt. Ltd. Is the supplier of polymers and fibers, primarily for nylon, spandex and polyester applications. High-purity Crystalline Adipic Acid is a white powder that exhibits typical carboxylic acid chemistry suitable for a wide variety of applications. High-purity Crystalline Adipic Acid has the quality of excellent uniformity, and consistent end-use performance which makes it a valuable intermediate in a wide range of application.