Sodium lignosulfonate is a yellow brown powder that is completely water soluble and rich in sulfo and carboxyl groups, giving it good water solubility, surfactant, and dispersing properties. It can be used as an animal feed additive due to its antimicrobial and preservative effects. The main specifications list it as a brown powder with a pH between 4-6, at least 95% dry matter, no more than 1.5% water insoluble content, a minimum 5% water reducing capacity, and lignosulfonate content of at least 60%. It is packaged in 25kg woven bags with inner liners or according to customer requirements.