Chrome free lignosulfonate is mainly used in drilling mud as fluid loss control agent. With good capability to anti-high temperature,anti-electrolytes.Eco-friendly and easily work with other chemical additives. Main Specification ItemRequirementMaterial insoluble to water2.5%maxMoisture8.5%maxPH(2% water solution)2.8~3.8AppearanceBrown powder Mud performance ItemFresh water drilling mudSalt waterdrilling mudNormal temperatureApparent viscosity mPa.s≤20≤25Rate of reducing viscosity %≥85≥65High temperatureApparent viscosity mPa.s≤35≤45Rate of reducing viscosity %≥60≥45 Function 1.Excellent thinning performance and filtration control capacity ,the mud performance of fresh water is better than salt water mud. 2.Anti-high temperature 150℃,it can cooperate with other admixture agent. 3.Good emulsifying effect in mud. Package 25kg net weight. With PE film bag inside and paper-plastic complex bag outside.