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

Item Requirement
Material insoluble to water 2.5%max
Moisture 8.5%max
PH(2% water solution) 2.8~3.8
Appearance Brown powder

Mud performance

Item Fresh water drilling mud Salt water
drilling mud
Normal temperature Apparent  viscosity  mPa.s ≤20 ≤25
Rate of reducing viscosity % ≥85 ≥65
High temperature Apparent viscosity   mPa.s ≤35 ≤45
Rate of reducing viscosity % ≥60 ≥45


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.


25kg net weight. With PE film bag inside and paper-plastic complex bag outside.