Sodium Lignite

LIGNEX is a specially processed lignite which contains sodium humate as its basic ingredient.

LIGNEX possesses excellent filtration control properties in sodium based weighted mud systems at elevated temperatures. It also imparts the same qualities to salt water/sea water muds. It is very effective deflocculant and shale stabilizer in all types of water base mud. Further more LIGNEX is also an excellent emulsifier of oil in water at high bottom-hole temperatures. It is thermally stable up to 200°C and above

Physical Properties  


Free flowing powder

pH of 1 % solution

8 – 10.5 approx.


15% max.

Thermal stability

200° C

Particle size

90 % pass through 30 mesh

Sodium content

10 % min.

Humic Acid content

55% min

Specific gravity

0.85 – 0.95 approx.

Bulk density

850 Kg./m3 - 950 Kg./m3

Recommended Treatment

As filtration control agent.

2 -  8 ppb

As emulsifier

1 – 2 ppb

As shale stabilizer

10 – 30 ppb

At moderate temperature

2 – 8 ppb

At high temperature

4 - 16 ppb


Hazard Identification
  • Non-hazardous to living organism and environment in small quantities.

  • May cause irritation in case of contact with human skin.

  • Not for human use

LIGNEX does not have a restricted classification for transportation by regulatory agencies. It is a non-combustible product.

Spilled material can be washed with a stream of water
First Aid 
On Skin contact: Wash with plenty of water and soap.

On contact with eyes: immediately wash affected eyes under running water and consult an eye specialist.

LIGNEX should be stored in a clean and dry environment.
25 Kg. 3-ply paper sacks with polyethylene inner lining.