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Sulfonated lignite

  • Sulfonated lignite
  • Sulfonated lignite
  • Sulfonated lignite

Sulfonated lignite

CAS No.: 8013-99-8
Sulfonated lignite is a product obtained by sulfonating lignite humic acid through a sulfonation reaction. It appears as a brownish-black powder.
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Product Details


Basic Information

Product NameSulfonated Lignite
Main CompositionSulfonated modified product of natural lignite
Temperature Resistance150~180℃
Main FunctionsReduce fluid loss, stabilize wellbore, resist salt and calcium, improve mud cake quality
Applicable SystemAll kinds of water-based drilling fluids
CAS NoteIndustrial compound mixture, no independent CAS number


Physical and Chemical Properties

AppearanceBlack brown flowing powder
Moisture Content≤10.0%
Water Soluble Substance≥70.0%
pH Value (1% aqueous solution)8.0~10.0
FinenessOver 90% pass 60-mesh sieve
SolubilityEasily soluble in alkaline water


Core Performance and Chemical Characteristics

Good Fluid Loss ControlEffectively reduce API and high temperature fluid loss
Excellent High Temperature StabilityStable performance after high temperature aging
Salt and Calcium ResistanceAdapt to medium and high salinity drilling fluid
Wellbore StabilizationInhibit shale hydration expansion and prevent borehole collapse
Improve Mud CakeForm thin and tough mud cake with low permeability
Good CompatibilityMatch well with resins, polymers and other additives


Safety Information   

ToxicityLow toxicity, environmentally friendly
Health HazardDust causes slight irritation to respiratory tract and eyes
Protective MeasuresWear dust mask, safety goggles and gloves
Storage ConditionSeal and store in cool dry place, prevent damp
TransportationOrdinary industrial chemicals
First AidRinse contacted skin and eyes with clean water
Waste DisposalDispose in accordance with local environmental regulations


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