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Ferro Chrome Ligonsulphonate(FCLS)

Properties and application:

Blackish brown powder, FCLS is a specially prepared thinner and fluid loss control agent used in drilling fluids. It has character of anti-high temperature and anti-electrolysis, etc.. It is suitable to all kinds of muds. Be effective at temperature more than 150-160℃ and also used at the temperature above 200℃ when cooperated with lignite derivatives

and other temperature-resisting chemicals. .FCLS is a good emulsifier for oil in water mud.




Technical index

Cr complex

75% Min

Total Fe


Total Cr


Total Ca and Mg as CaSO4

3% Max

Water insoluble matter

2.5% Max


8.5% Max



25kg complex paper bag, lined with PE bag.