Chrome-free lignosulfonate is a drilling mud thinner produced by multi chemical reactions followed by drying of natural high molecular weight compound, organic material and harmless metal ions. The product contains no Chromium heavy metal and is ideal for use in drilling at densely populated area and offshore. Index name Index Appearance yellow brown or brown powder Moisture 8% Dry matter 93% PH(2% Aq. solution) >7 Total CaSO4 % 2.0 - 4.0 Total Fe % 4% Insoluble alkaline material % 2.5%. It is packed in 25 kg net weight moisture proof multi-wall paper bags, with pe film inside. Other size packing is also available on request.
