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DOSR™79 MT Retarder is a synthetic low molecular weight polymer. It contains no lignosulfonates and it is expected to show low toxicity.
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DOSR™79 MT Retarder is typically used at 0.2% to 1.5% by weight of cement.
Salt at high loadings greatly intensifies the retardation obtained with DOSR™79 MT Retarder, so that 350°F BHCTs are readily handled.
Intensifier can be used with DOSR™79 MT Retarder in fresh-water slurries at 400°F or more: a good starting point for testing is to use intensifier at half of the DOSR™79 MT Retarder loading, though other ratios are certainly possible.
DOSR™79 MT Retarder is a synthetic organic retarder primarily designed for use at BHCTs of 150°F and above.
In fresh water slurries, DOSR™79 can be used as a stand-alone retarder up to around 250°F.
DOSR™79 will provide consistent performance to at least 400°F with salt-saturated designs or with the addition of retarder aid.
DOSR™79 MT Retarder in combination with cellulose-based fluid loss additives gives slurries good thixotropic properties.
It is moderately dispersing, so additional dispersants may not be required.
DOSR™79 is incompatible with Strong oxidizing agents, Strong reducing agents.
This representative Safety Data Sheet (SDS) is provided to assist you in evaluating this product. A copy of the specific SDS for your region and language as required by the Globally Harmonized System for the Classification and Labeling of Chemicals (and implementing rules) can be obtained on request by emailing email@example.com.