Sodium asphalt sulfonate is black water-soluble powder that is the poly-anionic modified Sulfonated Asphalt. It can plug stratum cracks, prevent shale collapse and inhibit shale hydration. It reduces high temperature fluid loss, lowers torque & drag, and stabilizes shale formation & aids oil emulsification. It can be used both in water-based drilling fluid system.

Sodium asphalt sulfonate can be used into all types of water-based drilling fluid system, it can be added in system directly as a powder or in water solution. Suggested dosage is 0.5-1.0%.

The product is usually kept in a compound or multi-wall bags, with each net weight 25 KG; Special packages are available based on customers' requirements.

The product should be kept in shady, dry and ventilated warehouse with environment temperature controlled within 122F and relative humidity 50%. It should be prevented from sun and rain, and positioned in some place away from heat and fire; the recommendation for bag piles is no more than 8 layers.
The expiration period is 12 months. It should not be utilized unless examined and qualified if out of expiration.

Avoid contacting with eyes, skin and clothing. Otherwise, wash with a flush of water. Refer to Material Safety Data Sheet (MSDS) for complete handling and hazard data.