Polyanionic Cellulose Ether (PAC ether)

Nourisi ®Polyanionic Cellulose Ether (PAC ether), is produced by introducing carboxymethyl groups onto the cellulose backbone, creating a sodium salt form with a high degree of substitution (DS ≥ 0.9). This modification gives PAC much better salt tolerance, thermal stability, and filtration control than conventional Carboxymethyl Cellulose (CMC).

 

Polyanionic Cellulose Ether is a high-purity, free-flowing powder produced by introducing carboxymethyl groups onto the cellulose backbone. The resulting sodium salt form has a high degree of substitution (DS ≥ 0.9), which significantly enhances its water solubility, electrolyte resistance, and thermal stability compared to conventional Carboxymethyl Cellulose (CMC).

 

Appearance: Cream white to off-white powder

CAS Number: 9004-32-4

HS Code: 39123100

Solubility: Readily soluble in cold and hot water, seawater, and brine systems

  

Available Grades

 

Nourisi ®Polyanionic Cellulose Ether (PAC ether) 

 

1. Oil & Gas Industry – Beyond Basic Drilling Fluids

PAC ether plays a critical role in cementing operations, where it serves as a fluid loss control agent in cement slurries. It helps maintain the intended water-to-cement ratio, prevents premature dehydration, and ensures proper zonal isolation. In workover and completion fluids, it provides filtration control without damaging the formation. In fracturing fluids, PAC ether acts as a gelling agent, offering excellent proppant suspension and quick hydration at the wellsite.

For offshore and deepwater drilling, PAC ether is particularly valued because it performs effectively in seawater and saturated brine systems—conditions where many other polymers fail. It is also used in reservoir drill-in fluids to minimize formation damage in pay zones, and in high-temperature/high-pressure (HTHP) wells where thermal stability is essential.

 

2. Construction Materials – Advanced Formulations

In the construction sector, PAC ether is not just a water retention agent. It is a key component in 3D printing concrete, where it controls rheology and prevents segregation during extrusion. In self-compacting concrete, it improves flowability while resisting bleeding and settlement. In waterproof mortars, it enhances water repellency and crack resistance.

PAC ether is also used in tile adhesives to extend open time and improve sag resistance. In gypsum-based plasters, it ensures uniform hydration and strong adhesion to substrates. In self-leveling compounds, it provides precise flow control and prevents surface.

Nourisi ®Polyanionic Cellulose Ether (PAC ether) 

 conforms to API 13A. However, we recommend that the user ensure that this product is in compliance with the local regulations in force, particularly in the country where the product is to be consumed.

25kg kraft bag lined with a polyethylene bag, meanwhile, other packaging are available on request. Store away from heat and moisture.