Carbomer 981LP is a carbomer-based polymeric pharmaceutical excipient used for viscosity modification, rheology control, thickening, suspension stabilization and formulation performance. Carbomer polymers are high-molecular-weight, crosslinked polyacrylic acid polymers that provide useful rheological properties in pharmaceutical formulations.
Carbomer 981LP is associated with the Carbomer Homopolymer Type A family. Carbomer Homopolymer Type A materials are designed to provide rheology modification and viscosity control while offering useful suspension and formulation-stabilizing characteristics. Lubrizol lists Carbopol 981 NF as a cosolvent-polymerized homopolymer with a relatively low viscosity profile compared with high-viscosity grades such as 974P and 980.
Carbomer 981-type excipients can be used in pharmaceutical formulations requiring viscosity modification, thickening, rheology control and suspension stabilization. Carbomer polymers are also used in topical and semisolid formulation systems, including gels and lotions, where controlled flow characteristics and formulation stability are required.
Carbomer 981LP can provide controlled rheological modification and viscosity development at relatively low concentrations. Its performance depends on polymer concentration, neutralization, pH, electrolytes, processing conditions and other formulation ingredients.
The 981 NF reference is characterized by a 4,000–10,000 cP viscosity range at 0.5% w/w, making it a lower-viscosity carbomer grade than Carbopol 974P and 980 NF.
Carbomer 981LP belongs to the carbomer family of synthetic crosslinked polyacrylic acid polymers. It functions as an inactive pharmaceutical excipient rather than an active pharmaceutical ingredient.
For the corresponding Carbopol 981 NF reference, Lubrizol identifies the material as Carbomer Homopolymer Type A. Its polymerization solvent is a cosolvent system based on ethyl acetate and cyclohexane.
Quality testing for Carbomer 981LP may include identification, viscosity, carboxylic acid content, loss on drying, residual solvents, sulfate ash/residue on ignition and other applicable product-specific tests.
The exact acceptance criteria should be taken from the specification and Certificate of Analysis for the actual Carbomer 981LP grade supplied.
Swapnroop supports pharmaceutical customers with specification-focused pharmaceutical excipient products for formulation and manufacturing applications. Carbomer 981LP can be positioned for customers requiring a carbomer excipient for viscosity modification, rheology control, thickening and suspension stabilization.
Product grade, regulatory status, compendial compliance and documentation should be confirmed according to the specific material supplied.
Carbomer 981LP should be stored in tightly closed original packaging and protected from moisture, contamination and unsuitable environmental conditions. Storage temperature, shelf life and handling requirements should follow the applicable manufacturer specification.
Depending on the supplied grade and customer requirements, documentation may include Certificate of Analysis, Safety Data Sheet, Technical Data Sheet, product specification and applicable quality or regulatory documentation.
Carbomer 981LP is suitable for pharmaceutical formulations requiring viscosity modification, rheology control, thickening, suspension stabilization and controlled formulation performance.
Swapnroop supports pharmaceutical customers with specification-focused pharmaceutical excipient supply, quality documentation and technical support for formulation and manufacturing requirements.
| Parameter | Specification |
|---|---|
| Appearance | white to off-white crystalline powder |