| Product Form and Chemistry | 15% | Confirm whether the product is a silicone emulsion, silicone compound, self-emulsifying antifoam, or silicone-polyether formulation. Match the chemistry with the process medium. | Different formulations have different dispersion behavior, persistence, compatibility, and downstream effects. A technically suitable product reduces the risk of fish eyes, surface defects, or unstable emulsions. | Technical Data Sheet, composition description, recommended application range, compatibility statement, and a laboratory sample for process testing. |
| Foam-Control Performance | 20% | Evaluate knockdown speed, foam suppression, persistence, and re-foaming behavior under actual temperature, agitation, pH, and solids conditions. Screening trials commonly test concentrations from approximately 10 to 1,000 ppm, depending on the process. | Silicone antifoams are highly efficient at low dosage, but the optimum dosage is process-specific. Excessive use can cause surface defects, deposits, or difficulties in coating and finishing operations. | Laboratory foam test results, side-by-side dosage trials, application data, and a written recommendation for initial and maximum dosage. |
| Viscosity and Dispersion | 10% | Request viscosity at a stated temperature and test whether the product disperses uniformly in the process. Commercial silicone antifoam products may range from low-viscosity emulsions to highly viscous compounds. | Viscosity affects pumping, metering, dilution, storage, and distribution throughout the production system. | Viscosity method and value, dilution instructions, dispersion test, pumpability information, and recommended mixing procedure. |
| pH, Temperature, and Process Compatibility | 15% | Verify performance across the actual operating window, including process pH, temperature, shear level, salts, surfactants, solvents, and solid content. | Antifoam performance can change significantly in alkaline, acidic, high-temperature, high-shear, or surfactant-rich systems. Compatibility testing helps prevent separation and loss of control. | pH range, operating-temperature guidance, high-shear stability data, freeze-thaw information for emulsions, and application-specific compatibility tests. |
| Quality Consistency | 15% | Choose a manufacturer able to provide consistent batch-to-batch appearance, solids or active-content control, viscosity, pH, and density within agreed specifications. | Stable quality is essential when the product is shipped across borders and used in repeat production. Variation can change dosage requirements and finished-product quality. | Certificate of Analysis for each batch, retained-sample policy, quality specification, change-control procedure, and manufacturing quality certification. |
| Regulatory and Safety Documentation | 10% | The supplier should support the destination market with current Safety Data Sheets, Technical Data Sheets, labels, transport information, and applicable regulatory declarations. | Documentation gaps can delay customs clearance, customer approval, workplace handling, and product registration. Requirements differ by destination and end use. | Current SDS, TDS, Certificate of Analysis, allergen or impurity statement when relevant, regulatory status, and food-contact or other sector-specific documents when applicable. |
| Packaging and Shelf Life | 5% | Common industrial pack sizes include approximately 20–25 kg pails or drums and about 200 kg drums, subject to product type and transport requirements. Shelf life is often 12–24 months but must be confirmed for each formulation. | Suitable packaging protects the emulsion or compound during storage and international transport. Clear shelf-life information helps buyers manage inventory and avoid expired material. | Packaging specification, net and gross weight, pallet configuration, storage temperature, shelf-life statement, lot coding, and handling instructions. |
| Global Logistics Capability | 5% | Assess export experience, production capacity, order lead time, minimum order quantity, container-loading plan, and the ability to provide shipping documents accurately. | Reliable logistics reduce the risk of production interruptions caused by missed delivery windows, incomplete documents, or unsuitable transport conditions. | Indicative lead time, MOQ, Incoterms quotation, packing list, commercial invoice, certificate of origin when required, and shipment tracking process. |
| Technical Service and Trial Support | 5% | Prefer suppliers that can recommend dosage, dilution, injection point, mixing conditions, and troubleshooting steps based on the buyer’s process data. | Technical support can shorten qualification time and improve the chance of successful scale-up, especially when the buyer is changing formulation or production equipment. | Application guide, trial protocol, sample quantity, response time commitment, troubleshooting matrix, and post-trial technical report. |