Defoamer agent price

Defoamers are generally categorized into Silicone-based, Non-Silicone (Mineral Oil), and Polyether-based types. You should choose based on your specific industry: Silicone-based agents are highly efficient for general industrial wastewater and textile dyeing due to their low surface tension, while Polyether-based defoamers are preferred for fermentation and food processing because they are non-toxic and have excellent high-temperature stability. For paints and coatings, Non-Silicone types are often better to avoid surface defects like 'fish-eyes'.

Focus on Solid Content (typically 10%-30% for emulsions), pH value compatibility with your system, and Viscosity. A critical metric is the Defoaming and Antifoaming Persistence; you should request a 'Shake Ring Test' or 'Ross-Miles' report to see how quickly it eliminates foam and how long it prevents new foam from forming under high-shear or high-temperature conditions.

Ensure the supplier provides a valid MSDS (Material Safety Data Sheet) and TDS (Technical Data Sheet). For food or pharmaceutical applications, FDA or EFSA compliance is mandatory. For general exports to Europe, check for REACH registration, and for the US, ensure the chemicals are listed on the TSCA inventory to avoid customs seizures.

Do not judge by the unit price per kg alone. A high-concentration defoamer (e.g., 50% active content) may be more expensive per kg but requires a much lower dosage (e.g., 0.1% vs 0.5%), leading to a lower Total Cost of Operation (TCO). Always calculate the cost based on the volume of liquid treated rather than the weight of the chemical purchased.

Defoamers are often liquids or emulsions, which are classified as 'Sensitive Goods'. You must ensure the supplier provides a Certification for Safe Transport of Chemical Goods. If the product is water-based, there is a risk of emulsion breaking (stratification) during long-term sea freight in extreme temperatures; always request reinforced IBC tanks or plastic drums and verify the product's freeze-thaw stability.

Prioritize 'Audited Suppliers' who have undergone on-site inspections by third parties like SGS or Intertek. Check if the supplier has ISO 9001 (Quality Management) and ISO 14001 (Environmental Management) certifications. Request a pre-shipment sample from the same batch intended for the bulk order to perform a 'fingerprint' comparison upon arrival.

Chemical prices are heavily influenced by raw material costs (e.g., silicone oil or petroleum prices). Negotiate based on annual volume contracts rather than spot buys to lock in better rates. Ask for tiered pricing (e.g., 1-5 tons vs. 20ft container load) and inquire if the supplier offers OEM/Private Labeling if you are a distributor, as this adds value beyond the base price.

Use Secured Trading Services provided by platforms like Made-in-China.com to ensure payment is only released after the Bill of Lading (B/L) is issued. For first-time orders, consider a Third-Party Loading Inspection to verify that the quantity and packaging integrity match the proforma invoice before the container is sealed.