SURFADOL® 518

Nonionic Molecular Defoamer

SURFADOL® 518

SURFADOL® 518 is a very compatible molecular defoamer based on Gemini surfactant technology. Free of silicone and silica. Offers additional dynamic wetting properties.

Composition

18% 2,5,8,11-Tetramethyldodec-6-yne-5,8-diol in dipropylene glycol and ethylene glycol 

CAS No: 68227-33-8

Typical properties

Chemical familyAcetylenic diol; Nonionic Defoamer; Gemini surfactant
AppearanceLight yellow liquid
Density at 25°C, g/cm 31.03
Solubility in waterSlightly soluble
Suggested use level0.1% – 1.5% of total formulation weight

COA specifications

Test ItemStandard
AppearanceLight yellow liquid
APHA Color (Pt-Co)≤350
Density at 25°C, g/cm31.000-1.100

Special properties

  • • Nonionic acetylenic diol defoamer
  • • Suitable for water-based systems
  • • Provides additional dynamic wetting properties
  • • Effectiveness against macro- and micro-foam in combination with high compatibility
  • • highly recommended in combination with classical silicone-based defoamers
  • • Silicone-free, APEO free, non-toxic

Examples of application

  • • water-based printing inks   
  • • metalworking fluids     
  • • semiconductor cleaning and processing
  • • fountain solutions        
  •  • waterborne coatings      
  •  • waterborne coatings
  • • lamination adhesives     
  •  • dye and pigment synthesis   
  • • concrete and motars

Similar Defoamerss

Apart from SURFADOL® 518, SURFADOL® 510 (CAS#68227-33-8) series defoamers include the following liquid preparations.

SURFADOL® defoamerPhysical formComposition
SURFADOL® 532Light yellow liquid32% wt 510 in dipropylene glycol
SURFADOL® 550PGLight yellow liquid50% wt 510 in propylene glycol
SURFADOL® 550BCLight yellow liquid50% wt 510 in 2-butoxyethanol
SURFADOL® 550DLight yellow liquid50% wt 510 in 2-ethylhexanol
SURFADOL® 550PMLight yellow liquid50% wt 510 in propylene glycol methyl ether

Processing instructions

  • • Addition to the coating as supplied or as a predilution is possible.
  • • Can be introduced in the grind and let-down stage.

Package and storage

The standard package for SURFADOL® 518 is 180kg drums, 4 drums/pallet.

The product is also available in 950kg IBCs and 20kg pails.

Keep containers tightly closed in a dry, cool, and well-ventilated place. Product is freeze-thaw stable; if it phase separates or freezes at colder temperatures, warm container to 40°C and mix thoroughly before use.

When stored in an original unopened packaging, the product has a shelf life of 48 months from the date of manufacture.

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