TERGITOL? NP-4 Surfactant
Product Information

Chemical        Name: Nonylphenol Ethoxylate
Description    Surfactant Type: Nonionic
Benefits ? Excellent oil-soluble surfactant
? Low HLB emulsifier
? Low odor
? Exceptional handling properties
Applications

? Cleaners & degreasers
? Dry cleaning
? Dispersant for petroleum oil

Typical Physical Properties
Actives,       wt% 100
Cloud Point ⁽¹⁾  Insoluble
HLB ⁽²⁾        8.9
Moles EO        4
Pour Point⁽³⁾    -28
Appearance      Pale yellow liquid
pH, 1% in 10:6 isopropanol/water       7.2
Viscosity at 25°C (77°F), cP        238
Density at 20°C (68°F), g/mL        1.027
Flash Pt, Closed Cup, ASTM D93        218°C 425°F
(1) Cloud point: °C, 1 wt% actives aqueous solution
(2) HLB Range: <10 w/o emulsifier, > 10 o/w emulsifier, 10-15 good wetting, 12-15 detergents
(3) Pour point: °C
Typical Performance Properties
CMC⁽⁴⁾              Insoluble
Surface Tension⁽⁵⁾      Insoluble
Foam Height⁽⁶⁾         Insoluble
(4) Critical Micelle Concentration: ppm at 25°C
(5) Surface tension: dynes/cm at 1% actives, 25°C
(6) Ross-Miles foam height: mm at 0.1 wt% actives, 25°C, initial / 5 minute
Solubility and Compatibility
? Insoluble in water
? Soluble in chlorinated solvents and most polar and non-polar solvents and oils
? Chemically stable in the presence of dilute acids, bases and salts
? Compatible with soaps, anionic and other nonionic surfactants, and many organic solvents