DePHOS™ 8028 is an anionic 80% active, potassium salt of ethoxylated, phosphated 2-ethylhexanol with CAS# 68238-84-6. This low- to-moderate foaming, multifunctional phosphate ester exhibits a wide variety of properties including multi-metal corrosion inhibition, lubricity, detergency, wetting, hydrotroping, and scale inhibition. Please submit a document request or general inquiry form if you’d like to access an SDS in another language.

Chemical Name: Poly(oxy-1,2-ethanediyl), α-(2-ethylhexyl) -ω-hydroxy-, phosphate, Potassium Salt

CAS Number: 68238-84-6

Chemical Family: Organophosphates, Phosphate Esters, Phosphorous-based Compounds

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Technical Data

Identification & Functionality

Features & Benefits

Applications & Uses

Properties

Physical Form
Soluble In
Appearance
Clear to slightly hazy liquid
Dispersible in
Oils, Aliphatic solvents
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)approx. 1.2g/mL-
Specific Gravity (at 25°C)approx. 1.2
Ross-miles Foam Height (Initial, at 0.1% in Deionized Water at Ambient Temperature)min. 100mls-
Ross-miles Foam Height (30 seconds, at 0.1% in Deionized Water at Ambient Temperature)63mls-
Ross-miles Foam Height (60 seconds, at 0.1% in Deionized Water at Ambient Temperature)55mls-
Ross-miles Foam Height (2 minutes, at 0.1% in Deionized Water at Ambient Temperature)39mls-
Draves Wetting (at 0.1% by Weight in Dionized Water)22seconds
Specifications
ValueUnitsTest Method / Conditions
Activitymin. 79%-
pH Value (5% in Deionized Water)6.5 - 7.2--
Colormax. 1Gardner
Moisture Contentmax. 20%-
Solubility Data
ValueUnitsTest Method / Conditions
Water (10% by weight)Complete--
Glycols (10% by weight)Complete--
Alcohols (10% by weight)Complete--
Aromatic Solvents (10% by weight)Complete--
Chlorinated Solvents (10% by weight)Complete--

Technical Details & Test Data

Technical Information

Hydrotrope Properties

  • DePHOS 8028 was evaluated for its ability to hydrotrope NPE-9 into several alkaline electrolytes.
  • 3.75% by weight of DePHOS 8028 was added to an electrolyte solutions followed by 5% by weight NPE-9.
  • The solution was heated until reaching the cloud point, the temperature at which the NPE-9 clouds out of solution.

Hydrotrope Test 3.75% DEPHOS 8028 / 5% NPE-9

 

Dephos 8028 - Technical Information - 1

 

Hydrogen Peroxide Stability

  • 2% DePHOS 8028 by weight was added to varying concentrations of hydrogen peroxide and monitored over time.
  • After 12 weeks at ambient temperature, very little peroxide degradation was observed.
  • All samples were clear and free from precipitate initially as well as at the end of the test period.

Dephos 8028 - Technical Information - 1

% Hydrogen Peroxide VS. Time 2% DEPHOS 8028 Added

Corrosion testing using DEPHOS 8028

  • DePHOS 8028 is an effective corrosion inhibitor suggested for use in aqueous systems.
  • Metal coupons were partially submerged in a solution containing from 0.25% -1% by weight DePHOS 8028 in hard water (100 ppm as CaCO3 and 71 ppm as chloride) and stored in sealed glass jars at room temperature.
  • The top halves of the panels were exposed to the vapor phase.
Type of Metal Weight % Result
12 months test results
Bare Aluminum 0.25%, 0.50%, 1% No rusting/darkening of panels in liquid or vapor phase.
Steel,Cold-Rolled 0.25% No rust/darkening of panels in liquid phase. Slight rusting of panels in vapor phase.
Steel,Cold-Rolled 0.50% & 1% No rusting/darkening of panels in liquid or vapor phase.
22 months test results
Copper 0.5% No rust/darkening of panels in liquid phase. Slight rusting of panels in vapor phase.
Copper 1.0% No rust/darkening of panels in liquid phase. Some copper leaching noted in liquid phase. Slight rusting of panels in vapor phase.
Brass 0.5%, 1% Some rusting of panels in liquid phase. Some darkening/ rusting in vapor phase.

 

Packaging & Availability

Regional Availability
  • North America