DePHOS H66 - 872 is a potassium salt of an organic phosphate ester. It functions as a hydrotrope, particularly in acid and alkaline systems where low foam is preferred.

Functions: Hydrotrope

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

Certifications & Compliance: California Proposition 65

End Uses: Acid Cleaners, Bottle Wash, Car Wash, Concrete Cleaners, Detergents, Detergents, Metal Cleaners

Ask EM Sullivan Questions

GS

VD

  • TypeDocument Name
View All Documents

Enhanced TDS

Identification & Functionality

Features & Benefits

HII Features
Product Features
  • Excellent caustic, alkaline electrolyte and acid stability
  • Hydrotrope for nonionic surfactants in alkaline and acid systems

Applications & Uses

Properties

Physical Form
Soluble In
Appearance
Clear, light yellow liquid (at 25°C)
Soluble in
Water, alcohols and glycols
Insoluble in
Solvents and oils
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)1.20 - 1.26g/ml-
Specifications
ValueUnitsTest Method / Conditions
Colormax. 4Gardner-
Active Contentmin. 50%-
pH Value (5% in DI water)8.0 -10.0--

Regulatory & Compliance

Technical Details & Test Data

Cloud Point Data

To determine hydrotrope capabilities of DePHOS H66 - 872, a series of cloud point tests were performed and compared to competitive phosphate esters and sodium xylene sulfonate. The hydrotropes were solubilized in caustic or alkaline electrolyte solutions to which a 9.5 mole nonyl phenol ethoxylate was added. Each sample was heated to the temperature at which the nonionic clouds out of solution. The higher the cloud point temperature, the more efficient the hydrotrope. The control is a 9.5 mole nonyl phenol ethoxylate in each caustic and alkaline electrolyte solution, with no hydrotrope added.

  • Hydrotrope Cloud Points DePHOS H66 - 872 vs. SXS-40 (1% NP-9, 1.5% Hydrotrope by weight)

DePHOS H66 - 872 - Cloud Point Data - 1
Hydrotope Cloud Point Comparison Data

  • Hydrotrope Cloud Points (1% NP-9, 1.5% hydrotrope)

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

SMP = Sodium Metasilicate Pentahydrate / TKPP = Tetrapotassium Pyrophosphate / SXS-40 = Sodium Xylene Sulfonate 40%

  • Hydrotrope Cloud Points (3% NP-9, 2.5% hydrotrope)

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

SMP = Sodium Metasilicate Pentahydrate / TKPP = Tetrapotassium Pyrophosphate / SXS-40 = Sodium Xylene Sulfonate 40%

  • Hydrotrope Cloud Points (5% NP-9, 3.75% hydrotrope)

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

  • Cloud Points of Test Solutions: 5% NPE-9, 3.75% Hydrotrope (by wt.), 91.25% Electrolyte

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

  • Cloud Points of Test Solutions: 1% NPE-9 + 1.5% Hydrotrope (as-is), 97.5% Electrolyte

​​​​​​​DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

Foam Height Data

Foam height was determined using a modified Ross-Miles graduated cylinder shake test. The data is presented in the following graphs compared to competitive phosphate esters and sodium xylene sulfonate.

  • Modified Ross Miles Foam Height (1% by weight in DI Water)

DePHOS H66 - 872 - Foam Height Data - 1

  • Modified Ross-Miles Foam Height (2% by weight in 5% active NaOH)

DePHOS H66 - 872 - Foam Height Data - 1

  • Modified Ross-Miles Foam Height (1% by weight in 5% active Phosphoric Acid)
  • Hydrotrope Foam Heights (1% hydrotrope in DI water)

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

  • Hydrotrope Foam Heights (2% hydrotrope in 5% active NaOH)

DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

  • Hydrotrope Foam Heights (2% hydrotrope in 5% active phosphoric acid)​​​​​​​

​​​​​​​DePHOS H66 - 872 - Hydrotrope Cloud Point Comparison - 1

Packaging & Availability