DeTROPE SA-45 is a 45% active sodium alkanoate solution in water. It is highly effective, multifunctional, and low foam. Recommended for cleaners, it is chlorine stable and also demonstrates wetting and corrosion inhibition properties.

Chemical Family: Alkanoates, Sodium Salts

Labeling Claims: 1,4-Dioxane-free, APE-free, Amine-free, Aromatic-free, Biodegradable, Non-Phenolic, Phosphate-free, Solvent-free

Certifications & Compliance: California Proposition 65, Clean Water Act (CWA) Certified, Comprehensive Environmental Response, Compensations & Liability Act (CERCLA), Design for Environment (DfE), EPA Registered, SARA 313

Applicable Processes: Mercerization

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Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
CASE Ingredients Features
HII Features
Industrial Additives Features
Product Features
  • Chlorine stable (up to 5% active NaOCl)
  • Excellent solubilizer for nonionics in alkaline and electrolyte systems
  • Excellent alkali and electrolyte stability
  • Approved for use as inert in non-food pesticide formulations
  • Contributes wetting properties
  • Meets EPA DFE direct release criteria
  • 44% active
  • Chlorine stable hydrotrope offering very low, fast breaking foam
  • Does not contain 1,4-dioxane

Applications & Uses

Properties

Physical Form
Soluble In
Appearance
Clear, water white liquid (at 25°C)
Type
Anionic
Soluble in
10% sodium hydroxide, 20% potassium hydroxide, Water, alcohols and glycols, Silicates, phosphates and carbonates
Insoluble in
Solvents and oils
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)approx. 1.05 g/ml-
Specifications
ValueUnitsTest Method / Conditions
Colormax. 1Gardner-
Active Content43.5 - 46.5%-
pH Value (as - is)9 - 11--

Regulatory & Compliance

Technical Details & Test Data

Foam Height Data

The foaming properties of DeTROPE SA-45 were determined via modified Ross-Miles, graduated cylinder shake test. The foam heights are presented in the following charts compared to sodium xylene sulfonate (SXS-40) and are reported as millimeters of foam present initially, at 30 seconds, at 60 seconds and after 2 minutes.

  • Hydrotrope Foam Heights (1% surfactant 'as-is' in DI water)

DeTROPE SA - 45 - Foam Height Properties - 1

  • Hydrotrope Foam Heights (2% surfactant 'as-is' in 5% active NaOH)

DeTROPE SA - 45 - Foam Height Properties - 1

Cloud Point and Foam Height Data

To determine hydrotroping capabilities, a series of cloud point tests were performed. The hydrotrope was solubilized in caustic or alkaline electrolyte solution to which a 9.5 mole nonyl phenol was added. Each sample was heated to the temperature at which the non- ionic clouds out of solution. The cloud point temperatures are reported in the following charts. The higher the cloud point temperature, the more efficient the hydrotrope. The control is a 9.5 nonyl phenol in each caustic and alkaline electrolyte solution with no hydrotrope added. The hydrotroping capabilities of DeTROPE SA - 45 at higher levels of NP-9.5 show similar trends.

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

DeTROPE SA - 45 - Hydrotrope Cloud Point Properties - 1

Key:

  1. NaOH = Sodium Hydroxide
  2. SMP = Sodium Metasilicate Pentahydrate
  3. TKPP = Tetrapotassium Pyrophosphate
  4. SXS-40 = Sodium Xylene Sulfonate 40% active
  • Hydrotrope Cloud Points (1% NP-9, 1.5% hydrotrope)

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

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

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

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

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

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

  • Hydrotrope Foam Heights (1% hydrotrope in DI water)

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

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

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

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

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

Hydrotrope Cloud Point Comparison (5% NP-9 w/ 3.75% hydrotrope (as-is))

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

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1

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

DeTROPE SA - 45 -  - 1

Dynamic Surface Tension

Dynamic surface tension for DeTROPE SA - 45 was conducted at 1.0% and 2.0% by weight in deionized water at ambient temperature. Compared to SXS-40 at 2.0% by weight, DeTROPE SA - 45 provides considerably lower surface tension.

  • Dynamic Surface Tension at Ambient Temperature

DeTROPE SA - 45 - Dynamic Surface Tension - 1

DeTROPE SA - 45 - Dynamic Surface Tension - 1

Corrosion Inhibition Properties

Metal coupons were partially submerged in a solution containing from 0.25% - 1.0% by weight of DeTROPE SA - 45 in hard water (100ppm as CaCO₃ and 71ppm as CaCl₂) and stored in sealed glass jars at room temperature. The top halves of the panels were exposed to the vapor phase.

90 Day Results

Steel Panels: Q-Panel – Type RS – low carbon, cold-rolled steel, 0.063” thick, 1⁄2 hard

DeTROPE SA - 45 - Corrosion Inhibition Properties - 1