DePHOS™ QSA-90 is a 75% active, high-foaming anionic phosphate ester in free acid form. It provides economical surfactant properties, including detergency, emulsification, and wetting, and can be used as a 1:1 replacement for more expensive 100% active phosphate esters. DePHOS™ QSA-90 is soluble in water, alcohols, and glycols, and dispersible in aliphatic, aromatic, and chlorinated solvents, but insoluble in mineral oil and other oils. Please submit a document request or general inquiry form if you’d like to access an SDS in another language.

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

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Technical Data

Identification & Functionality

Features & Benefits

HII Features

Applications & Uses

Properties

Physical Form
Soluble In
Appearance
Clear, Yellow viscous liquid
Dispersible in
Chlorinated Solvents, Aliphatic, Aromatic
Typical Properties
ValueUnitsTest Method / Conditions
Phosphoric Acid Content5.0 - 7.0%-
Density (at 25°C)approx. 1.09g/mL-
Specific Gravity (at 25°C)approx. 1.09
Draves Wetting (at 0.1% by Weight in Deionized water at Ambient Temperature)22Sec
Specifications
ValueUnitsTest Method / Conditions
Colormax. 3Gardner
Solid Content74 - 76%-
pH Value (10% in Deionized Water)max. 2.5--
Acid Value 1 (at pH 5.0 - 5.5)140 - 160--
Acid Value 2 (at pH 9.0 - 9.5)270 - 290--

Regulatory & Compliance

Technical Details & Test Data

Test data

Modified Ross-Miles Foam Height : Foam height was determined at ambient temperature at 0.1% by weight in deionized water via graduated cylinder shake test. DePHOS™ QSA-90 has nearly the same foam profile as DePHOS™ RA-60, which is a 100% active phosphate ester.

Modified Ross-miles Foam Height

 

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Hydrotrope Properties : The hydrotrope properties of DePHOS™ QSA-90 were compared to DePHOS™ RA-60 in various electrolyte solutions. Each sample was heated to the temperature at which the NPE-9 clouds out of solution. Test solutions consisted of 3.75% by wt. hydrotrope, 5.0% by wt. NPE-9, and 91.25% by wt. electrolyte solution.

Cloud Point Comparison

 

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Packaging & Availability

Regional Availability
  • North America