Quenchant Polymer


Market Served



Product Description

UCON® Quenchant A and A-NN (non-nitrite) are nonflammable polymeric quenchants manufactured by The Dow Chemical Company. They are aqueous solutions of a liquid organic polymer and a corrosion inhibitor. The organic polymer is soluble in water and produces a homogenous solution. At temperatures above 165°F (74°C), however, the polymer separates from water as an insoluble phase. UCON Quenchant A-NN is formulated with a proprietary non-nitrite corrosion inhibitor that is completely compatible with UCON Quenchant A without nitrosamine formation. Analogous quenching performance is obtained with either UCON Quenchant A or A-NN. When hot metal is quenched in a diluted solution of UCON Quenchant A or A-NN, a film of the liquid organic polymer is deposited on the surface of the hot metal. The rate at which the metal is cooled is governed, in part, by the thickness of the polymer-rich film. The thickness of this film is controlled by the concentration of UCON Quenchant A or A-NN in the quench bath. The cooling rate is also controlled by adjusting the quench bath temperature and/or the rate of agitation. These parameters, along with product orientation, allow UCON Quenchant A and A-NN to function uniformly in the heat transfer range from water to medium-speed oils.

Featured Benefits
  • Minimize replacement control because of low deterioration and/or oxidation rate. The major make-up requirement is for water lost by evaporation.
  • Eliminate the smoke, soot and residues common to oil quenchants. Equipment maintenance and plant cleanliness are easier to maintain.
  • Soluble in water and resistant to bacterial growth
  • Not affected by freezing/thawing in any way
Typical Properties
Flash Point, PMCC None
Fluid Type Polymer quench
Pour Point -1°F (-19°C)
Refractometer Multiplier (IFT 40-ATAGO PAL-1) 2.0/1.78
Rust Protection, ASTM 665B A&B Pass
Specific Gravity, 68°F (20°C) 1.095
Viscosity (100°F) 2375 - 2900 SUS
Weight, 68°F (20°C) 9.13 lbs/gal.