FIELD: chemistry.
SUBSTANCE: coolant contains propylene glycol aqueous solution and sodium chloride in concentration of 1.6-3.2 mol/kg, component ratio being as follows: propylene glycol 9.0-27.4 wt.%, sodium chloride 15.8-8.6 wt.%, water -remainder. Environmentally safe and reliable water-propylene glycol coolant can be used at lower temperatures.
EFFECT: lower viscosity and cost of coolant.
1 cl, 1 ex, 2 tbl
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