Freezing solutions for different temperatures

 

Lowering Temperature (°C)

Weight proportion

+10-12

4 water + 1 potassium chloride

+10-15

1 water + 1 ammonium nitrate

+8-24

1 water + 1 sodium nitrate  + 1 ammonium nitrate

0-21

3 ice ground + 1 sodium chloride

0-34

1,2 ice ground +1 magnesium chloride (MgCl2.7 H2O)

0-39

1,2 ice ground +2 calcium chloride

0-55

1,4 ice ground + 1 calcium chloride

+15-77

Methanol or acetone + dry ice

+15-100

Diethyl ether + dry ice