Days Sodium Metaborate, 1 wt%
Acrylic Acid, wt%
0.2 0.3 0.4 0.5 0.6 0.7
pH
9.59 8.94 8.40 7.61 6.81 6.09
1 cld - - - - -
5 - - - - - -
10 ppt ppt ppt ppt - -
20 ppt ppt ppt ppt - -
30 ppt ppt ppt ppt ppt -
ppt denotes precipitation, - denotes clear solution, cld denotes cloudy
Table 3: Summary of the acid-alkali compatibility test during 30 days at 80oC.