Does hpma have good tolerance in high temperature in boiler system?

HPMA is a short name for Hydrolyzed Polymaleic Anhydride Cas No. 26099-09-2. It has good tolerance in high temperature(330℃). HPMA has obvious threshold effect under high temperature (350℃) and high pH（8.3）level, suitable to be used in alkaline water system or built with agents. It has good scale inhibition against carbonate and phosphate scales under temperature 300℃ with effective time as long as 100 hours.