Akrowax™ 145 is a fully refined paraffin wax derived from petroleum. It is a hard, white crystalline material. The high degree of purity and low odor makes this wax suitable for many applications, including food packaging. Resistance to most acids and alkalis is very good. Oxidation can occur, particularly under prolonged storage at high temperatures. Akrowax™ 145 is used in rubber to give ozone resistance. It inhibits cracking and frosting in NR, SBR, CR and NBR. Ozone is active in the 0°C to 50°C range; 145 wax is most effective at the higher end, approximately 20°C to 40°C. Use Akrowax 130 for lower temperatures; Akrowax 5073 for higher temperatures (or a blended wax for full-range protection).