Brazing rods not compatible with all refrigerants

Hello there, sorry for bothering again. I was looking for some brazing rods and I realized that the documents sheet specifically stated that use with HC (R290, R600A) refrigerants was not advised. So out of curiosity I've started researching deeper and it seems like it's due to the phosphorous content which might become phospine with heating, but I'm not really sure why would this be a concern with these A3 class refrigerants in particular. Does anybody have a better understanding on this matter?
Thank you!