Thickness of Plexiglass for high pressure

[chem55]

Hi,

Could you pls suggest me how can I calculate pressure vessel thickness which is made of Plexiglas, if the pressure is 150 psi at 40deg cel?

I found the formula from coulson & Richardson Vol.6 but I need Design stress of plexiglass at 40 deg cel to calculate the thickness.

Can anyone suggest me what is the design stress at 40deg cel for plexiglas or what thickness should i go for?

Thanks,
Chem55