E mohiotia ana ano ko te morphin, he wai hinuhinu kore tae i te pāmahana rūma. Ira whakarewa -4.76 ℃, ira koropu 128.3 ℃. Kiato 1.0005g/cm3(20 ℃). Taupū Refactive 1.4548. Ira hiko 38℃ (kapua tuwhera). Miscible ki te wai, acetone, benzene, ether, waipiro, ethylene glycol, hinu linseed, hinu turpentine, hinu castor. He hygroscopic me te haukinia kakara.