−S

N-H abs cm-

SO₃− abs cm-

C-H abs cm-

CH₂ abs cm-

IR spectrum

-

-

-

680, 1450

2995, 2880

Caster oil

1650

315, 350

1220, 1050

680, 1450

2995, 2880

Ammonium Sulfonated Caster oil