Castor oil PP is Castor oil bleached to British Standard Specification. It is Yellow viscous liquid free from suspended matter and insoluble in water.
| Characteristics | Range | Test method |
| Appearance | Pale Yellow | Visual |
| Lovibond Color (1” cell) | 2.0Y+0.1R Max | AOCS Cc-13b-45 (97) |
| Acid Value | 1.0 Max | AOCS cc 5a-40(97) |
| Specific Gravity @ 20 c | 0.954 to 0.967 | BIS |
| Iodine value | 82 to 90 | IS548 (part-1) 1964 |
| Hydroxyl Value | 160 Min | AOCS cd 13-60(97) |
| Specification Value | 177-185 | AOCS cd 3-25(97) |
| Moisture Volatiles | 0.25% Max | AOCSca 2c-25(97) |