GRADE DESIGNATION | MOISTURE and insoluble impurities percent by weight (not more than) | Colour on Lovibond scale* in 1/4-inch cell expressed as Y ± 5 R (not deeper than) | Specific gravity at 30C/30C | Refractive Index at 40C | Clarity in height of column of oil in cms. Through which Bourgeoise print can be read in 100 ml. Nessler tube | Optical rotation at 19.5 to 20.5 on 1. dm thickness (min.) | Critical solution temperature in alcohol (below) | Saponification value | Iodine value method | Acid value (maximum) | Acetyl value (minimum) | Unsaponifiable matter percent by weight (max.) |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
Medicinal | 0.25 | 3.5 (in 1″ cell) | 0.954 TO 0.960 | 1.4700 TO 1.4740 | 10.0 | +3.5 | 0 c | 176 to 187 | 82 to 90 | 2.0 | 143 | 0.8 |
Firsts Special | 0.25 | 3.7 (in 1″ cell) | 0.954 TO 0.960 | 1.4700 TO 1.4740 | 10.0 | — | 0 c | 176 to 187 | 82 to 90 | 2.0 | 143 | 0.8 |
Commercial grade – I | 0.75 | 30.0 (in 1/4″ cell) | 0.954 TO 0.960 | 1.4700 TO 1.4740 | 5.0 | — | — | 176 to 187 | 82 to 90 | 4.0 | 143 | 1.0 |
Commercial grade – II | 1.00 | 40.0 (in 1/4″ cell) | 0.954 TO 0.960 | 1.4700 TO 1.4740 | — | — | — | 176 to 187 | 82 to 90 | 6.0 | 143 | 1.0 |
Description
- THE OIL SHALL BE THE REFINED FIXED OIL obtained by cold expression of Caster Seed (Ricinus communis)
- The oil shall be the refined fixed oil obtained from castor seed (Ricinus communis)
- The oil shall be fixed oil obtained from castor seed (Ricinus communis)
- The oil shall be fixed oil obtained from castor seed (Ricinus communis)
General Requirements
- The oil shall be clear and free from admixture with other oils or substances and also free from sediments, suspended matter, added colouring and flavouring substances.
- Solubility – The oil shall be soluble in 2.5 parts of ethyl alcohol (95% V/V). Further it shall be miscible with absolute ethyl alcohol with chloroform with solvent ether and with glacial acetic acid.
- Identification :- The oil shall be miscible with half its volume of light petroleum (boiling range 400 to 600C) and is only partially soluble in two volumes.
- The oil shall be clear and free from admixture with other oils or substances and also free from sediments, suspended matter, added colouring and flavouring substances.
- The oil shall be free from admixture with other oils or substances and also free from sediments and suspended matter.
- The oil shall be free from admixture with other oils or substances and also free from sediments and suspended matter.