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.