Ink oils or “solvents” used in lithographic inks are high boiling, low vapor pressure hydrocarbons. Ink oil is composed principally of normal paraffin and naphthenic fractions of a petroleum distillate. These oils possess a vapor pressure of less than 0.1 mm Hg at 29 deg C. Sheet fed ink oils usually have initial boiling points greater than 180 deg C and boiling ranges extending up to 280 deg C. Non heat set web offset ink oils have initial boiling points greater than 260 deg C and boiling ranges extending up to 320 deg C.

Technical Specification

Sr. No.CHARACTERISTICSTEST METHODGRADE 55GRADE 56GRADE 57UNIT
1ColorIS : 1967 P : 120.0 – 0.50.0 – 0.50.0 – 0.5ASTM
2AppearanceVisualClear to slight pale liquidClear to slight pale liquidClear to slight pale liquid
3Density @ 30°CIS : 1448 P : 160.81 Max0.82 Min0.83 Maxgm/ml.
4Flash PointIS : 1992 P : 6975 Min100 Min120 Min°C
5Aromatic ContentIS : 1448 P : 481 – 181 – 181 – 18%
6Mixed Aniline PointIS : 1448 P : 0378 – 8378 – 8378 – 83°C
7K. Viscosity @ 37.8°CIS : 1448 P : 252.0 Max3.0 Max4.0 MaxCst
8Boiling RangeIS : 1448 P : 18As under As under As under
IBP180 Min230 Min260 Min
DP260 Max280 Max320 Max