Page 642 - The Central Motor Vehicles Rules, 1989

614 THE CENTRAL MOTOR VEHICLE RULES, 1989 ANNEXURE IV-O

Copper strip corrosion for 3 hrs @ 50˚C, max. Rating Class 1 Class 1
Olefin content, max % volume 21 18

Aromatics content, max % volume 35 35
Oxygen content, max % mass 2.7 2.7
Oxygenates Content :
(a) Methanol, max % volume 3 3
(b) Ethanol, max % volume 5 5
(c) Iso-propyl alcohol, max % volume 10 10
(d) Iso-Butyl alcohol, max % volume 10 10
(e) Tertiary-butyl alcohol, max % volume 7 7

(f) Ethers containing 5 or more carbon atoms % volume 15 15
per molecule, max
(g) Other oxygenates, max % volume 8 8
Note :
1.Test methods and other provisions details along with the requirements as
given above shall be issued by Bureau of Indian Standards.
2.Petrol of 89 RON and 79 MON and having all other properties as the
unleaded regular grade indicated above shall also be available for meeting
requirements of the older vehicles which will be conforming to pre-Euro
III equivalent vehicular emission norms.
3.Type test for Phosphorous content in petrol shall be introduced.
4.These standards specifications have been finalized by the Expert
Committee after discussions with the automobile and oil industry as per
Auto Fuel Policy.
ANNEXURE IV-O
[Refer Rule 115(15)] ANNEXURE IV-O
SPECIFICATION OF COMMERCIAL DIESEL FUEL

Characteristics Unit Requirements
Ash, max % mass 0.01
Carbon Residue (Ramsbottom) on 10% residue, % mass 0.3
max without additives
Cetane Index (CN), min 51
Cetane Index (CI), min 46
Distillation :
95% vol. recovery at ˚C, max ˚C 360

Flash point :
(a) Abel, min ˚C 35