Comparison of Emissions from 22% ethanol (E22) and 100% Hydrated ethanol (E100) with legal limits.
Parameter E22 E100 Legal Limits Brazil Legal Limits- India (Euro III/ Bharat III)
Carbon Monoxide (g/km) 0.76 0.65 2.00 2.3
Unburned Hydrocarbons (g/km) 0.13 0.15 0.3 0.20
Nox (g/km) 0.45 0.34 0.6 0.50
Aldehydes (g/km) 0.004 0.02 0.03  
Evaporates( g/test) 0.86 1.6    
Particulate matter (g/km) 0.08 0.02    
Sulphur Dioxide (g/km) 0.064 0    
 Source: CETESB (2004)