Biodiesel quality standards and properties

Biodiesel quality standards and properties:

Index	Units	Germany DIN 51606 (1997)	American ASTM6751 (2001)
Density	g/cm 3	0.875-0.90	--
Cooking value CCR (100%)	%	Max 0.05	Max 0.050
Ash content	%	Max 0.02	Max 0.020
Total sulfur	%	Max 0.01	Max 0.05
Cetane number	--	Min 49	Min 40
Flashing point	Celsius degree	Min 110	Min 100
For copper corrosion performance	Degree	1	No. 3b max
Kinematic viscosity, 40 0 C	mm 2 /s (cSt)	3.5-5.0	1.9-6.0
Neutralization value	Mg KOH/g	Max 0.5	Max 0.8
Free glycerin	%	Max 0.02	Max 0.02
Total glycerin	%	Max 0.25	Max 0.24
Cold filter plugging point(CFPP)	Summer (Centigrade)	Max 0.0	--
Cold filter plugging point(CFPP)	Winter ( Centigrade)	Max -15	--