BioDiesel specifications

Draft Specification for PR EN 14214 - The pure biodiesel standard.

Table 1 - Generally applicable requirements and test methods.

Limits

Property	Unit	Minimum	Maximum	Test method ^a
Ester content	% (m/m)	96.5 ^q		prEN 14103 ^d
Density at 15°C ^b	kg/m ³	860	900	EN ISO 3675 EN ISO 12185
Viscosity at 40°C ^c	mm² /s	3,5	5,0	EN ISO 3104
Flash point	°C	above 101	-	ISO / CD 3679 ^e
Sulphur content ^l	mg/kg	-	10
Carbon residue (on 10% distillation residue) ^g	% (m/m)		0,3	EN ISO 10370
Cetane number		51,0		EN ISO 5165
Sulphated ash content	% (m/m)	-	0,02	ISO 3987
Water Content	mg/kg	-	500	EN ISO 12937
Total contamination ⁿ	mg/kg		24	EN 12662
Copper strip corrosion (3h at 50 °C)	rating	Class 1	Class 1	EN ISO 2160
Thermal Stability ^j
Oxidation stability, 110°C	hours	6		pr EN 14112 ^k
Acid value	mg KOH/g		0,5	pr EN 14104
Iodine value			120	Pr EN 14111
Linolenic acid methyl ester	% (m/m)		12	pr EN 14103 ^d
Polyunsaturated (>= 4 double bonds) methyl esters ^r	% (m/m)		1
Methanol content	% (m/m)		0,2	pr EN 14110 ^l
Monoglyceride content	% (m/m)		0,8	pr EN 14105 ^m
Diglyceride content	% (m/m)		0,2	pr EN 14105 ^m
Triglyceride content	% (m/m)		0,2	pr EN 14105 ^m
Free glycerol ^b	% (m/m)		0,02	pr EN 14105 ^mpr EN 14106
Total glycerol	% (m/m)		0,25	pr EN 14105 ^m
Alkaline metals (Na+K) ⁿ	mg/kg		5	pr EN 14108 pr EN 14109
Phosphorus content	mg/kg		10	pr EN14107 ^p

^a See also 5.5.1

^b See also 5.5.2

^c If CFPP is —20oC or lower, the viscosity measured a —20oC shall not exceed 48 mm2/s. in this case, EN ISO 3104 is applicable without the precicion data.

^d CEN/TC 307 publication of NF T 60-703: 1997

^e Apparatus equipped with a thermal detection device shall be used.

^f Suitable test methods to be proposed by CEN/TC 19

^g ASTM D 1160 shall be used to obtain the 10% distillation residue.

^h Pending development of a suitable method by CEN/TC 19, EN 12662 shall be used.
The precision of EN 12662 is however poor for FAME products.

^j Suitable test method and limit to be proposed by CEN/TC 19.

^k CEN/TC 307 publication of ISO 6886 modified.

^l CEN/TC 307 publication of NF T 60-701 (procedure A) and DIN 51608 (procedure B).

^m CEN/TC 307 publication of NF T 60-704: 1997.

ⁿ Extension of this to cover additional elements, e.g. Ca and Mg to be considered.

^p CEN/TC 307 publication of NF T 60-705: 1997.

^q Attention is drawn to 5.2

^r Suitable test method to be developed.

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