Table 3 Important physical–chemical properties of diesel, Roselle and its blends.

From: Experimental and empirical investigation of a CI engine fuelled with blends of diesel and roselle biodiesel

Fuel

Testing method

B0

LA20

LA40

LA60

LA80

LA100

Density (@20°C) (kg/m3)

ASTM D4052

830

838.2

849.6

859.2

868.6

877

Kinematic viscosity (@40°C) (mm2/s)

ASTM D445

2.9

3.24

3.5

4.25

4.85

5.64

Heating value (MJ/ kg)

ASTM D4809

42.5

41.6

40.7

40.16

39.44

38.74

Cetane number

ASTM D613

48

48.8

49.67

50.45

51.25

52.3

Flash point (°C)

ASTM D93

50

75.2

94.4

116.7

135.2

159.2

C%

ASTM D5291

86.14

84

83.09

81.52

80.10

78.71

H%

ASTM D5291

13.86

13.49

13.12

12.75

12.29

12.12

O%

ASTM D5291

0.004

2.25

4.02

5.71

7.54

9.23

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