a

b

tg β [˚]

Correlation coefficient

Estimation of uncertainty

Refractive index

Methanol

−0.015

1.54

57.04

0.994

0.038

1.329

Ethanol

0.10

5.02

78.73

0.997

0.070

1.3611

Isopropanol

−0.013

5.62

79.96

0.997

0.073

1.377

Glycerol

−0.029

11.23

84.91

0.999

0.041

1.4593

N-butanol

0.0014

8.42

83.32

0.999

0.032

1.3973

Isobutanol

0.074

7.61

82.51

0.999

0.056

1.39908

Secondary butanol

−0.011

8.56

83.33

0.999

0.079

1.3761

Tertiary butanol

−0.10

7.75

82.64

0.998

0.092

1.3671

Ethylene glycol

−0.025

7.61

82.51

0.999

0.035

1.43854

N-hexanol

−0.16

17.69

86.76

0.999

0.15

1.4158