Physico-chemical parameters

Values obtained

Standars/Literature

Salt content (%)

P₁

P₂

P₃

P₄

0.442 ± 0.020

0.414 ± 0.002

0.414 ± 0.019

0.443 ± 0.019

ISO: 684-1974

Smooth soap: 0.4 - 0.6

SW Award: 0.4 - 0.6

SDT: 0.3 - 0.5

Alkali content (%)

P₁

P₂

P₃

P₄

0.045 ± 0.005

0.048 ± 0.002

0.043 ± 0.002

0.049 ± 0.013

ISO: 684-1974

Smooth soap: 0.08 - 0.18

SW Award: 0.08 - 0.18

SDT: 0.04 - 0.08

pH

P₁

P₂

P₃

P₄

9.02 ± 0.05

9.03 ± 0.02

9.01 ± 0.02

9.04 ± 0.03

8 - 10

Marseille soap

Humidity (%)

P₁

P₂

P₃

P₄

12:815 p.m. ± 0.05

12.576 ± 0.02

12.675 ± 0.03

11.854 ± 0.03

ISO: 684-1974

Smooth soap: 30 - 33

SW: 21 - 23

TDMS: 11 - 13