This remarkable soap was sufficiently solid; but it dissolved in hot water with extreme facility. It is called marine soap, because it washes linen with sea water.
A poppy-nut-oil hard soap consisted of—
| Soda | 7 | |
| Oil | 76 | |
| Water | 17 | |
| 100 | [58] |
[58] My own experiments. See [Fats], [Oils], and [Stearine].
The soap known in France by the name of soap in tables consists, according to M. Thenard’s analysis, of—
| Soda | 4 | ·6 |
| Fatty matter | 50 | ·2 |
| Water | 45 | ·2 |
| 100 | ·0 |
M. D’Arcet states the analysis of Marseilles soap at—
| Soda | 6 | |
| Oil | 60 | |
| Water | 34 | |
| 100 |
SOFT SOAP.
The principal difference between soaps with base of soda, and soaps with base of potash, depends upon their mode of combination with water. The former absorb a large quantity of it, and become solid; they are chemical hydrates. The others experience a much feebler cohesive attraction; but they retain much more water in a state of mere mixture.