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Soap
Soap
has been with us in one form or another for thousands of years.
The story goes that in Rome in around 1,000 B.C. at a place called
Sapo Hill, the women were washing their clothes in a small tributary
of the river Tiber, below a religious site where animal sacrifice
took place. They noticed that the clothes became clean upon contact
with the soapy clay which was dripping down the hill and into the
water. It was noticed later that this cleansing agent was formed
by the animal fat soaking through the wood ashes and into the clay
soil.
Strangely,
in the first century A.D., the Romans are credited with the making
of a soap-like substance using urine. The ammonium carbonate in
the urine was reacted with oils and fat in wool to form this 'soap'.
During
the Eighth Century the Spanish and Italians began making what was
more like modern soap from Beech Tree ash and Goat fat, whilst the
French are credited with replacing the animal fat with Olive oil.
In
England during the 17th century under King James I, soap makers
were given 'special privileges' and the soap industry started developing
more rapidly,
although soaps were generally still made using caustic alkalies
such as potash, leached from wood ashes and from carbonates from
the ashes of plants or seaweed. The soaps made in this way were
harsh and often rather unpleasant.
Soap
as we know it today did not come about until the 18th century, when
Nicholas Le Blanc, a Frenchman, discovered a reliable and inexpensive
way of making sodium hydroxide (caustic soda), or lye as it is known
to the soap maker, which forms the base with which soaps are made
to this day.
Further
developments in soap making were pioneered in Britain during the
late 18th century with the invention of 'Transparent' soap by Andrew
Pears, the son of a Cornish farmer. This refined soap was known
then as it is now as Pears Transparent Soap.
Over
the years and to the present day, opaque soaps have remained the
favourite, mainly because transparent soaps tend to be more expensive
and also don't last as long.
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