When Was The Soap First Made?
Soap was not one of the necessary and useful inventions of man. It is quite a recent thing in man’s history and is about 2000 years old. The ancient people anoint their bodies with olive oil. They also used juices and ashes of certain plants to clean themselves. But, by the time of pliny, a Roman writer of first century AD, we already have a reference to two kinds of soap, soft and hard. He describes it as an invention for brightening up the hair and gives the Gauls credit for inventing it.
In the ruins of Pompeii, by the way, there was found buried as establishment for turning out soap that very much resembles the soap of today! And yet, one hundred years ago nearly all soap used in the United States was made at home.
Fats and oils are boiled with an alkali. In the great soap factories, the fats and alkalis are first boiled in huge kettles. This process is called ‘saponification’. When it is almost completed, salt is added. This causes the soap to rise to the top of the kettle. The brine or salt solution containing glycerine, dirt and some excess alkali sinks to the bottom and is drawn off. This step is repeated as many as five to six times. More wets and alkali are added each time until the last bit of fat is saponified, or converted from a fat into soap.
The next step is to churn the soap into a smooth mass while adding certain ingredients, such as perfumes, colouring, water softeners, and preservatives. The hot melted soap is ready to be fashioned into bar, cakes, flakes, granules, globules, etc. Toilet soaps go through a process called “milling which shreds and dries them, then rolls then into sheets.
Related posts:
Did male and female dinosaurs have different colours? Complete General Knowledge Question and Answer...
General Knowledge
What is a hormone? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
What causes lightning? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
What is an autopsy? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and ...
General Knowledge
Do you know “Holi celebrated worldwide!”.
Do you know
Could dinosaurs smell? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
Do you know “Tagore translations in Lithuanian”.
Do you know
GK Question "How Did The System Of Counting Originate?" general knowledge book English 2021 current ...
General Knowledge
GK Question "What Do You Know About Evolution?" general knowledge book English 2021 current affairs ...
General Knowledge
Were dinosaurs' eggs also big? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, ...
General Knowledge
When was the first official airmail flight service commenced? Name the nations.
1st in the World
Did the Minoans play sports? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
GK Question "What Radium Is?" general knowledge book English 2021 current affairs quiz and answers f...
General Knowledge
What is the universe made up of? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
GK Question "Do You Know, That A Cow Chews Its Cud?" general knowledge book English 2021 current aff...
General Knowledge
Why do pipes crack when the water in them turns to ice? Complete General Knowledge Question and Answ...
General Knowledge
GK Question "What Smoke Is?" general knowledge book English 2021 current affairs quiz and answers fo...
General Knowledge
How do people explore the ocean depths?Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
How does the seismograph measure an earthquake? Complete General Knowledge Question and Answer for C...
General Knowledge
What are viruses? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12...
General Knowledge