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显示标签为“Soap”的博文。显示所有博文

Introduction to Soap

Soap is a general term for fatty acid metal salts. The formula is RCOOM, wherein RCOO is a fatty acid radical and M is a metal ion. The carbon number of fatty acids in daily soap is generally 10-18. The metal is mainly alkali metals such as sodium or potassium. It is also useful for special purpose soaps such as ammonia and certain organic bases such as ethanolamine and triethanolamine. In a broad sense, fatty acid salts obtained by saponification or neutralization of fats, oils, waxes, rosins or fatty acids and alkalis may be referred to as soaps. Soap is soluble in water and has a decontamination effect. Various types of soaps are soaps, also known as soaps, metal soaps and complex soaps.

Soap is a general term for fatty acid metal salts. The number of fatty acids in daily soap is generally 10-18. The metal is mainly alkali metals such as sodium or potassium. It is also used for special purposes with ammonia and certain organic bases such as ethanolamine and triethanolamine. Soapy. Soaps include laundry soaps, soaps, metal soaps, liquid soaps, and related products such as fatty acids, hardened oils, and glycerin.

Name

Because the ancients used the acacia to wash clothes in the Yellow River Basin, there was no acacia tree in the Yangtze River valley, so they found another tree whose fruit has the same performance as the acacia, and can wash clothes, but it is more fatty than the acacia. So, call her soaps, also called soapy fruit.

When the artificial detergent was invented, the word "soap" was still used.

Therefore, although there is no thin soap, but there is no fat soap, which is "acacia".

Because soap was introduced from the West, it was called "foreign alkaline" at that time. Although "alkali" and soap itself could not be equivalent, the Chinese people driven by the novelty still used this name in the official for decades. Until the national industry and commerce made soap itself, it gradually abandoned the word "foreign".

Principle

The soap molecular structure can be divided into two parts. One end is a COO- (hydrophilic part) with a charge polarity, and the other end is a non-polar carbon chain (lipophilic part). Soap can destroy the surface tension of water. When soap molecules enter the water, they have polar hydrophilic parts, which will destroy the attraction between water molecules and reduce the surface tension of water, so that water molecules are evenly distributed in the water to be cleaned. Clothing or skin surface. The lipophilic part of the soap penetrates into the oil, and the hydrophilic part dissolves in the water. The mixture forms a small oil droplet after being stirred, and the surface is covered with the hydrophilic part of the soap, and does not re-aggregate into a large oil stain. . This process (also known as emulsification) is repeated several times, and all the oil will become very tiny oil droplets dissolved in water and can be easily rinsed off.

Ingredient


Ingredients of soap: sodium carboxylic acid salt R-CO2Na, synthetic pigments, synthetic fragrances, preservatives, antioxidants, foaming agents, hardeners, viscosifiers, synthetic surfactants.

The main component of soap, R-CO2Na, (sodium stearate (C17H35COONa)), in which the R groups are generally different, are various hydrocarbyl groups. R- is a hydrophobic group and a carboxyl group is a hydrophilic group. In hard water soap and Ca2+, Mg2+, etc. form a curd-like substance, fatty acid calcium salt, etc., commonly known as "calcium soap" is used as a useless detergent. Adding the softener to the hard water removes the hard water ions and allows the soap to function. The medicated soap is mainly filled with some disinfectant. Crystal soap is particularly strong due to its soapy base. If you add spices and dyes to it, make a soap with both color and aroma; if you add some medicine (such as boric acid or carbolic acid) to it, it becomes a medicated soap.

 

 

The History of Soap

In ancient times, no matter the east or the west, the earliest washing ingredients were nothing but sodium carbonate and potassium carbonate. The former is a natural lake mineral product, and the latter is the main washing component of grass ash.

The invention of soap was rumored to be a Phoenician on the eastern coast of the Mediterranean. Legend has it that a Phoenician chef in the ancient Egyptian palace in the 7th century BC may have been the inventor of soap. The chef did not intend to overturn a can of cooking oil. To avoid being discovered by others, he covered it with the ash from the stove and took the oily ash to the outside and threw it away. In order to wash his dirty hands, he put his hands in the water. It was found that only a few squats were used, and the greasy hands were washed away, and even the old dirt was washed away. The chef then asked other chefs to wash their hands with this substance and found that they washed their hands more cleanly. Later, the Pharaoh knew the secret and asked the chef to make some oily ash for him to wash his hands.

However, according to archaeological findings so far, soap-like items date back to Babylon in the 29th century BC. In the 23rd century BC, a soap formula consisting of water, alkali and cinnamon oil was recorded on the mud board of Babylon. Edwin Smith's papers show that the ancient Egyptians used a combination of animal, vegetable oil and alkaline salts to create soaps for regular bathing in the 15th century BC. Although soap was invented very early, block soap was a luxury that was not widely used by the general public until the 19th century.
Ancient China

Before the invention of soap, people in northern China used pig's pancreas, oil and alkali to lick them and put them to dry for a few days, called "pancreas." There are also people who use water to soak the wood ash. After filtering, use this substance to wash clothes. Plant extracts containing saponins such as saponins and the like are also used in addition to those. In addition, people in ancient times scrubbed the skin with water and wood chips, and then applied oil to moisturize the rubbed skin, which is the ingredient they used to bathe.

Japan

Japanese fertilization photography "soap" (soap), Yayaki "stone 碱".

The Middle East

The 12th century Islamic document describes the process of making soap. The key raw materials, alkali, are mentioned in the document. In the 13th century, soap production in the Islamic world almost entered the period of industrialization. The raw materials are supplied by Nablus, Fes, Damascus, Aleppo and the like.

Western countries

In the second century, a Westerner named Gaylina, who opened a soap factory in Italy and France, was not very developed at the time, so the soap cleaning items at the time were not very effective. Charlemagne came to Rome to learn about the benefits of soap and returned to Frank to promote; before that, the West was limited to the Sicilian region. In 1662, the British chemist Zhong En and Bammer improved the original Gailan soap. The effect of cleaning items is also better. The French chemist Schiffer also extended the deep improvement of Zhong En and Bammer's modified soap to become the first person to make soap with the principle of tallow alkalining, and is also an important step in the manufacture of modern soap.

 

More than 4,000 years ago, in a small island called Lesbos in ancient Greece, local people used animals to worship the sky. Because wood was used when burning animals, the wood ash and animal fats mixed to produce a similar Soapy things, heavy rain washed these things into the rivers used by local women to wash clothes, and they found that the clothes were washed more cleanly.

3000 years ago, Mesopotamians (two river cultures) found that after the burning of the ash and oil after the plants were burned, the dirt could be removed. From the soap factory excavated from the ruins of Pompeii, Italy, you can know that ancient Rome has started using soap. Brulan is the first person to invent the production of sodium carbonate soap from salt, and is also an important person in the history of soap.

It is worth mentioning that in the United States during the pioneering period, immigrants will choose a day to gather soap from the village when they are warm in the early spring.

The source of soap is derived from oak, beech and other wood extracts, used as a source of alkali juice, if not enough, it is added from the ash of the stove. With alkali juice, oil is obtained from animal fats or vegetable oils for cooking, but once the oil and water are separated, it has to be repeated. In the 19th century, companies invested in soap production.

In ancient times, no matter the east or the west, the earliest washing ingredients were nothing but sodium carbonate and potassium carbonate. The former is a natural lake mineral product, and the latter is the main washing component of grass ash.

The invention of soap was rumored to be a Phoenician on the eastern coast of the Mediterranean. Legend has it that a Phoenician chef in the ancient Egyptian palace in the 7th century BC may have been the inventor of soap. The chef did not intend to overturn a can of cooking oil. To avoid being discovered by others, he covered it with the ash from the stove and took the oily ash to the outside and threw it away. In order to wash his dirty hands, he put his hands in the water. It was found that only a few squats were used, and the greasy hands were washed away, and even the old dirt was washed away. The chef then asked other chefs to wash their hands with this substance and found that they washed their hands more cleanly. Later, the Pharaoh knew the secret and asked the chef to make some oily ash for him to wash his hands.

However, according to archaeological findings so far, soap-like items date back to Babylon in the 29th century BC. In the 23rd century BC, a soap formula consisting of water, alkali and cinnamon oil was recorded on the mud board of Babylon. Edwin Smith's papers show that the ancient Egyptians used a combination of animal, vegetable oil and alkaline salts to create soaps for regular bathing in the 15th century BC. Although soap was invented very early, block soap was a luxury that was not widely used by the general public until the 19th century.
Ancient China

Before the invention of soap, people in northern China used pig's pancreas, oil and alkali to lick them and put them to dry for a few days, called "pancreas." There are also people who use water to soak the wood ash. After filtering, use this substance to wash clothes. Plant extracts containing saponins such as saponins and the like are also used in addition to those. In addition, people in ancient times scrubbed the skin with water and wood chips, and then applied oil to moisturize the rubbed skin, which is the ingredient they used to bathe.

Japan

Japanese fertilization photography "soap" (soap), Yayaki "stone 碱".

The Middle East

The 12th century Islamic document describes the process of making soap. The key raw materials, alkali, are mentioned in the document. In the 13th century, soap production in the Islamic world almost entered the period of industrialization. The raw materials are supplied by Nablus, Fes, Damascus, Aleppo and the like.

Western countries

In the second century, a Westerner named Gaylina, who opened a soap factory in Italy and France, was not very developed at the time, so the soap cleaning items at the time were not very effective. Charlemagne came to Rome to learn about the benefits of soap and returned to Frank to promote; before that, the West was limited to the Sicilian region. In 1662, the British chemist Zhong En and Bammer improved the original Gailan soap. The effect of cleaning items is also better. The French chemist Schiffer also extended the deep improvement of Zhong En and Bammer's modified soap to become the first person to make soap with the principle of tallow alkalining, and is also an important step in the manufacture of modern soap.

More than 4,000 years ago, in a small island called Lesbos in ancient Greece, local people used animals to worship the sky. Because wood was used when burning animals, the wood ash and animal fats mixed to produce a similar Soapy things, heavy rain washed these things into the rivers used by local women to wash clothes, and they found that the clothes were washed more cleanly.

3000 years ago, Mesopotamians (two river cultures) found that after the burning of the ash and oil after the plants were burned, the dirt could be removed. From the soap factory excavated from the ruins of Pompeii, Italy, you can know that ancient Rome has started using soap. Brulan is the first person to invent the production of sodium carbonate soap from salt, and is also an important person in the history of soap.

It is worth mentioning that in the United States during the pioneering period, immigrants will choose a day to gather soap from the village when they are warm in the early spring.

The source of soap is derived from oak, beech and other wood extracts, used as a source of alkali juice, if not enough, it is added from the ash of the stove. With alkali juice, oil is obtained from animal fats or vegetable oils for cooking, but once the oil and water are separated, it has to be repeated. In the 19th century, companies invested in soap production.