Phosphorous Acid

Shijie Chemical

Specifications

HS Code	542522
Name	Phosphorous Acid
Chemical Formula	H3PO3
Molar Mass	82.00 g/mol
Appearance	Colorless, crystalline solid
Odor	Odorless
Density	1.651 g/cm³
Melting Point	73.6 °C
Boiling Point	200 °C (decomposes)
Solubility In Water	Highly soluble
Acidity	Diprotic acid
Oxidation State Of P	+3
Structure	Contains a P(OH)2 group and one P - H bond

Packing & Storage

Packing	5 - kg bottles of Phosphorous Acid, well - sealed for safe storage and transport.
Storage	Phosphorous acid should be stored in a cool, dry, well - ventilated area, away from heat sources and open flames. Keep it in tightly - sealed containers to prevent moisture absorption and reaction with air. Store it separately from oxidizing agents, strong bases, and metals as it can react. Follow local safety regulations for its storage to ensure safety.
Shipping	Phosphorous acid is typically shipped in tightly - sealed, corrosion - resistant containers. It must comply with regulations for hazardous chemicals, with proper labeling indicating its nature to ensure safe transportation.

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General Information

Historical Development

The acid of phosphorus, the history of its things, is very interesting. The ancestors of the ancient times did not know this thing, but the science gradually flourished, and they became known to the world.
At the beginning, there were many mistakes in exploring its nature and studying its quality. However, the wise men did not stop, and they studied it for several generations to get the true appearance. The method of its preparation has also changed. It started with crude techniques, and later became exquisite, and the yield gradually increased, and it was widely used.
In both work and agriculture, it shows its ability. In industry, it is the foundation of all kinds of products; above agriculture, it helps crops grow. Looking at the path of its development, from obscure to obvious, it is a clear proof of scientific evolution, and it is also a source of inquiry for future generations.

Product Overview

Phosphorus acid, in the form of colorless crystals, is soluble in water. This acid has the properties of a dibasic acid and can be ionized in two steps.
The method of its preparation is often obtained by co-heating phosphorus with hot water or hydrolysis of phosphorus trichloride.
Phosphorus acid has a wide range of uses. In agriculture, it can be used as a fertilizer to help crops grow. In chemical industry, it can be used as a raw material to make a variety of compounds. And because of its reducing properties, it can be used as a reducing agent in specific reactions.
Although this acid has many uses, it should be used with attention to safety. Because it is corrosive to a certain extent, it can cause harm when exposed to the human body. Storage also requires caution, and should be placed in a cool and dry place to avoid co-storage with strong oxidants.

Physical & Chemical Properties

Phosphorous Acid is a chemical substance. Phosphorous Acid is a compound whose physical and chemical properties can be investigated.
Looking at its physical properties, under normal circumstances, it is mostly colorless crystals, like ice jade, pure and transparent. The taste is slightly acidic, with a certain degree of hydrolysis, which is easy to absorb water in the air and gradually converts into a moist state. Its melting point is quite low, and it is easy to melt into a liquid when heated, just like the flow of water.
On its chemical nature, it is acidic and can combine with alkali substances to form corresponding salts. In chemical reactions, it is often used as a reducing agent to reduce the valence of other substances. In case of strong oxidizing agent, it is also oxidized and shows a different state. It is also very useful in the field of organic synthesis, which can help the reaction and promote the generation of new substances. This is the summary of the physical and chemical properties of Phosphorous Acid.

Technical Specifications & Labeling

Phosphoric acid, technology, specifications, and identification (commodity parameters)
Phosphoric acid, its quality, unique. Technology, strict specifications, purity, is important, needs to reach a high standard, environment. Its content, amount, are all fixed, so as to ensure that the quality is stable.
Where it is marked, there are also rules and regulations. On the packaging, the name is clear, and the words "Phosphorous Acid" are correct. The product parameters are detailed, listed, and the user is clear. And, note that the risk level is based on the police user, be careful and operate.
Preparation of phosphoric acid, according to the precise method, meets the specifications. The testing procedures are rigorous and cannot be neglected to ensure that every product meets the technical specifications and marks.

Preparation Method

In order to make Phosphorous Acid, the raw materials, production process, reaction steps and catalytic mechanism are very important. First, an appropriate amount of phosphorus rock is taken, and after fine grinding, it is mixed with sulfuric acid in a specific ratio in the reactor. The reaction steps are as follows: the phosphorus rock is co-heated with sulfuric acid, and the double decomposition reaction occurs. Sulfate replaces the phosphate root in the phosphorus rock to obtain a phosphoric acid solution.
In this process, the temperature and stirring rate have a significant impact. Maintaining a moderate high temperature and stirring at a uniform speed can promote a sufficient reaction. Then activated carbon is used to absorb impurities and purify them by distillation to obtain pure phosphoric acid. After a specific catalyst is used, phosphoric acid is hydrogenated and reduced under suitable conditions to obtain a crude product of Phosphorous Acid. After refining means such as recrystallization, impurities are removed to obtain a high-purity Ph Thus, following this process, high-quality Phosphorous Acid can be prepared.

Chemical Reactions & Modifications

The acidification of phosphorus is related to many changes. Phosphorous Acid has a unique reaction. It can react with various substances under specific conditions.
Looking at the reaction between it and the base, the corresponding salt can be generated. In this reaction, the hydrogen of the acid and the hydroxide of the base combine to form water, and the acid radical and the cation of the base form a salt.
As for the change, temperature, pressure, etc. have an effect. Heating up, or promoting its reaction rate, has a different effect on the equilibrium or.
The state of its structure also affects the reaction. The bond energy, bond angle, etc. in the molecule make the acid show a specific activity.
To improve its properties, a catalyst can be used. Appropriate agents can reduce the activation energy of the reaction, increase the reaction rate, improve the production efficiency, or change the selectivity of the product.
In chemical research, detailed study of the reaction and change of Phosphorous Acid can lay a solid foundation for new production and process progress.

Synonyms & Product Names

Phosphorus acid is also a chemical substance. Its synonymous name is called phosphoric acid. Phosphorus acid is also a common product in the market.
Guanfu phosphorus acid has its unique properties. In the process of chemical use, it is often used as a medium for the transformation of other substances. In the field of industry, it is also used, either as a catalytic agent or as a synthetic material.
The products of this acid sold in the city may have different names and colors. In order to recognize its characteristics, merchants name each machine. However, they are all made of phosphorus acid. Or to elevate the pure quality, or to say that the special way, although the name is different but the same, all revolve around the nature and use of this phosphorous acid.
is known, although the name is special, in fact, they are all products of Phosphorous Acid. In the progress of the chemical industry, each can develop its ability, for work and research, all have their functions that cannot be ignored.

Safety & Operational Standards

"Specifications for the Safety and Operation of Phosphoric Acid Products"
Phosphoric acid is also a chemical substance. It is used in many fields of industry and scientific research. However, this material has certain characteristics, which are related to safety and operation, and should not be careless.
As far as safety is concerned, phosphoric acid is corrosive. Touch the skin and can cause burns. If you accidentally touch the body, rinse with plenty of water as soon as possible, and seek medical attention in time. If its gas is inhaled into the lungs, it will also damage the respiratory system. In the place of operation, it must be well ventilated, and protective equipment such as gas masks, protective gloves and protective clothing must be prepared to prevent accidents.
When it comes to operating specifications, it should be stored in a cool, dry and ventilated place. Keep away from fire and heat sources to prevent them from being decomposed by heat or causing accidents. When handling, it should be handled with care to avoid leakage caused by damage to the container. If there is a leak, immediately isolate the scene and evacuate everyone. Small leaks can be cleaned by adsorption of sand, dry lime, etc.; large leaks need to be embanketed and properly handled.
During operation, strictly follow the procedures. When configuring the solution, slowly inject the phosphoric acid into the water, and must not reverse the order to prevent violent reactions. Operators must be professionally trained, familiar with its nature and danger, and master emergency methods. In this way, the use of phosphoric acid can be ensured safely, so that it can better serve production and scientific research.

Application Area

Phosphorus acid has a wide range of uses. In the field of agricultural mulberry, it can be used to make fertilizer, nourish crops, help them grow, make grains fertile, and fruits and vegetables delicious. In the field of medicine, it can be used as a pharmaceutical raw material to assist in the treatment of diseases, remove diseases and strengthen the body. It is also used in the chemical industry to participate in various syntheses, such as the production of special agents and exquisite materials. It can support the reaction of combustion substances and regulate the rate. It is wonderfully useful in the manufacture of fireworks and the use of fuel tools. It can also be used as a metal protective agent to prevent rust and ensure the long-term durability of equipment. It can be seen that phosphorus acid is of great use in various fields, benefiting people's livelihood and promoting the progress of various industries.

Research & Development

The industry of chemical industry is related to people's livelihood and is changing with each passing day. Phosphorous (Phosphorous) belongs to the genus of phosphorous (Phosphorous Acid), and its research and development are of great importance.
At the beginning, the method of making phosphoric acid was crude and crude, and the quantity of production was small, but the quality was not refined. Zhu Xian Da worked hard to explore new paths and seek good methods. Or research the choice of raw materials, or study the article of reaction, hoping to get good results.
After years of research, the method has gradually improved. The new method can improve the quantity of production, but also the purity of quality. The field of application is also gradually widening. In agriculture, it is the effect of fertilizing and promoting the abundance of harvests; in work, it is the material of various products and the goodness of utensils.
However, the research is endless and the development is endless. In today's world, seek green methods and explore the use of diversity. Hope that with the power of science and technology, the production of phosphoric acid will be beneficial and widespread, for the benefit of the world and the prosperity of all karma.

Toxicity Research

Phosphorous Acid Toxicity Study
The nature of all things is different. Chemical substances are also related to the study of toxicity. Today, Phosphorous Acid products are used as a test to study their toxicity.
Phosphorous Acid has a certain degree of acidity. If it touches the skin, it can cause burning pain, redness and swelling, such as being burned. If it is not carefully entered into the eyes, it will damage the clarity of the eyes, and there will be no great disaster. If it is taken by mistake, the stomach will be harmed by it, and colic, vomiting and other diseases will follow.
Investigate the source of its toxicity, its acidity can break the balance of acid and alkali in the human body, and disturb the normal work of cells. However, it should also be noted that under appropriate doses and conditions, it may have different uses. But the risk of toxicity cannot be ignored. Therefore, when studying its products, we should be cautious, strictly abide by the procedures, and use its benefits to prevent its harm.

Future Prospects

Phosphorus is also an important substance for transformation. Today, the acidification of phosphorus, its shape and properties, are all the attention of researchers. In the future, the acidification of phosphorus may have great progress.
First, in the field of engineering, the more subtle the method, the purer the production, the greater the amount, to meet the needs of all industries. Second, in the field of agriculture and planting, or can be used for new purposes, to help the seedlings strong, harvest abundant, benefit the field, and maintain the strength of the soil and increase the product. Third, in the road of medical research, or to explore new paths, for the treatment of diseases, health, and provide good remedies.
Although the road ahead is long, with today's wisdom and strength, phosphorus acidification will be a new scene, expanding endless possibilities, for the progress of the world, the prosperity of people, and building an unparalleled achievement.

Frequently Asked Questions

What are the Chemical Properties of Phosphorous Acids?

Phosphorous acid, that is, phosphorous acid (Phosphorous Acid), is peculiar in its properties, and it has considerable advantages in various chemical properties.
Phosphorous acid is acidic. In water, it can dissociate hydrogen ions, showing the sign of acidity. Although this acidity is not as strong as strong acid, it is enough to neutralize with bases. In case of sodium hydroxide, it will be transformed into sodium phosphite and water, which is a common case of acid and base neutralization.
Furthermore, phosphorous acid is reducing. Among phosphorus, the valence state is not the highest, so it tends to increase the valence state and can reduce other substances. In case of strong oxidants, such as potassium permanganate, the valence state of phosphorus increases, and phosphorus itself is oxidized, causing the color of potassium permanganate to fade away, which shows its ability to reduce.
Phosphoric acid also changes abnormally when heated. Or decomposes to produce phosphine and other substances. During this process, its structure disintegrates and elements are rearranged, showing a wonderful chemical change. And it is also often helpful in organic synthesis and other fields. It can participate in many reactions, or be a phosphorus source, introducing phosphorus into compounds to help build new compounds. It and alcohols, under appropriate conditions, can form phosphite esters. This ester also has its unique use in organic chemistry, either as a flame retardant or as a key intermediate in the study of reaction mechanism. In short, the chemical properties of phosphite are rich and diverse, and it has its position that cannot be ignored in various fields of chemistry.

What are the Applications of Phosphorous Acid in Industry?

Phosphorous acid (Acid) is a compound formed by phosphorus, which is used for industrial purposes. Take phosphoric acid (Phosphoric Acid) as an example. In food engineering, it is often used as a food additive. It can reduce the acidity of food, make food materials, cans and other foods taste better, and can prevent the growth of microorganisms, prolonging the shelf life of food.
In fertilizer engineering, phosphorus fertilizer is an indispensable thing for plant growth. Phosphoric acid generated by phosphoric acid, soil gold, etc., can be used to form various phosphorus fertilizers, such as phosphoric acid, heavy phosphoric acid, etc. Plants provide phosphorus elements, promote plant root cultivation, early flower and fruit production, and improve crop production.
In addition, in the field of chemical engineering, phosphoric acid can be used to create phosphoric acid, such as tripolyphosphoric acid, which is often used in washing, which can melt hard water and improve the washing effect. Moreover, phosphoric acid is also used as raw materials for some resistant and resistant materials, and plays an important role in the production of materials, enamels, etc.
Hypophosphorous Acid also has special uses in engineering. Its original nature can be used in the field of chemical engineering, which can make the surface of the gold surface settle in a dense and uniform manner, and improve the resistance, wear resistance and durability of the gold. For example, it is especially common in the surface treatment of metal components, mechanical parts, etc.
Phosphorous Acid is often used in the synthesis of chemical materials, as the original or medium. It can be used to synthesize specific chemical compounds, and plays an important role in the manufacture of refined chemical products such as chemical compounds.

What are the Preparation Methods of Phosphorous Acid?

The method of making phosphorous acid has existed in ancient times. In the past, craftsmen prepared phosphoric acid by following the following methods.
First, start with phosphate rock. The phosphate rock is crushed and placed in a pottery kettle with sulfuric acid. The main component of phosphate rock is calcium phosphate, which is in contact with sulfuric acid and reacts chemically. The strong acidity of sulfuric acid decomposes calcium phosphate and releases phosphoric acid. The reaction formula is roughly: $Ca_3 (PO_4) _2 + 3H_2SO_4 = 2H_3PO_4 + 3CaSO_4 $. Calcium sulfate forms a precipitated state, while phosphoric acid remains in the solution. After that, through various processes such as filtration and distillation, impurities and excess water are removed to obtain pure phosphoric acid. This is a commonly used method in ancient times, because the raw materials are easy to find, and the operation is not extremely difficult.
Second, there are also things that start with white phosphorus. First, white phosphorus is ignited to combine with oxygen in the air to generate phosphorus pentoxide. When it burns, the fire is dazzling and the smoke is billowing. Phosphorus pentoxide touches water and quickly synthesizes to form phosphoric acid. The reaction formula is: $P_4 + 5O_2 = 2P_2O_5 $, $P_2O_5 + 3H_2O = 2H_3PO_4 $. However, white phosphorus is highly toxic and has a very low ignition point. When operating, it must be very careful. If it is careless, it will cause disaster. Therefore, those who use this method are mostly skilled and well-protected.
There are also those who use ferrophosphorus as raw materials. Ferrophosphorus is put into a furnace, calcined in a blast, and phosphorus is oxidized to form phosphorus oxides. After rinsing with water, phosphoric acid can also be obtained. Although the raw materials are easy to obtain, the operation is complicated, and the product has many impurities, and it needs to be purified carefully to obtain usable phosphoric acid.

What are the Effects of Phosphorous Acids on Human Health?

Phosphorous (Phosphorous) and phosphorus (Phosphorous Acid) formed from acids do have an impact on human health. It is said in ancient Chinese today.
Phosphorus has an important role in the human body. It is strong in bones and teeth, and it is of great service. Phosphorus is the structural material of bone, and in combination with calcium, it forms a strong substance, which makes the body stand and the limbs move. If phosphorus is not balanced, the bones are brittle and the teeth are easily damaged.
The effect of phosphorus (Phosphorous Acid) on the human body is quite complicated. Appropriate phosphorus (Phosphorous Acid) may help smooth metabolism. All kinds of biochemical reactions in the human body depend on enzymes to promote them. Phosphorous Acid or enzyme activity is adjusted, so that the metabolism of sugar, fat and protein is orderly. The decomposition and synthesis of sugar are related to Phosphorous Acid. If it is appropriate, it can protect the energy of cells and the vitality of the body.
Of course, over-administration of Phosphorous Acid also has disadvantages. It may disturb the balance of acid and alkali in the body and cause disorders in the internal environment. Excessive acid accumulation, the blood tends to acid, and the viscera are all affected by it. The kidney is the official of toxin filtration and elimination. If the acid is high, the load on the kidney will increase, and kidney disease will be prone to occur for a long time. And phosphorus (Phosphorous Acid) may compete with the absorption of calcium, and if there is too much phosphorus, the uptake of calcium will be blocked. In the long run, calcium in the bone will be lost, and osteoporosis will erupt.
In addition, phosphorus (Phosphorous Acid) is also involved in the conduction of nerves. When appropriate, it can help the smooth transmission of nerve signals, the senses are keen, and the limbs are flexible. If it is excessive, the nerves may be disturbed, and people are easily upset, uneasy, and even convulsive.
Therefore, phosphorus (Phosphorous Acid) is beneficial to human health. People should take balance as the key, take it reasonably, and make phosphorus perform their duties in the body to ensure health.

What should be paid attention to in the storage and transportation of Phosphorous Acids?

Phosphorous and acid (Acid) related substances need careful attention when storing and transporting.
Phosphorus should be stored in a dry, cool and well-ventilated place. Because of its certain chemical activity, in case of humid air, it is easy to cause chemical reactions and cause quality damage. And it is necessary to keep away from fire and heat sources to prevent the risk of combustion or explosion. When storing, it should be separated from oxidants and acids, and cannot be mixed. Because phosphorus comes into contact with oxidants and acids, it may trigger a violent reaction.
For acid substances, it is also necessary to choose a dry and ventilated warehouse when storing. Different kinds of acids have different properties. For example, sulfuric acid is highly corrosive, and hydrochloric acid is volatile. When storing sulfuric acid, ensure that the container is well sealed to prevent it from absorbing water and becoming thinner, and should be stored separately from flammable and organic substances to avoid dangerous reactions. Hydrochloric acid should pay attention to its volatilization characteristics, and the warehouse temperature should not be too high to avoid aggravation of hydrochloric acid volatilization.
When transporting phosphorus, it is necessary to strictly follow relevant regulations and use professional packaging. Packaging materials must be able to effectively prevent phosphorus leakage, and do a good job of fire prevention and moisture prevention measures. Transportation vehicles should also be equipped with corresponding fire protection equipment and leakage emergency treatment equipment. During transportation, they should drive at a steady speed to avoid packaging damage caused by bumps and shocks.
When transporting acids, in view of their corrosive nature, special corrosion-resistant containers need to be used for loading. Before loading, carefully check whether the container is intact and sealed reliably. During transportation, pay close attention to temperature and pressure changes to prevent acid expansion and leakage due to excessive temperature. At the same time, transportation personnel must be familiar with the characteristics of acid substances and emergency treatment methods. In the event of leakage, they can respond quickly and properly to avoid serious harm.