Phosphoric Acid PA
| HS Code | 728712 |
| Name | Phosphoric Acid (PA) |
| Chemical Formula | H3PO4 |
| Appearance | Colorless, odorless, syrupy liquid |
| Molar Mass | 97.994 g/mol |
| Density | 1.88 g/cm³ |
| Boiling Point | 158 °C (316 °F, 431 K) (decomposes) |
| Melting Point | 42.35 °C (108.23 °F, 315.50 K) |
| Acidity Pka1 | 2.148 |
| Solubility In Water | Miscible |
| Viscosity | High (syrupy nature due to hydrogen bonding) |
| Ph Typical Dilute Solution | Acidic, around 1 - 2 depending on concentration |
As an accredited Phosphoric Acid PA factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Phosphoric Acid PA is strong in nature. It must be packaged in acid-resistant pottery jars or iron barrels with tight sealing. The capacity of each container depends on its concentration to prevent leakage. |
| Storage | Phosphoric Acid PA should be stored in a cool and dry place, away from fire sources and flammable materials, strictly separated from alkalis, and supervised by a dedicated person. |
| Shipping | For the transportation of Phosphoric Acid PA, special containers are required, which should be kept away from the sun and rain, and the loading and unloading should be cautious, collision and leakage should be prevented, and the transportation should be carried out in accordance with regulations. |
Competitive Phosphoric Acid PA prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
Phosphoric Acid PA has a long history of development. As early as in ancient times, people had some knowledge of phosphorus. With the continuous advancement of chemical science, they gradually mastered the preparation method of Phosphoric Acid PA. From the initial crude preparation method to modern industrial large-scale production, after the efforts and innovations of countless scientists, its production technology has been continuously improved, and its application areas have gradually expanded from early chemical experiments to food, medicine, agriculture and other industries.
Product Overview
Phosphoric Acid (PA) is a colorless, transparent, sticky liquid possessing strong acidity. In the food industry, it is chiefly utilized as an acidity regulator and nutritional supplement. By virtue of its acidic attributes, it can efficiently adjust the pH of food, enhance the taste and flavor of edibles, and also provide phosphorus to the human body, which plays a vital role in elevating food quality and supplementing human nutrition.
Physical & Chemical Properties
Physically, Phosphoric Acid PA is a colorless, transparent, viscous liquid, odorless, hygroscopic, and miscible with water in any proportion. In terms of chemical properties, it has strong acidity, can react with alkali to neutralize, can react with a variety of metals to generate corresponding salts, often acts as a catalyst or reactant in chemical reactions, can adjust the pH value in food systems, and affects the chemical balance and physical state of food.
Technical Specifications & Labeling
Technical Specifications has strict requirements on the content, impurity content, density, color and other indicators of Phosphoric Acid PA. When labeling, the packaging must clearly mark the product name (Phosphoric Acid PA), specifications, manufacturer, production date, shelf life, implementation standards, usage methods, hazard warning signs and emergency treatment measures to ensure that users understand the product characteristics and safety precautions.
Preparation Method
There are two common methods for preparing Phosphoric Acid PA: thermal method and wet method. Phosphoric Acid PA is prepared by thermal method, using yellow phosphorus as raw material, through a series of reactions such as combustion and hydration; while the wet method uses phosphate rock as raw material, through reaction with sulfuric acid, extraction, purification and other processes. Both methods have their own advantages and disadvantages. In actual production, it is necessary to comprehensively select according to factors such as raw material source and production cost.
Chemical Reactions & Modifications
In the food system, Phosphoric Acid (PA) can carry out neutralization reaction, regulate the pH value of food, and enhance the taste and flavor of food. In beverage manufacturing, it reacts with alkaline materials to generate carbon dioxide gas, endowing the beverage with a refreshing taste. Through physical and chemical treatments like dilution and blending, its concentration and properties can be adjusted to satisfy diverse food processing demands.
Synonyms & Product Names
Phosphoric Acid PA is also known as orthophosphoric acid. In the chemical, food and other industries, these two names are widely used, which is convenient for describing and communicating the product in different scenarios.
Safety & Operational Standards
In terms of safety, Phosphoric Acid PA is corrosive. When using it, you must strictly follow the safety operating procedures, wear protective equipment, and avoid contact with the skin and eyes. Operational Standards require that in all links such as production, storage, transportation, and use, all must be strictly implemented in accordance with the management regulations for hazardous chemicals to ensure personnel safety and environmental pollution.
Application Area
Phosphoric Acid PA is widely used in the food field. In beverage production, it is used as an acidity regulator to adjust the acidity and taste of beverages, and at the same time prevent the growth of microorganisms in beverages; in meat products and canned food processing, it can be used as a quality improver to improve the texture and flavor of food; in addition, it can also be used for food preservation and nutritional fortification.
Research & Development
Currently, the Research & Development of Phosphoric Acid PA is committed to optimizing production processes, reducing energy consumption and environmental pollution, and improving product purity; exploring its new applications in new foods and functional foods; studying its synergistic mechanism with other food additives to develop better quality and safer food products.
Toxicity Research
Toxicity Research shows that when Phosphoric Acid PA is used reasonably in food processing, it has no obvious harm to human health within the prescribed dosage range. However, excessive intake may affect the body's absorption of calcium, so the dosage must be strictly controlled to ensure food safety.
Future Prospects
n times ahead, Phosphoric Acid (PA) is set to retain its significant role in the food industry. Along with the ongoing advancement of food technology, its production processes will become more eco-friendly, and product performance will undergo further optimization. Meanwhile, as the demand for food quality and nutrition grows, Phosphoric Acid (PA) will be applied more extensively in new food development, traditional food upgrading, and other areas, injecting fresh vitality into the food industry's progress.
Where to Buy Phosphoric Acid PA in China?
As a trusted Phosphoric Acid PA manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Phosphoric Acid PA supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
How to accurately control the amount of Phosphoric Acid PA added in food processing?
Although Phosphoric Acid PA can adjust acidity and improve flavor in food processing, if the amount is not added properly, it will damage the quality of food. In beverage production, if it is used as an acidity regulator, if too much is added, the sour taste will be too strong and the taste will be sour and difficult to swallow; if too little is added, the expected flavor and antiseptic effect cannot be achieved. Generally speaking, the amount added is often 100 grams per 100 liters of beverage, but the specific amount needs to be finely adjusted according to the type of beverage, sugar content and target taste. In meat processing, when used for quality improvement, too much addition can easily make the meat soft and rotten, and too little addition can hardly play the role of water retention and tenderization. It is usually measured in a few thousandths of the weight of the raw material. Controlling the amount of addition is like cooking seasoning. It requires a deep understanding of the physical properties, repeated adjustments according to food characteristics, process requirements and expected effects, and accumulation of experience to achieve accuracy and make the food flavor excellent and of high quality.
What are the key points to pay attention to when storing Phosphoric Acid PA?
When storing Phosphoric Acid PA, both the environment and container selection are key. Because it is corrosive, it is advisable to choose a dry, ventilated and cool dedicated warehouse, away from fire, heat sources and flammable and explosive items. It must not be stored with alkaline substances and metal elements to prevent violent reactions. The warehouse floor needs to be treated with anti-corrosion to prevent acid leakage and corrosion of the floor. Special plastic barrels or ceramic jars are often used as storage containers. They must have good sealing and corrosion resistance. Before use, carefully check whether the container is damaged or leaking. During storage, regularly check the condition of the container and the quality of the acid to observe whether there are any abnormalities such as discoloration and turbidity. In case of high temperature weather, it is even more important to strengthen ventilation and cooling of the warehouse to avoid increased volatilization of the acid. Only by properly storing it in this way can we ensure that Phosphoric Acid PA is stable in nature and safe to use.
What are the advantages and disadvantages of common methods for preparing Phosphoric Acid PA?
There are two common methods for preparing Phosphoric Acid PA: thermal method and wet method. The thermal method uses yellow phosphorus as raw material, which is obtained by combustion and hydration. Its advantages are high product purity and few impurities, and it is suitable for fine chemicals, food and other industries with strict purity requirements. However, this method consumes a lot of energy, yellow phosphorus is a hazardous chemical, the production process has high safety risks, and the cost is expensive. The wet method uses phosphate rock as raw material, reacts with sulfuric acid, and is extracted and purified. Its advantages are that the raw materials are easy to obtain, the cost is low, and it is suitable for large-scale industrial production. However, the product obtained by this method has relatively low purity and more impurities, and subsequent complex purification treatment is required. In addition, a large amount of waste slag and wastewater will be generated during the production process, which has a great impact on the environment. Both methods have their own advantages and disadvantages. In actual production, it is necessary to comprehensively consider factors such as raw material supply, product quality requirements, cost budget and environmental protection standards, and carefully choose to achieve the best production efficiency.
What are the taboos for mixing Phosphoric Acid PA with other chemicals?
Mixing Phosphoric Acid PA with other chemicals can cause trouble if you are not careful. Because it is a strong acid, it is strictly forbidden to mix with alkaline chemicals. When the two meet, it is like cooking oil with a raging fire, and violent neutralization will release a lot of heat, which may cause splashing, explosion and other dangers, and will reduce the effectiveness of each other. It is also not advisable to mix with metal elements. It is easy to cause displacement reaction and produce hydrogen. There is a risk of explosion when encountering open flames or heat sources. In addition, strong oxidants mixed with Phosphoric Acid PA may cause redox reactions, resulting in changes in the properties of chemicals and even the generation of toxic and harmful products. Before mixing, be sure to understand the properties and reaction characteristics of each chemical in detail, or conduct small-scale tests, just like a counselor making a plan, to ensure that there are no adverse reactions before mixing. Do not operate blindly, so as not to cause a disaster, endangering personnel safety and production stability.
How to do safety protection when using Phosphoric Acid PA?
When using Phosphoric Acid PA, safety protection is the top priority. Operators must wear corrosion-resistant protective clothing, acid-resistant gloves, protective masks and goggles, and wear full body protection to prevent acid from contacting the skin and splashing into the eyes. During operation, keep the workplace well ventilated, such as a wide building to let in wind, and disperse the volatile acid mist in time. If you accidentally come into contact with acid, immediately rinse the injured area with plenty of water for at least 15 minutes, such as flooding, and then seek medical attention as soon as possible. During storage and transportation, follow the relevant regulations on hazardous chemicals, use special containers and transportation tools to prevent leakage. The workplace is equipped with emergency supplies such as emergency eyewashers, showers and neutralizers to prepare for emergencies. Use strictly in accordance with the operating procedures, and do not simplify the steps without authorization, so as to ensure personal safety and avoid accidents.
