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Phosphoric Acid

CAS No.
NO.7664-38-2
Synonyms
Orthophoric Acid
Certificates

Phosphoric acid, also known as Orthophoric acid, is a common inorganic acid with the formula H3PO4 , and is most commonly used in aqueous solutions containing 85% Phosphoric acid. There are two preparation methods, Thermal method and Wet method, the main raw materials are Yellow phosphorus and Phosphate rock. Widely used in chemical, pharmaceutical, food additives and electroplating industries.

Properties Application Structural Identifiers Specification Package FAQ

Properties

Physical State	Colorless transparent or slightly pale, viscous liquid
Solubility	Can be mixed with water in an infinite proportion, but at the same time it has a dehydration-hydration equilibrium reaction with water.
Acidity	Faintly acid
Corrosiveness	Phosphoric acid solutions can be corrosive to certain metals and materials.
Toxicity	Phosphoric acid is a non-toxic inorganic substance. In laboratory and industry, a mixture of non-toxic phosphates and weak acids (such as citric acid) is often used as a buffer solution.
Bleaching	Bleaching agent in industries such as paper and textiles. Sodium metasilicate helps to whiten and brighten materials.
Compatibility	Compatible with a wide range of other chemicals and ingredients commonly used in industrial and household formulations.

Application

Food Additives

Phosphoric acid can be used as a sour agent in cans and beverages such as cola. It can be used as a yeast nutrient source and PH regulator to prevent the propagation of miscellaneous bacteria in brewing.

Medicine

Phosphoric acid can be used to make phosphorus-containing drugs, such as Sodium glycerophosphate.

Rubber and Plastic

Within rubber and plastic industry, phosphoric acid is used as an acidic catalyst for thermoplastic Phenol resin; Coagulant for slurry and raw materials for producing inorganic inder.

Chemical Industry

Phosphoric acid is used to produce Sodium acid phosphate, Dipotassium hydrogen phosphate, Disodium phosphate, Potassium pyrophosphate and Various phosphates.

Electroplating

Phosphoric acid mainly used for the phosphating of steel pipes on the metal surface to form an insoluble phosphate film to prevent the metal from being eroded. In addition, phosphoric acid can also be used in combination with nitric acid to improve the luster of the metal surface. Preparation of electrolytic polishing fluid and chemical polishing fluid, and polishing of aluminum products.

Printing and Dyeing

In the construction industry, sodium metasilicate is sometimes added to cementitious materials to improve their workability and durability. It can enhance the adhesion and cohesion of concrete mixtures, contributing to stronger and more resilient structures.

Structural Identifiers

Linear Formula	H₃PO₄
CAS No.	7664-38-2
EINECS No.	231-633-2
Pubchem	1004
IUPAC Name	phosphoric acid
SMILES	OP(=O)(O)O
InChI Identifier	1/H3O4P/c1-5（2,3）4/h（H3,1,2,3,4）
InChI Key	NBIIXXVUZAFLBC-UHFFFAOYAI
ChEBI	CHEBI:26078
UN NO.	UN 3453
Phosphoric Acid Synonyms:	Orthophoric Acid
Grades	Food Grade, Tech grade
Groups	Inorganic Compounds, Acid
MARKETS	Construction, Textile, Paper, Food, Home Care and I&I Cleaning

Specification

Appearance	Colorless transparent or slightly pale, viscous liquid
Physical State	Liquid
Storage	Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Melting Point	162 ℃
Density	1.874 g/cm³ at 20 ℃

Package

35kg drum or 330kg drum; 1650kg IBC;

Can be customized according to customer requirements and applications.

Cas 7664-38-2 Phosphoric Acid Packaging

FAQ

Q1: What are the different processes for phosphoric acid？

A: Phosphoric acid is categorized into hot acid and wet acid due to different processes. Thermal acid price is high.

By the way, wet process phosphoric acid, the process cost is low, is the international mainstream process. Phosphoric acid produced by thermal phosphoric acid production process has good quality and high concentration, but due to high energy consumption, high cost, and the production of dust and toxic gas during production, its application ratio in the world is gradually decreasing.

Q2: Is Phosphoric acid safe to use?

A: Although phosphoric acid is non-toxic, 85% of concentrated phosphoric acid is corrosive. Avoid skin and eye contact when using. and wear appropriate protective clothing, gloves and eye/face protection.

Q3: How is phosphoric acid used in sugarcane plants?

A: Used in uplift clarification process. Phosphoric acid, a small amount of milk of lime, flocculants and air bubbles are added to the mixed juice to remove a large amount of organic non-sugar components first under neutral conditions; then the carbonic acid method of clarification process is utilized to remove the pigments and other non-sugar components within the sugar juice.

Q4: What grade of Phosphoric acid can TJCY Industrial Chemical provide?

A: Generally more than phosphoric acid 85% and phosphoric acid 75%.

Q5: What phosphoric acid packaging options can I choose?

A: We can provide 35kg drum or 330kg drum; 1650kg IBC; Also can be customized according to customer requirements and applications.

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