Specification parameters

中文名称	磷酸三钠
中文别名	磷酸钠(工业); ATSP; 无水磷酸三钠; 磷酸三钠(无水); 无水磷酸钠; 磷酸钠; TSP; 磷酸三钠
英文名称	trisodium phosphate anhydrous
CAS NO.	7601-54-9
分子式	Na3PO4
分子量	163.94
分子结构

Essential information

Trisodium phosphate is a white odorless crystal or particle, or crystalline powder. Soluble in water, insoluble in organic solvents such as ethanol and carbon disulfide. Weathering in dry air, at 100 ° C, it loses twelve crystalline waters and becomes anhydrous (Na3PO4). The aqueous solution is alkaline and has a certain erosive effect on the skin.

Application area 

Used as a water softener and detergent in industries such as chemical, textile, printing and dyeing, papermaking, and power generation, boiler anti scaling agent, water softener in paper dyeing, pH buffering agent for adhesives used in wax paper production, fixing agent during printing and dyeing, silk gloss enhancer for fabrics, and anti brittleness agent for production lines. Metallurgical industry is used as a chemical degreasing and cleaning agent, and as an excellent promoter in photographic development solutions. Teeth cleaning agents and bottle cleaning detergents. Coagulant for rubber milk. Sugar juice purifier. Phosphates play a role in improving the quality of food processing, such as maintaining the water holding capacity of meat and enhancing cohesion in meat products, in order to reduce the loss of nutrients in meat and preserve its tenderness. It is also used as an emulsifier, nutritional supplement, and quality improver in food processing. It is a raw material for preparing alkaline water for noodles, and is also used for refining sugar and manufacturing alpha starch. It is also used as a detergent for food bottles, cans, etc.

Solid trisodium phosphate (TSP) belongs to the category of strong alkali and weak acid salts, with strong alkalinity and high solubility. It has stable chemical properties and can be stored for a long time. Adding TSP instead of NaOH to the spray water of the containment spray system (EAS) can adjust the pH value of the spray liquid, effectively remove iodine gas released from the leaked cooling water into the containment, avoid harm to workers caused by strong alkali, and is easy to clean up after accidents.

Packaging, Storage, Transportation, and Safety

Emergency measures
Skin contact: Remove contaminated clothing and immediately rinse thoroughly with plenty of flowing water for at least 15 minutes. Seek medical attention.
Eye contact: Immediately open the upper and lower eyelids and rinse with flowing water or saline solution for at least 15 minutes. Seek medical attention.
Inhalation: Quickly leave the scene and move to a place with fresh air. Keep the respiratory tract unobstructed. Administer oxygen when experiencing difficulty breathing. When breathing stops, immediately perform artificial respiration. Seek medical attention.
Ingestion: If ingested by mistake, rinse mouth immediately and drink milk or egg white. Seek medical attention.  

Fire protection measures
Fire extinguishing method and extinguishing agent: non combustible. The available extinguishing media around the fire scene.
Wear a mask and gloves. Mix with sand, dry lime or soda ash, and then bury deep in a dedicated abandoned site. If there is a large amount of leakage, collect, recycle or dispose of it harmlessly before disposal.  

Transportation matters
Store in a cool and ventilated room. Stay away from sources of fire and heat. The packaging requires sealing and must not come into contact with air. Moisture and sun protection. It should be stored separately from acids and other substances. Handle with care during transportation to prevent damage to packaging and containers.