Name | Phosphoric acid, potassium salt |
Synonyms | Phosphoric acid, potassium salt phosphoric acid, potassium salt |
CAS | 16068-46-5 |
EINECS | 240-213-8 |
InChI | InChI=1/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1 |
Molecular Formula | K3O4P |
Molar Mass | 212.266261 |
Boling Point | 158°C at 760 mmHg |
Vapor Presure | 1.41mmHg at 25°C |
Physical and Chemical Properties | Colorless orthorhombic crystal or white crystalline powder. Soluble in water, insoluble in alcohol. The aqueous solution is strongly alkaline. |
colorless orthorhombic crystal or white crystalline powder. Relative density d17 2.564. Melting point 1340 °c. Soluble in water, insoluble in alcohol. The aqueous solution is strongly alkaline. Highly corrosive. Strong hygroscopicity.
neutralization method: add 50% phosphoric acid solution into the corrosion-resistant reaction tank, add 30% potassium hydroxide solution according to the molar ratio of t potassium hydroxide phosphate to 1:2, and carry out neutralization reaction under stirring, the pH value is controlled at about 8.5 to 9 to generate a dipotassium hydrogen phosphate solution. Then it is sent to the secondary neutralizer to add 30% potassium hydroxide solution for neutralization reaction, and the end point is controlled at pH 14 to generate tripotassium phosphate solution, which is concentrated by evaporation to a relative density of 1. 38~1. 46 hours, and then cooled to 60 degrees Celsius by cooling mold, after centrifugal separation, prepared three potassium phosphate products. The concentrated tripotassium phosphate solution can also be obtained by centrifugal separation without cooling the crystallizer while hot. The separated mother liquor was returned to the evaporator.
used in the manufacture of liquid soap, refined gasoline, and high-quality paper. It is a phosphorus and potassium fertilizer. It can be used as a boiler water softener. It is also used in medicine.
lined with polyethylene plastic bag, jacket plastic woven bag or hemp bag packaging, each net weight of 50kg or l00kg. The package should have obvious "avoid heated knife," moisture "signs. See potassium dihydrogen phosphate for storage.
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | used in the manufacture of liquid soap, high quality paper, refined gasoline; Used in the food industry as emulsifiers, fortifiers, flavoring agents, meat binder; Can also be used as fertilizer |