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Potassium phosphate

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Potassium phosphate

EINECS 231-907-1
CAS No. 7778-53-2 Density 2.564 g/mL at 25 °C(lit.)
PSA 96.06000 LogP 0.38600
Solubility 50.8 g/100 mL (25 °C) in water Melting Point 1340 °C
Formula K3O4P Boiling Point 158 °C at 760 mmHg
Molecular Weight 212.27 Flash Point N/A
Transport Information UN 1805 8/PG 3 Appearance white powder or crystals
Safety 26-39-45-36/37/39 Risk Codes 38-41-34
Molecular Structure Molecular Structure of 7778-53-2 (Potassium phosphate) Hazard Symbols CorrosiveC, IrritantXi

Phosphoricacid, tripotassium salt (8CI,9CI);Potassium orthophosphate;Potassiumphosphate;Potassium phosphate (K3PO4);Potassium tribasic phosphate;SA 811;Tripotassium orthophosphate;Tripotassium phosphate;Phosphoric acid,potassium salt (1:3);Potassium phosphate, tribasic;


Potassium phosphate Chemical Properties

IUPAC Name: Tripotassium phosphate 
Following is the structure of Potassium phosphate, tribasic (CAS NO.7778-53-2):
Molecular Formula: K3O4P
Formula Weight: 212.27
Melting point: 1340 °C
Density : 2.564 g/mL at 25 °C(lit.)
Water Solubility : 50.8 g/100 mL (25 °C)
Boiling Point: 158 °C at 760 mmHg
Vapour Pressure: 1.41 mmHg at 25 °C
Sensitive : Hygroscopic
Merck : 14,7660
Appearance: Solid. white powder or crystal
Solubility: soluble in water. Insoluble in alcohol
Stability: stable. Incompatible with strong oxidizing agents, moisture.
Product Categories of Potassium phosphate, tribasic (CAS NO.7778-53-2): Inorganics
Canonical SMILES: [O-]P(=O)([O-])[O-].[K+].[K+].[K+]
InChI: InChI=1S/3K.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3

Potassium phosphate Toxicity Data With Reference


skn-rbt LD:>300 mg/kg

    JACTDZ    Journal of the American College of Toxicology. 1 (1990),47.

 Potassium phosphate, tribasic (CAS NO.7778-53-2) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. And the toxicological properties have not been fully investigated. You can see actual entry in RTECS for complete information.

Potassium phosphate Consensus Reports

Reported in EPA TSCA Inventory.

Potassium phosphate Safety Profile

Hazard Codes: CorrosiveC,IrritantXi
Risk Statements: 38-41-34 
R38:Irritating to skin. 
R41:Risk of serious damage to the eyes. 
R34:Causes burns.
Safety Statements: 26-39-45-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S39:Wear eye / face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 1805 8/PG 3
WGK Germany: 2
RTECS: TC8450000
F: 8-10

Potassium phosphate Specification

 Potassium phosphate, tribasic , its cas register number is 7778-53-2. It also can be called CCRIS 7321 ; Phosphoric acid, tripotassium salt ; Potassium orthophosphate ; Potassium phosphate ; Potassium phosphate (K3PO4) ; Potassium phosphate, tribasic ; Tripotassium phosphate ; and UNII-16D59922JU .
 Potassium phosphate, tribasic (CAS NO.7778-53-2) could be stable under normal temperatures and pressures. It absorbs moisture or water from the air. It should avoid the condition like incompatible materials, exposure to moist air or water. It is not compatible with strong oxidizing agents. However, its hazardous polymerization will not occur. In addition, be sure that Potassium phosphate, tribasic (CAS NO.7778-53-2) is not necessary to strain to reach materials, and that shelves are not overloaded. Use shelves or cabinets sturdy enough to bear the weight of the chemicals.

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