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| CAS No.: | 7758-11-4 |
|---|---|
| Name: | Potassium hydrogen phosphate(V) |
| Molecular Structure: | |
|
|
|
| Formula: | K2HPO4 |
| Molecular Weight: | 174.16 |
| Synonyms: | Phosphoricacid, dipotassium salt (8CI,9CI);Conclyte P;DKP;Dibasic potassium phosphate;Dipotassium hydrogen orthophosphate;Dipotassium hydrogen phosphate;Dipotassium hydrogen phosphate (K2HPO4);Dipotassium monohydrogen phosphate;Dipotassium monophosphate;Dipotassium orthophosphate;Dipotassium phosphate;Dipotassium phosphate (K2HPO4);Hydrogen dipotassium phosphate;Potassiumbiphosphate;Potassium dibasic phosphate (K2HPO4);Potassium hydrogen phosphate(K2HPO4);Potassium monohydrogen phosphate;Potassium monophosphate;Potassiumphosphate (K2HPO4);Potassium phosphate dibasic;Rhodiaphos DKP; |
| EINECS: | 231-834-5 |
| Density: | 2.44 g/cm3 |
| Melting Point: | 340 °C |
| Boiling Point: | 158 °C at 760 mmHg |
| Solubility: | 1600 g/L (20 °C) in water |
| Appearance: | White crystalline powder |
| Hazard Symbols: |
 Xi,  C,  T,  F
|
| Risk Codes: | 36-35-22 |
| Safety: | 22-24/25-36-26-45-36/37/39 |
| PSA: | 93.23000 |
| LogP: | -0.05220 |
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Chemistry
Molecule structure of Dipotassium phosphate (CAS NO.7758-11-4):
IUPAC Name: Dipotassium hydrogen phosphate
Molecular Weight: 174.175901 g/mol
Molecular Formula: HK2O4P
Density: 2.44 g/cm3
Melting Point: 340 °C
Boiling Point: 158 °C at 760 mmHg
Vapour Pressure: 1.41 mmHg at 25 °C
Storage Temp.: store at RT.
Solubility: H2O 1 M at 20 °C, clear, colorless
Water Solubility: 1600 g/L (20 °C)
Sensitive: hygroscopic
Stability: stable
H-Bond Donor: 1
H-Bond Acceptor: 4
Exact Mass: 173.888659
MonoIsotopic Mass: 173.888659
Topological Polar Surface Area: 83.4
Heavy Atom Count: 7
Complexity: 46.5
Canonical SMILES: OP(=O)([O-])[O-].[K+].[K+]
InChI: InChI=1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
InChIKey: ZPWVASYFFYYZEW-UHFFFAOYSA-L
EINECS: 231-834-5
Product Categories: Inorganics
Uses
Dipotassium phosphate (CAS NO.7758-11-4) is used in medicine, fermentation, bacterial culture and taking of potassium pyrophosphate. It can be used as common reagents and buffer for analysis but also for the pharmaceutical industry.
Production
Constantly stirring, add 30% phosphoric acid to potassium carbonate solution, and in the end as the pH value of 8.5 ~ 9.0 (phenolphthalein indicator was just red), the liquid was concentrated to 120 ~ 124 °C, after filter to remove insolubles, and then cooled to 20 °C the following crystallization, centrifugal separation and drying products, and processes in the mother liquor sent to Reuse
K2CO3+H3PO4→K2HPO4+H2O+CO2↑
Safety Profile
Hazard Codes: 
Xi, 
C, 
T, 
F
Risk Statements: 36-35-22
R36:Irritating to eyes.
R35:Causes severe burns.
R22:Harmful if swallowed.
Safety Statements: 22-24/25-36-26-45-36/37/39
S22:Do not breathe dust.
S24/25:Avoid contact with skin and eyes.
S36:Wear suitable protective clothing.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
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.
WGK Germany: 3
RTECS: TC8450000
F: 3
HS Code: 28352400
Hazardous Substances Data: 7758-11-4(Hazardous Substances Data)
Specification
Dipotassium phosphate (CAS NO.7758-11-4) is also named as CCRIS 6544 ; DKP ; Dibasic potassium phosphate ; Dipotassium hydrogen phosphate ; Dipotassium monohydrogen phosphate ; Dipotassium monophosphate ; Dipotassium orthophosphate ; Dipotassium-O-phosphate ; HSDB 935 ; Hydrogen dipotassium phosphate ; Isolyte ; Phosphoric acid, dipotassium salt ; Potassium dibasic phosphate ; Potassium monohydrogen phosphate ; Potassium monophosphate ; Potassium phosphate, dibasic ; UNII-CI71S98N1Z . Dipotassium phosphate (CAS NO.7758-11-4) is white crystalline powder.