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Potassium dihydrogen phosphate

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Name

Potassium dihydrogen phosphate

EINECS 231-913-4
CAS No. 7778-77-0 Density 2.338 g/mL at 25 °C(lit.)
PSA 90.40000 LogP -0.49040
Solubility water: 222 g/L (20 °C) Melting Point 252.6 °C(lit.)
Formula KH2PO4 Boiling Point 158oC at 760 mmHg
Molecular Weight 136.08 Flash Point N/A
Transport Information N/A Appearance white powder
Safety 24/25-45-36/37/39-26 Risk Codes 36/38-35-22
Molecular Structure Molecular Structure of 7778-77-0 (Potassium dihydrogen phosphate) Hazard Symbols FlammableF,ToxicT,CorrosiveC,IrritantXi
Synonyms

Potassium phosphate (xK);Monopotassium phosphate (industrial grade);Potassiumphosphatemonobasic;Mono Potassium Phosphate(MKP);Mono-potassium phosphate (MKP);Potassium phosphate,monobasic;Monopotassium phosphate anhydrous;Monopotassium phosphate (MKP);Industrial Grade Monopotassium Phosphate MKP;Potassium Phosphate Monobasic ACS Powder;Orthophosphoric acid, monopotassium salt;Potassium hydrogen phosphate (KH2PO4);Phosphoric acid, monopotassium salt;Sorensens potassium phosphate;Potassium dihydrogenorthophosphate;Monopotassium Phosphate(MKP);Monopatassium phosphate;Monopotassium Phosphate;Potassium Phosphate Monobasic;MonoPotassium Phosphate; potassium dihydrogen phosphate; MKP;

 

Potassium dihydrogen phosphate Specification

1. Introduction of Potassium dihydrogen phosphate
Potassium dihydrogen phosphate, its cas register number is 7778-77-0. It also can be called Monobasic potassium phosphate ; Monopotassium dihydrogen phosphate ; Monopotassium monophosphate ; Monopotassium orthophosphate ; Monopotassium phosphate ; Orthophosphoric acid, monopotassium salt ; hosphoric acid, monopotassium salt ; Potassium acid phosphate ; Potassium dihydrogen orthophosphate ; Potassium orthophosphate, dihydrogen ; Potassium phosphate, monobasic ; Sorensen's potassium phosphate. 

2. Properties of Potassium dihydrogen phosphate
Boiling Point: 158 °C at 760 mmHg 
Melting Point: 252.6 °C(lit.)
Density: 2.338 g/mL at 25 °C(lit.)
Storage temp: Store at RT.
Solubility: H2O: 1.5 M at 20 °C, clear, colorless
Water Solubility: 222 g/L (20 ºC)
Sensitive: Hygroscopic
Vapour Pressure: 1.41 mmHg at 25°C 
Product Categories: Inorganics;Anionic SolutionsChromatography;Anionic Standard SolutionsAlphabetic;Application CRMs;Ion

3. Structure Descriptors of Potassium dihydrogen phosphate
Chromatography;Ion Chromatography Standards;P;PER - POLA 
Canonical SMILES: OP(=O)(O)[O-].[K+]
InChI: InChI=1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
InChIKey: GNSKLFRGEWLPPA-UHFFFAOYSA-M

4. Toxicity of Potassium dihydrogen phosphate

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin > 4640mg/kg (4640mg/kg)   National Technical Information Service. Vol. OTS0571153,
rat LDLo oral 4640mg/kg (4640mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

GASTROINTESTINAL: OTHER CHANGES
National Technical Information Service. Vol. OTS0571153,

5. Safety Information of Potassium dihydrogen phosphate

Hazard Codes: FlammableF,ToxicT,CorrosiveC,IrritantXi
Risk Statements: 36/38-35-22 
R36/38:Irritating to eyes and skin. 
R35:Causes severe burns. 
R22:Harmful if swallowed.
Safety Statements: 24/25-45-36/37/39-26
S24/25:Avoid contact with skin and eyes. 
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. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RIDADR: 3260
WGK Germany: 2
RTECS: TC6615500
F: 8-10
HS Code: 28352400

6. Use of Potassium dihydrogen phosphate
Potassium dihydrogen phosphate is used as a fertilizer, a food additive and a fungicide. It is used in optical modulators and for non-linear optics such as SHG (second-harmonic generation).

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