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Potassium dihydrogen phosphate, Puratronic™, 99.999% (metals basis), Si 10ppm max

Catalog No. AA1084022
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Catalog No. AA1084022 Supplier Thermo Scientific Chemicals Supplier No. 01084022
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CAS: 7778-77-0 | H2KO4P | 136.08 g/mol

Potassium dihydrogen phosphate is used as a food additive, fertilizer (NPK), paint additive, coating additive, adhesive, buffering agent and in optical modulators. It is extensively used in research and analytical laboratories as a buffer in mobile/sample preparations for analysis by high pressure liquid chromatography (HPLC) and also in organic synthesis. MKP, monopotassium phosphate, owing to its non-linear optical properties, is used in optical modulators and for second-harmonic generation (SHG).

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers

CAS 7778-77-0
Molecular Formula H2KO4P
Molecular Weight (g/mol) 136.08
MDL Number MFCD00011401 MFCD00147253
InChI Key GNSKLFRGEWLPPA-UHFFFAOYSA-M
Synonym potassium dihydrogen phosphate, monopotassium phosphate, potassium phosphate monobasic, potassium phosphate, monobasic, potassium acid phosphate, phosphoric acid, monopotassium salt, monobasic potassium phosphate, monopotassium monophosphate, monopotassium dihydrogen phosphate, monopotassium orthophosphate
PubChem CID 516951
ChEBI CHEBI:63036
SMILES [K+].OP(O)([O-])=O

Specifications

Melting Point 253°C
Color White
Physical Form Crystalline Powder
Quantity 100 g
Linear Formula KH2PO4
Merck Index 14,7659
Solubility Information Soluble in water; slightly soluble in ethanol .
IUPAC Name potassium;dihydrogen phosphate
Formula Weight 136.09
Percent Purity 99.999%
Grade Puratronic
Concentration or Composition (by Analyte or Components) Si 10ppm max.
Sensitivity Hygroscopic
Density 2.338 g/mL
Assay (metals basis)
Chemical Name or Material Potassium dihydrogen phosphate
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Hazard Category Warning
Hazard Statement GHS H Statement
H315-H319
Causes skin irritation.
Causes serious eye irritation.
Precautionary Statement GHS P Statement
P280-P305+P351+P338-P362-P321-P332+P313-P337+P313
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Take off contaminated clothing and wash before reuse.
Specific treatment (see ... on this label).
If skin irritation occurs: Get medical advice/attention.
If eye irritation persists: Get medical advice/attention.
EINECSNumber 231-913-4
RTECSNumber TC6615500
TSCA Yes
Recommended Storage Ambient temperatures

RUO – Research Use Only