CAS 7778-77-0 Potassium dihydrogen orthophosphate(v)

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Potassium dihydrogen orthophosphate(v)

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Catalog Number

ACM7778770

CAS Number

7778-77-0

Product Name

Potassium dihydrogen orthophosphate(v)

Structure

Category

Electrolytes

Description

DryPowder; Liquid; OtherSolid; PelletsLargeCrystals;Odourless, colourless crystals or white granular or crystalline powder;COLOURLESS CRYSTALS OR WHITE CRYSTALLINE POWDER.

IUPAC Name

potassium;dihydrogen phosphate

Molecular Weight

136.086g/mol

Molecular Formula

KH2PO4;KH2PO4;KH2PO4;H2KO4P

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

InChI Key

GNSKLFRGEWLPPA-UHFFFAOYSA-M

Melting Point

Mp 272 °;253 °C;253 °C

Density

2.34 g/cu cm;2.34 g/cm³

Solubility

Freely soluble in water. Insoluble in ethanol;Soluble in about 4.5 parts water; insoluble in alcohol;Solubility: 25 g/100 cc water at 25 °C. Slightly soluble in ethanol;Solubility in water, g/100ml: 22

Color/Form

Colorless crystals or white granular powder;White tetragonal crystals

Complexity

61.9

Covalently-Bonded Unit Count

EC Number

231-913-4;231-913-4

Exact Mass

135.932777g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1608

MeSH Entry Terms

dipotassium hydrogen phosphate;K2HPO4;KD2PO4;potassium acid phosphate;potassium dideuterium phosphate;potassium dihydrogen phosphate;potassium monohydrogen phosphate;potassium phosphate;potassium phosphate (K-H2PO4);potassium phosphate (K-H3PO4(1:2));potassium phosphate (K2-HPO4);potassium phosphate (K3-PO4);potassium phosphate, dibasic;potassium phosphate, monobasic;potassium phosphate, unspecified form

Monoisotopic Mass

135.932777g/mol

Odor

Odorless

Other Experimental

Permanent in air. At 400 °C loses water, forming metaphosphate;pH = 4.5 (1% aqueous solution). Forms ferroelectric crystals (Critical temperature = -151 °C);Solubility: 18 g/100g water /Monopotassium phosphate anhydrous/;At ordinary temperatures, monopotassium phosphate is so far above its Curie point as to give piezoelectric effects in which the emf is proportional to the distorting force. There is virtually no hysteresis.;Curie point: 123 K; Spontaneous polarization: 4.7 uC/cu cm at 110 K

Refractive Index

Index of refraction: 1.5093, 1.4682, both at 589 nm

Rotatable Bond Count

RTECS Number

TC6615500

UNII

4J9FJ0HL51

MSDS

Download MSDS

COA

Download COA

Spec Sheet