$121

Part Number:MIL-P0662-1KG
Lead Time:7-14 days
Quantity:each
Size:1 kg
Style:chemical

Category: ACS Grade Chemicals

Description
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Potassium Phosphate Monobasic ACS Reagent ≥99.0% 1 Kg

Synonym: Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate

CAS Number 7778-77-0
Linear Formula KH2PO4
Molecular Weight 136.09
EC Number 231-913-4
MDL number MFCD00011401
PubChem Substance ID 329820048
NACRES NA.21

Quality Level	100
	200
grade	ACS reagent
assay	≥99.0%
impurities	≤0.01% Insoluble matter
loss	≤0.2% loss on drying, 105°C
pH	4.1-4.5 (25 °C, 5%)
pKa (25 °C)	(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp	252.6 °C (lit.)
density	2.338 g/mL at 25 °C (lit.)
anion traces	chloride (Cl-): ≤0.001%
	sulfate (SO42-): ≤0.003%
cation traces	Fe: ≤0.002%
	Na: ≤0.005%
	heavy metals: ≤0.001% (by ICP-OES)
SMILES string	[K+].OP(O)([O-])=O
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

General description

Potassium phosphate monobasic (monopotassium orthophosphate) is a water soluble inorganic salt. Its standard enthalpy of formation has been reported to be -376.1kcalmol^-1. It acts a starting material in the synthesis of potassium metaphosphate.

Application

Potassium phosphate monobasic has been used in the preparation of phosphate buffer and phosphate buffered saline (PBS). It has also been used in the preparation of PEG1000 (poly ethylene glycol)/potassium phosphate aqueous two-phase systems (ATPS).