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Merck

V800317

Sigma-Aldrich

Potassium phosphate monobasic

LR, ≥98%

Synonym(s):

Potassium dihydrogen phosphate, prim.-Potassium phosphate

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About This Item

Linear Formula:
KH2PO4
CAS Number:
7778-77-0
Molecular Weight:
136.09
EC Number:
231-913-4
MDL number:
MFCD00011401
UNSPSC Code:
12352302
PubChem Substance ID:
329829302
Assay:
≥98%
Grade:
LR
Form:
crystalline powder

Key Documents

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grade

LR

product line

Vetec™

Assay

≥98%

form

crystalline powder

pH

4.3-4.5 (5% in water)

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-): ≤0.01%
sulfate (SO42-): ≤0.05%

cation traces

Na: ≤0.20%

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

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Legal Information

Vetec is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BGBC1335V
BGBB9629
BGBC0567

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