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Potassium phosphate monobasic

Catalog No. 30407 Name Sigma Aldrich
CAS Number 7778-77-0 Website http://www.sigmaaldrich.com
M. F. H2KO4P Telephone 1-800-521-8956
M. W. 136.085541 Fax
Purity 99.5-100.5% (calc. on dry substance) Email
Storage Chembase ID: 105585

SYNONYMS

Title
磷酸钾 一元
IUPAC name
potassium dihydrogen phosphate
IUPAC Traditional name
potassium dihydrogen phosphate
Synonyms
prim.-Potassium phosphate
Potassium dihydrogen phosphate
无水磷酸二氢钾
Monopotassium phosphate
磷酸一钾
磷酸二氢钾

DATABASE IDS

PubChem SID 24858321
CAS Number 7778-77-0
MDL Number MFCD00011401
EC Number 231-913-4

PROPERTIES

Antion Traces chloride (Cl-): ≤5 mg/kg
Antion Traces sulfate (SO42-): ≤30 mg/kg
Cation Traces As: ≤0.5 mg/kg
Cation Traces Fe: ≤5 mg/kg
Cation Traces Na: ≤200 mg/kg
Grade reag. ISO, reag. Ph. Eur.
Grade puriss. p.a.
Impurities KMnO4 red. Matter (as O), complies
Impurities ≤0.0005% heavy metals (as Pb)
Impurities ≤0.001% total nitrogen (N)
Linear Formula KH2PO4
Loss on Drying ≤0.2% loss on drying, 130 °C
Purity 99.5-100.5% (calc. on dry substance)
Suitability in accordance for appearance of solution
pKa (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25°C)
Density 2.338 g/mL at 25 °C(lit.)
Melting Point 252.6 °C(lit.)
pH 4.2-4.5 (20 °C, 5%)
MSDS Link Download
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
RTECS TC6615500
German water hazard class 2

DETAILS

REFERENCES