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7778-77-0

Name Potassium dihydrogen phosphate
CAS 7778-77-0
EINECS(EC#) 231-913-4
Molecular Formula H2KO4P
MDL Number MFCD00011401
Molecular Weight 136.09
MOL File 7778-77-0.mol

Chemical Properties

Appearance White powder
Melting point  252.6 °C (lit.)
Boiling point  > 450 °C
density  2.338 g/mL at 25 °C(lit.)
vapor pressure  0Pa at 25℃
storage temp.  Store at RT.
solubility  H2O: 1.5 M at 20 °C, clear, colorless
form  powder
color  White transparent
Specific Gravity 2.338
Odor Odorless
PH 4.2-4.6 (20g/l, H2O, 20℃)
pka (1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)
Water Solubility  222 g/L (20 ºC)
Decomposition  253 °C
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.046
λ: 280 nm Amax: 0.040
Merck  14,7659
Stability: Hygroscopic
InChIKey GNSKLFRGEWLPPA-UHFFFAOYSA-M
Uses
Potassium Dihydrogen is a buffer, neutralizing agent, and sequestrant. It is mildly acid, with a ph of 4.5, and fairly soluble in water, with a solubility of 25 g in 100 ml at 25°c. It is used in whole eggs for color preservation and is also used in low-sodium products, milk products, and meat products. Typical usage ranges from 0.1 to 0.5%. It is also termed monopotassium phosphate or thophosphate, potassium phosphate monobasic, and monopotassium monophosphate.
CAS DataBase Reference 7778-77-0(CAS DataBase Reference)
EPA Substance Registry System 7778-77-0(EPA Substance)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/38:Irritating to eyes and skin .
R35:Causes severe burns.
R22:Harmful if swallowed.
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
RIDADR  3260
WGK Germany  2
RTECS  TC6615500
8-10
HS Code  28352400
Hazardous Substances Data 7778-77-0(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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