what does monopotassium phosphate mean?

Question

just asking

Answer 1

Monopotassium phosphate
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Monopotassium phosphate
Image:Monopotassium phosphate.jpg
General
Systematic name Potassium dihydrogenphosphate
Other names Monopotassium phosphate;
Phosphoric acid,
monopotassium salt
Molecular formula KH2PO4
Molar mass 136.09 g/mol
Appearance White powder
CAS number [7778-77-0 ]
Properties
Density and phase 2.34 g/cm3, solid
Solubility in water 22 g/100 ml
Melting point 235°C
Boiling point 400°C, dec
Acidity (pKa) ?
Basicity (pKb) ?
Structure
Molecular shape ?
Coordination
geometry ?
Crystal structure ?
Dipole moment ? D
Hazards
MSDS External MSDS]]
Main hazards ?
NFPA 704
010
Flash point ?°C
R/S statement R: ?
S: ?
RTECS number ?
Supplementary data page
Structure and
properties n, εr, etc.
Thermodynamic
data Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions ?
Other cations ?
Related ? ?
Related compounds ?
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references
Monopotassium phosphate (also potassium dihydrogen phosphate, KDP, or monobasic potassium phosphate, MKP) -- KH2PO4 -- is a soluble salt which is used as a fertilizer, a food additive and a fungicide. It is a source of phosphorus and potassium, and is a buffering agent. When used in fertilizer mixtures with urea and ammonium phosphates, it minimizes escape of ammonia by keeping the pH at a relatively low level.

Fertilizer grade MKP contains 52% P2O5 and 34% K2O, and is labeled 0-52-34. It is often used as a nutrient source in the greenhouse trade and in hydroponics.

It is one of the components of Gatorade and is used as an additive in cigarettes.

At 400°C it decomposes, by loss of water, to potassium metaphosphate (KPO3)

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Nonlinear optics use
As a crystal, it is noted for its non-linear optical properties. Used in optical modulators and for non-linear optics such as SHG (second harmonic generation).

Also to be noted is KD*P, Potassium DiDeuterium Phosphate, KD2PO4. Also used for similar applications with slighty different properties.

Answer 2

I am almost positive it is a preservative, lots of fruit drinks and other products are using preservatives now.

Answer 3

what they said