Difference between revisions of "Potassium sodium tartrate"
From Sciencemadness Wiki
| Line 53: | Line 53: | ||
| BoilingPt_ref = | | BoilingPt_ref = | ||
| BoilingPt_notes = | | BoilingPt_notes = | ||
| − | | Density = | + | | Density = 1.79 g/cm³ |
| Formula = KNaC4H4O6·4H2O | | Formula = KNaC4H4O6·4H2O | ||
| HenryConstant = | | HenryConstant = | ||
| LogP = | | LogP = | ||
| − | | MolarMass = | + | | MolarMass =282.1 g/mol |
| − | | MeltingPt = | + | | MeltingPt = 167 |
| − | | MeltingPtC = | + | | MeltingPtC = 75 |
| − | | MeltingPt_ref = | + | | MeltingPt_ref= |
| MeltingPt_notes = | | MeltingPt_notes = | ||
| pKa = | | pKa = | ||
| pKb = | | pKb = | ||
| − | | Solubility = | + | | Solubility = 26 g / 100 mL (0 ℃); 66 g / 100 mL (26 ℃) |
| SolubleOther = | | SolubleOther = | ||
| Solvent = | | Solvent = | ||
| Line 131: | Line 131: | ||
==Projects== | ==Projects== | ||
* [[Biuret Reagent]] | * [[Biuret Reagent]] | ||
| + | * [[Fehling's Solution]] | ||
==Handling== | ==Handling== | ||
| + | Can be irritating to skin. | ||
===Safety=== | ===Safety=== | ||
| Line 140: | Line 142: | ||
===Disposal=== | ===Disposal=== | ||
| + | Dissolve in large excess of water and put down drain. | ||
==References== | ==References== | ||
Revision as of 17:12, 7 February 2016
| Names | |
|---|---|
| IUPAC name
Sodium potassium L(+)-tartrate tetrahydrate
| |
| Other names
Rochelle Salt
Seignette Salt | |
| Properties | |
| KNaC4H4O6·4H2O | |
| Molar mass | 282.1 g/mol |
| Appearance | large colorless monoclinic needles |
| Density | 1.79 g/cm³ |
| Melting point | 167 75 °C (167 °F; 348 K) |
| 26 g / 100 mL (0 ℃); 66 g / 100 mL (26 ℃) | |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Potassium sodium tartrate (tetrahydrate), more commonly known as Rochelle Salt, is a double salt of tartaric acid first prepared (around 1675) by an apothecary, Pierre Seignette, of La Rochelle, France.
Contents
Properties
Chemical
Physical
Uses
- Potassium Sodium Tartrate is used in the preparation of Biuret reagent.
- Potassium Sodium Tartrate is used in the the preparation of Fehling's Solution
- Potassium Sodium Tartrate is used in "crystal" microphones.
- Potassium Sodium Tartrate is used as an alkaline buffer.
- Potassium Sodium Tartrate has been used as a laxative.
Availability
Potassium Sodium Tartrate is readily available on EBay.
Preparation
Delete this section if not applicable
Projects
Handling
Can be irritating to skin.
Safety
Storage
Potassium Sodium Tartrate is very deliquescent and should be stored in a sealed container.
Disposal
Dissolve in large excess of water and put down drain.
