| Identification | More | [Name]
Potassium sodium tartrate tetrahydrate | [CAS]
6381-59-5 | [Synonyms]
L-(+)-ROCHELLE SALT
L(+)-TARTARIC ACID POTASSIUM SODIUM SALT TETRAHYDRATE
L-TARTARIC ACID SODIUM POTASSIUM SALT
POTASSIUM SODIUM L-TARTRATE TETRAHYDRATE
POTASSIUM SODIUM TARTARATE TETRAHYDRATE
POTASSIUM SODIUM TARTRATE
POTASSIUM SODIUM TARTRATE-4 H2O
POTASSIUM SODIUM TARTRATE, 4-HYDRATE
POTASSIUM SODIUM TARTRATE HYDRATE
POTASSIUM SODIUM (+)-TARTRATE TETRAHYDRATE
POTASSIUM SODIUM TARTRATE TETRAHYDRATE
(+)-POTASSIUM SODIUM TARTRATE TETRAHYDRTE
ROCHELLE SALT
ROCHELLE SALT HYDRATE
ROCHELLE SALT STABILIZER
ROCHELLE SALT TARTRATE
ROCHELLE SALT TETRAHYDRATE
[R-(R*,R*)]-2,3-Dihydroxybutanedioic acid monopotassium monosodium salt
SEIGNETTE SALT
SEIGNETTE SALT TETRAHYDRATE | [EINECS(EC#)]
206-156-8 | [Molecular Formula]
C4H12KNaO10 | [MDL Number]
MFCD00150989 | [Molecular Weight]
282.22 | [MOL File]
6381-59-5.mol |
| Chemical Properties | Back Directory | [Appearance]
white semi-transparent crystals | [Melting point ]
70-80 °C
| [alpha ]
22.1 º (c=10, water) | [Boiling point ]
220°C | [density ]
1.05 g/mL at 20 °C
| [refractive index ]
22 ° (C=10, H2O) | [storage temp. ]
2-8°C
| [solubility ]
H2O: 1 M at 20 °C, clear, colorless
| [form ]
Solid | [color ]
White semi-transparent | [Odor]
Odorless | [PH]
7.0-8.5 (25℃, 50mg/mL in H2O) | [PH Range]
6.0 - 8.5 | [optical activity]
[α]20/D +28.0 to +30.0° | [Water Solubility ]
630 g/L (20 ºC) | [λmax]
λ: 260 nm Amax: 0.026
λ: 280 nm Amax: 0.022 | [Merck ]
14,7670 | [BRN ]
6113568 | [LogP]
-1.426 (est) | [CAS DataBase Reference]
6381-59-5(CAS DataBase Reference) | [NIST Chemistry Reference]
Sodium potassium tartrate tetrahydrate(6381-59-5) |
| Safety Data | Back Directory | [Hazard Codes ]
F,T,C,Xi | [Risk Statements ]
R22:Harmful if swallowed.
R35:Causes severe burns. | [Safety Statements ]
S22:Do not breathe dust .
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 . | [WGK Germany ]
3
| [TSCA ]
Yes | [HS Code ]
29181300 |
| Hazard Information | Back Directory | [Chemical Properties]
white semi-transparent crystals | [Uses]
Constituent of Fehling's solution | [Preparation]
Potassium sodium tartrate tetrahydrate is obtained by the follow steps:The starting material is tartar with a minimum tartaric acid content 68 %. This is first dissolved in water or in the mother liquor of a previous batch. It is then basified with hot saturated sodium hydroxide solution to pH 8, decolorized with activated charcoal, and chemically purified before being filtered. The filtrate is evaporated to 42 °Bé at 100 °C, and passed to granulators in which Seignette's salt crystallizes on slow cooling. The salt is separated from the mother liquor by centrifugation, accompanied by washing of the granules. | [General Description]
Potassium sodium tartrate tetrahydrate is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient. | [Biochem/physiol Actions]
Potassium sodium tartrate tetrahydrate might be used as a buffering agent in cosmetic products. It is also used as a food additive. Certain studies show that it produces acute renal toxicity in rabbits and dogs. | [Purification Methods]
Recrystallise it from distilled water (solubility: 0.4mL/g at 100o, 0.7mL/g at 14o). [Beilstein 3 IV 1223.] |
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