25508

Kalium-Natrium-Tartrat Tetrahydrat

puriss., 99.0-101.0% (calc. on H₂O free substance), meets analytical specification of Ph. Eur., BP, USP, FC, E 337

• Synonym(e): L-(+)-Weinsäure Kalium-Natriumsalz, Rochelle-Salz, Seignettesalz
• Lineare Formel: KOCOCH(OH)CH(OH)COONa · 4H₂O
• CAS-Nummer: 6381-59-5
• Molekulargewicht: 282.22
• Beilstein: 6113568
• EG-Nummer: 206-156-8
• MDL-Nummer: MFCD00150989
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 57648125
• NACRES: NA.21

Eigenschaften

• Qualität: puriss.; meets analytical specification of Ph. Eur., BP, USP, FC, E 337
• Qualitätsniveau: 200
• Assay: 99.0-101.0% (calc. on H₂O free substance)
• Form: solid
• Optische Aktivität: [α]20/D +28.0 to +30.0°
• Verunreinigungen: acidity or alkalinity, in accordance; residual solvent, complies; ≤0.001% heavy metals (as Pb); ≤0.003% total nitrogen (N); ≤0.004% ammonium (NH₄); ≤0.004% free alkali (as NaOH); ≤0.0075% free acid (as C₄H₆O₆); 24-26% water (Karl Fischer)
• Verlust: 21-26% loss on drying, 150 °C, 3 h
• pH-Wert: 6.5-8.5 (20 °C, 1%)
• Anionenspuren: chloride (Cl^-): ≤20 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Kationenspuren: As: ≤1 mg/kg; Ba:, in accordance; Ca: ≤50 mg/kg; Cu: ≤10 mg/kg; Fe: ≤10 mg/kg; Hg: ≤1 mg/kg; Pb: ≤2 mg/kg; Zn: ≤10 mg/kg
• Eignung: passes test for appearance of solution
• SMILES String: O.O.O.O.[Na+].[K+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O
• InChI: 1S/C4H6O6.K.Na.4H2O/c5-1(3(7)8)2(6)4(9)10;;;;;;/h1-2,5-6H,(H,7,8)(H,9,10);;;4*1H2/q;2*+1;;;;/p-2/t1-,2-;;;;;;/m1....../s1
• InChIKey: VZOPRCCTKLAGPN-ZFJVMAEJSA-L

Beschreibung

Allgemeine Beschreibung

Potassium sodium tartrate tetrahydrate (Rochelle salt) exists in the ferroelectric phase in the temperature range of 255 to 297K. In this phase, it crystallizes in the monoclinic system and exhibits space group P2₁. Saturated aqueous solution of potassium sodium tartrate (Rochelle salt) has been used for the preparation of its tetrahydrate crystals.

Potassium sodium tartrate tetrahydrate is a ferroelectric crystal with a high piezoelectric effect and electromechanical coupling coefficient.

Anwendung

Potassium sodium tartrate tetrahydrate has been used in the β-1,3-glucanase activity assay.

Potassium sodium tartrate tetrahydrate may be used as a component to prepare DNS (3,5- dinitrosalicylic acid) reagent and Fehling′s solution B, which are used in the determination of reducing sugar.

Sicherheitshinweise

• Lagerklassenschlüssel: 13 - Non Combustible Solids
• WGK: WGK 1
• Persönliche Schutzausrüstung: Eyeshields, Gloves, type N95 (US)