Tartrate double de potassium et de sodium tetrahydrate

Nom du produit

Tartrate double de potassium et de sodium tetrahydrate, puriss., 99.0-101.0% (calc. on H₂O free substance), meets analytical specification of Ph. Eur., BP, USP, FC, E 337

InChI key

VZOPRCCTKLAGPN-ZFJVMAEJSA-L

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

SMILES string

O.O.O.O.[Na+].[K+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O

grade

puriss.

assay

99.0-101.0% (calc. on H₂O free substance)

form

solid

optical activity

[α]20/D +28.0 to +30.0°

quality

meets analytical specification of Ph. Eur., BP, USP, FC, E 337

impurities

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)

loss

21-26% loss on drying, 150 °C, 3 h

pH

6.5-8.5 (20 °C, 1%)

anion traces

chloride (Cl^-): ≤20 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

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

suitability

passes test for appearance of solution

Quality Level

200