罗谢尔盐 四水合物

KOCOCH(OH)CH(OH)COONa · 4H₂O

282.22

6113568

206-156-8

MFCD00150989

57648125

NA.21

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

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

200

puriss.

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

[α]20/D +28.0 to +30.0°

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)

21-26% loss on drying, 150 ℃, 3 h

6.5-8.5 (20 ℃, 1%)

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

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

passes test for appearance of solution

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

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

VZOPRCCTKLAGPN-ZFJVMAEJSA-L

13 - Non Combustible Solids

WGK 1

Eyeshields, Gloves, type N95 (US)