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Potassium sodium tartrate tetrahydrate

Name: Potassium sodium tartrate tetrahydrate
Brand: SIAL

ACS reagent, 99%

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Synonym(s):

L(+)-Tartaric acid potassium Sodium salt, Rochelle salt, Seignette salt

Linear Formula:

KOCOCH(OH)CH(OH)COONa · 4H₂O

CAS Number:

6381-59-5

Molecular Weight:

282.22

Beilstein:

6113568

EC Number:

206-156-8

MDL number:

MFCD00150989

PubChem Substance ID:

24853005

NACRES:

NA.21

grade

ACS reagent

Quality Level

200

Agency

suitable for SM 4500 - NH3

Assay

99%
99.0-102.0% (ACS specification)

form

powder or crystals

impurities

≤0.005% insolubles

pH

6.0-8.5

anion traces

chloride (Cl^-): ≤0.001%
phosphate (PO₄^3-): ≤0.002%
sulfate (SO₄^2-): ≤0.005%

cation traces

Ca: ≤0.005%
Fe: ≤0.001%
NH₄⁺: ≤0.002%
heavy metals: ≤5 ppm (by ICP)

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

InChI key

VZOPRCCTKLAGPN-ZFJVMAEJSA-L

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General description

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

Application

Potassium sodium tartrate tetrahydrate has been used in the preparation of Lowry reagent for the determination of microsomal protein concentration in rat hepatic microsomes by Lowry method. It may be used as a constituent to prepare DNS (3,5- dinitrosalicylic acid) reagent and Fehling′s solution B, which are used in the determination of reducing sugar.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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