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Potassium sodium tartrate tetrahydrate

Name: Potassium sodium tartrate tetrahydrate
Brand: SIAL

ACS reagent grade, 99.0-102.0% (ACS specification), 99%, powder or crystals

Synonym(s):

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

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About This Item

Linear Formula:

KOCOCH(OH)CH(OH)COONa · 4H₂O

CAS Number:

6381-59-5

Molecular Weight:

282.22

NACRES:

NA.21

PubChem Substance ID:

24853005

UNSPSC Code:

12352100

EC Number:

206-156-8

MDL number:

MFCD00150989

Beilstein/REAXYS Number:

6113568

Assay:

99%, 99.0-102.0% (ACS specification)

Grade:

ACS reagent

Form:

powder or crystals

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Properties

Product Name

Potassium sodium tartrate tetrahydrate, ACS reagent, 99%

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

Description

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.

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Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

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