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Merck
CN

60412

Potassium sodium tartrate tetrahydrate

puriss. p.a., ACS reagent, ≥99.0% (NT)

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:
Molecular Weight:
282.22
EC Number:
206-156-8
UNSPSC Code:
12352100
MDL number:
Beilstein/REAXYS Number:
6113568
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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

SMILES string

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

grade

ACS reagent, puriss. p.a.

assay

≥99.0% (NT)

optical activity

[α]20/D +22±1°, c = 1% in H2O

pH

6.0-8.5 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤10 mg/kg, phosphate (PO43-): ≤10 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤25 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, NH4+: ≤20 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

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Storage Class

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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