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Merck
CN

25506

Potassium L-tartrate monobasic

puriss., meets analytical specification of Ph.Eur., BP, FCC, 99.5-100.5% (related to dried substance)

Synonym(s):

Potassium bitartrate, L-(+)-Tartaric acid monopotassium salt, Potassium hydrogen L-tartrate

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About This Item

Empirical Formula (Hill Notation):
C4H5KO6
CAS Number:
Molecular Weight:
188.18
UNSPSC Code:
51113400
NACRES:
NA.22
PubChem Substance ID:
EC Number:
212-769-1
Beilstein/REAXYS Number:
6119985
MDL number:
Assay:
99.5-100.5% (related to dried substance)
Form:
powder
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grade

puriss.

Quality Segment

assay

99.5-100.5% (related to dried substance)

form

powder

optical activity

[α]20/D +8.0 to +9.2°

quality

meets analytical specification of Ph.Eur., BP, FCC

impurities

residual solvents, in accordance, ≤0.001% heavy metals (as Pb), ≤0.05% oxalic acid

loss

≤0.2% loss on drying, 105 °C

anion traces

chloride (Cl-): ≤500 mg/kg, sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤1 mg/kg, Pb: ≤10 mg/kg

application(s)

pharmaceutical (small molecule)

functional group

carboxylic acid, hydroxyl

SMILES string

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

InChI

1S/C4H6O6.K/c5-1(3(7)8)2(6)4(9)10;/h1-2,5-6H,(H,7,8)(H,9,10);/q;+1/p-1/t1-,2-;/m1./s1

InChI key

KYKNRZGSIGMXFH-ZVGUSBNCSA-M

Application

Potassium L-tartrate monobasic can be used as a reducing agent to synthesize:
  • Gold, palladium, silver and platinum nanoparticles from their salts.
  • Polyvinylpyrrolidone capped platinum (PVP-Pt) nanoparticles from chloroplatinic acid and PVP.



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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

410.0 °F

flash_point_c

210 °C

ppe

Eyeshields, Gloves, type N95 (US)



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