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Merck
CN

60366

Potassium D-tartrate monobasic

BioUltra, ≥99.0% (T)

Synonym(s):

D-(−)-Tartaric acid monopotassium salt, D-2,3-Dihydroxybutanedioic acid monopotassium salt, Potassium hydrogen D-tartrate

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About This Item

Empirical Formula (Hill Notation):
C4H5KO6
CAS Number:
Molecular Weight:
188.18
PubChem Substance ID:
UNSPSC Code:
12352000
Beilstein/REAXYS Number:
6119984
MDL number:
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product line

BioUltra

assay

≥99.0% (T)

optical activity

[α]20/D −31.5±0.5°, c = 10% in 1 M NaOH

impurities

insoluble matter, passes filter test

pH

3.0-4.5 (25 °C, 0.01 M in H2O)

solubility

H2O: 0.01 M at 20 °C, clear, colorless

anion traces

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

cation traces

Al: ≤10 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤10 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤10 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

λ

0.01 M in H2O

UV absorption

λ: 260 nm Amax: 0.015, λ: 280 nm Amax: 0.013

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-;/m0./s1

InChI key

KYKNRZGSIGMXFH-YGEZSCCGSA-M

Other Notes

Primary standard buffer
Unnatural isomer


Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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R.M.C. Dawson, et al.
Data for Biochemical Research, 421-421 (1986)