• USA Home
  • 25508 - Potassium sodium tartrate tetrahydrate

EMAIL THIS PAGE TO A FRIEND
25508 Sigma-Aldrich

Potassium sodium tartrate tetrahydrate

puriss., 99.0-101.0% (calc. on H2O free substance), meets analytical specification of Ph. Eur., BP, USP, FC, E 337

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

  • CAS Number 6381-59-5

  • Linear Formula KOCOCH(OH)CH(OH)COONa · 4H2O

  • Molecular Weight 282.22

  •  Beilstein Registry Number 6113568

  •  EC Number 206-156-8

  •  MDL number MFCD00150989

  •  PubChem Substance ID 57648125

Purchase

Properties

Related Categories Essential Chemicals, Potassium Salts, Research Essentials, Salts
InChI Key   VZOPRCCTKLAGPN-ZFJVMAEJSA-L
grade   puriss.
assay   99.0-101.0% (calc. on H2O free substance)
optical activity   [α]20/D +28.0 to +30.0°
quality   meets analytical specification of Ph. Eur., BP, USP, FC, E 337
impurities   acidity or alkalinity, in accordance
  residual solvent, complies
  ≤0.001% heavy metals (as Pb)
  ≤0.003% total nitrogen (N)
  ≤0.004% ammonium (NH4)
  ≤0.004% free alkali (as NaOH)
  ≤0.0075% free acid (as C4H6O6)
  24-26% water (Karl Fischer)
loss   21-26% loss on drying, 150 °C, 3 h
pH   6.5-8.5 (20 °C, 1%)
anion traces   chloride (Cl-): ≤20 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   As: ≤1 mg/kg
  Ba:, in accordance
  Ca: ≤50 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤2 mg/kg
  Zn: ≤10 mg/kg
suitability   passes test for appearance of solution

Description

Application

Potassium sodium tartrate tetrahydrate has been used in the β-1,3-glucanase activity assay.

General description

Potassium sodium tartrate tetrahydrate (Rochelle salt) exists in the ferroelectric phase in the temperature range of 255 to 297K. In this phase, it crystallizes in the monoclinic system and exhibits space group P21. Saturated aqueous solution of potassium sodium tartrate (Rochelle salt) has been used for the preparation of its tetrahydrate crystals.

Price and Availability


Laboratory Gloves
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles
Peer-Reviewed Papers
15

References

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?