ChemicalBook Product Catalog Organic Chemistry Organometallic compounds Organopotassium Potassium oxalate monohydrate

Potassium oxalate monohydrate

Product NamePotassium oxalate monohydrate
CAS6487-48-5
MFC2H5KO5
MW148.16
EINECS613-722-1
MOL File6487-48-5.mol

Chemical Properties

Melting point	356 °C
Density	2.127
bulk density	700-1100kg/m3
vapor pressure	<0.1 hPa (20 °C)
RTECS	RO2885000
storage temp.	Store at +5°C to +30°C.
solubility	H₂O: 1 M at 20 °C, clear, colorless
form	Crystals or Flakes
color	White
Specific Gravity	2.127
PH	7.0-8.5 (25℃, 50mg/mL in H2O)
Water Solubility	364 g/L (20 ºC)
Sensitive	Hygroscopic
Merck	14,7651
BRN	3752576
Stability	Stable. Incompatible with strong oxidizing agents. Protect from moisture.
InChI	1S/C2H2O4.2K.H2O/c3-1(4)2(5)6;;;/h(H,3,4)(H,5,6);;;1H2/q;2*+1;/p-2
InChIKey	QCPTVXCMROGZOL-UHFFFAOYSA-L
SMILES	O.[K+].[K+].[O-]C(=O)C([O-])=O
LogP	-1.193 (est)
CAS DataBase Reference	6487-48-5(CAS DataBase Reference)
EPA Substance Registry System	Ethanedioic acid, dipotassium salt, monohydrate (6487-48-5)

Safety Information

Hazard Codes	Xn
Risk Statements	21/22
Safety Statements	24/25
RIDADR	3282
WGK Germany	1
TSCA	Yes
HS Code	2917 11 00
HazardClass	6.1
PackingGroup	III
Storage Class	11 - Combustible Solids
Hazard Classifications	Acute Tox. 4 Dermal Acute Tox. 4 Oral Eye Irrit. 2
Toxicity	LD50 orally in Rabbit: 660 mg/kg

MSDS

Provider	Language
ACROS	English
SigmaAldrich	English
ALFA	English

Usage And Synthesis

Description

Potassium oxalate monohydrate is the monohydrate form of potassium oxalate. It is a strong dicarboxylic acid naturally occurring in many plants and vegetables. It is produced inside the body during the metabolism of glyoxylic acid or ascorbic acid. It is used as a chelating agent, a purifying agent in the pharmaceutical industry as well as a precipitating agent in rare-earth metal processing. In textile and wood industry, it can also used as a grinding agent, a rust remover in metal treatment and a bleaching agent. Moreover, it can be used as a scale remover in automobile radiators and also used in water treatment. In addition, it can be used to determine the calcium content and other heavy metals and reducing agents inn analytic chemistry. It can also be used for the preparation of SBA-15 (nanostructured SiO2) supported catalyst.

Chemical Properties

Potassium oxalate monohydrate is odorless, effiorescent, water-soluble, colorless crystals that decompose when heated. Used in analytical chemistry and photography, and as a bleach and oxalic acid source.

Uses

Potassium oxalate monohydrate may be used in the preparation of SBA-15 (Santa Barbara Amoprhous-15)- catalyst.

General Description

Potassium oxalate monohydrate (POM) is a potassium salt of oxalic acid. Its crystal structure has been investigated by three-dimensional neutron diffraction studies.

Purification Methods

Recrystallise it from hot water. It forms various K + oxalic acid salts [e.g. potassium hydrogen oxalate KH(C2O4)—see above, and KH3(C2O4)2 which is, surprisingly, called potassium tetraoxalate—see below]. [Beilstein 2 H 513, 2 I 224, 2 II, 485, 2 III 1552, 2 IV 1823.]