144-62-7 Oxalic acid

Superiority:

Product Name: Oxalic acid
Synonyms: Ascorbic Acid Impurity 5（Ascorbic Acid EP Impurity E）;OXALIC ACID, ANHYDROUS, 98%OXALIC ACID, ANHYDROUS, 98%OXALIC ACID, ANHYDROUS, 98%OXALIC ACID, ANHYDROUS, 98%;Ribavirin Impurity U;OXALIC ACID 0.1N VOL SOL;Ascorbic Acid EP Impurity E;Ceftriaxone Impurity 12;4-benzyloxyphenylethanol;Acide oxalique
CAS: 144-62-7
MF: C2H2O4
MW: 90.03
EINECS: 205-634-3
Product Categories: Intermediates;Water Ttreatment Chemicals;Eluent concentrates for ICAnalytical Standards;Alphabetic;Chromatography/CE Reagents;Ion Chromatography;O;C1 to C5;Carbonyl Compounds;Carboxylic Acids;Acid SolutionsTitration;Complexometric Solutions (IDRANAL);Complexometric Titration (IDRANAL);Analytical Reagents for General Use;O-P, Puriss p.a.;Puriss p.a.;Acid Concentrates;Concentrates (e.g. FIXANAL);Acid Solutions;Titration;Volumetric Solutions;Pharmaceutical intermediates;Chelating Agents & Ligand;Aliphatics;Impurities;Intermediates & Fine Chemicals;Pharmaceuticals;Bioactive Small Molecules;Building Blocks;C1 to C5;Carbonyl Compounds;Carboxylic Acids;Cell Biology;Chemical Synthesis;Organic Building Blocks
Mol File: 144-62-7.mol

Oxalic acid Chemical Properties
Melting point  189.5 °C (dec.)(lit.)
Boiling point  365.1°C (estimate)
density  0.99 g/mL at 25 °C
vapor density  4.4 (vs air)
vapor pressure  <0.01 mm Hg ( 20 °C)
refractive index  1.4261 (estimate)
Fp  101-157°C
storage temp.  Store below +30°C.
solubility  water: soluble108g/L at 25°C
form  Liquid
pka 1.23(at 25℃)
color  White
PH 1 (100g/l, H2O, 20℃)
PH Range 6 - 8 at 25 °C
Water Solubility  90 g/L (20 ºC)
Sublimation  101-157 ºC
Merck  14,6911
BRN  385686
Henry's Law Constant 1.43 at pH 4 (quoted, Gaffney et al., 1987)
Exposure limits NIOSH REL: TWA 1, STEL 2, IDLH 500; OSHA PEL: TWA 1; ACGIH TLV: TWA 1, STEL 2 (adopted).
Stability: Stable, but moisture sensitive. Incompatible with metals.
InChIKey MUBZPKHOEPUJKR-UHFFFAOYSA-N
CAS DataBase Reference 144-62-7(CAS DataBase Reference)
NIST Chemistry Reference Oxalic acid(144-62-7)
EPA Substance Registry System Oxalic acid (144-62-7)
Safety Information
Hazard Codes  Xn
Risk Statements  21/22-63-34-41
Safety Statements  24/25-23-36/37/39-27-26-39-37-36-36/37
RIDADR  UN 3261 8/PG 3
WGK Germany  1
RTECS  RO2450000
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29171110
Hazardous Substances Data 144-62-7(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 375 mg/kg

Oxalic acid Usage And Synthesis
description Oxalic acid is a strong dicarboxylic acid occurring in many plants and vegetables, usually as its calcium or potassium salts. Oxalic acid is the only possible compound in which two carboxyl groups are joined directly; for this reason oxalic acid is one of the strongest organic acids. Unlike other carboxylic acids (except formic acid), it is readily oxidized; this makes it useful as a reducing agent for photography, bleaching, and ink removal. Oxalic acid is usually prepared by heating sodium formate with sodium hydroxide to form sodium oxalate, which is converted to calcium oxalate and treated with sulfuric acid to obtain free oxalic acid.
concentrations of oxalic acid are pretty low in most plants and plant-based foods, but there’s enough in spinach, chard and beet greens to interfere with the absorption of the calcium these plants also contain.
It is produced in the body by metabolism of glyoxylic acid or ascorbic acid. It is not metabolized but excreted in the urine. It is used as an analytical reagent and general reducing agent.Oxalic acid is a natural acaricide used for treatment against varroa mites in colonies with no/low brood, packages, or swarms. Vaporized oxalic acid is used by some beekeepers as an insecticide against the parasitic Varroa mite.