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Substance Name: Oxalic acid
RN: 144-62-7
UNII: 9E7R5L6H31
InChIKey: MUBZPKHOEPUJKR-UHFFFAOYSA-N

Note

  • A strong dicarboxylic acid occurring in many plants and vegetables. 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.

Molecular Formula

  • C2-H2-O4

Molecular Weight

  • 90.0338
 

Classification Codes

Classification Codes

  • Human Data
  • Indicators and Reagents
  • Reducing Agents
  • Reproductive Effect
  • Skin / Eye Irritant

Superlist Classification Codes

  • TWA 1 mg/m3
  • TWA 1 mg/m3; STEL 2 mg/m3

Names and Synonyms

Name of Substance

  • Oxalic acid

MeSH Heading

  • Oxalic acid

Synonyms

  • 4-02-00-01819 (Beilstein Handbook Reference)
  • Acide oxalique
  • Acide oxalique [French]
  • Acido ossalico
  • Acido ossalico [Italian]
  • Acidum oxalicum
  • AI3-26463
  • Aktisal
  • Aquisal
  • BRN 0385686
  • Caswell No. 625
  • CCRIS 1454
  • EC 205-634-3
  • EINECS 205-634-3
  • EPA Pesticide Chemical Code 009601
  • Ethanedioic acid
  • HSDB 1100
  • Kyselina stavelova
  • Kyselina stavelova [Czech]
  • NCI-C55209
  • NSC 62774
  • Oxaalzuur
  • Oxaalzuur [Dutch]
  • Oxalate
  • Oxalic acid
  • Oxalsaeure
  • Oxalsaeure [German]
  • Oxiric acid
  • UNII-9E7R5L6H31

Systematic Names

  • Ethanedioic acid
  • Oxalic acid

Superlist Names

  • Ethanedioic acid
  • Oxalic acid

Registry Numbers

CAS Registry Number

  • 144-62-7

FDA UNII

  • 9E7R5L6H31

Other Registry Numbers

  • 216451-38-6
  • 63504-28-9
  • 97993-78-7

System Generated Number

  • 0000144627

Structure Descriptors

InChI

InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

InChIKey

MUBZPKHOEPUJKR-UHFFFAOYSA-N

Smiles

OC(=O)C(=O)O

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LDLo subcutaneous 112mg/kg (112mg/kg)   "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1377, 1935.
dog LDLo oral 1gm/kg (1000mg/kg)   "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1377, 1935.
frog LDLo subcutaneous 757mg/kg (757mg/kg)   "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1377, 1935.
mouse LD50 intraperitoneal 270mg/kg (270mg/kg)   Toxicology. Vol. 62, Pg. 203, 1990.
rat LD50 oral 7500mg/kg (7500mg/kg)   Toxicology and Applied Pharmacology. Vol. 42, Pg. 417, 1977.
rat LD50 unreported 1400mg/kg (1400mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 50(3), Pg. 57, 1985.
women LDLo oral 600mg/kg (600mg/kg) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"

GASTROINTESTINAL: CHANGE IN STRUCTURE OR FUNCTION OF ESOPHAGUS

GASTROINTESTINAL: OTHER CHANGES		 Yakkyoku. Pharmacy. Vol. 31, Pg. 959, 1980.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 189.5 dec deg C   EXP
log P (octanol-water) -2.220 (none)   EST
Water Solubility 2.20E+05 mg/L 25 EXP
Vapor Pressure 2.34E-04 mm Hg 25 EXP
Henry's Law Constant 1.43E-10 atm-m3/mole 25 EXP
Atmospheric OH Rate Constant 7.20E-14 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.