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CAS No 298-12-4 , oxaldehydic acid

  • Name: oxaldehydic acid
  • Synonyms: Oxalaldehydic acid; Glyoxalic acid; Acetic acid;oxaldehydic acid; 298-12-4; Formylformic acid;Oxoacetic acid; glyoxylate; oxo-; Oxoethanoic acid;
  • CAS Registry Number:
  • Transport: UN 3265 8/PG 2
  • Melting Point: -93 ºC
  • Flash Point: 103.9 ºC
  • Boiling Point: 111 ºC
  • Density: 1.3
  • Refractive index: 1.414-1.418
  • Water Solubility: MISCIBLE
  • Safety Statements: R41;R43
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: 103.9 ºC
  • EINECS: 206-058-5
  • Molecular Weight: 74.03548
  • InchiKey: HHLFWLYXYJOTON-UHFFFAOYSA-N
  • InChI: InChI=1S/C2H2O3/c3-1-2(4)5/h1H,(H,4,5)
  • Risk Statements: S24;S26;S37/39
  • Molecular Formula: C2H2O3
  • Molecular Structure:CAS No:298-12-4 oxaldehydic acid

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298-12-4 Glyoxalic Acid

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298-12-4 Glyoxylic acid

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298-12-4 Glyoxylic acid

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298-12-4 Glyoxylic acid

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298-12-4 GLYOXYLIC ACID MONOHYDRATE FREE ACID

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References of oxaldehydic acid
Title: Glyoxylic Acid
CAS Registry Number: 298-12-4
CAS Name: Oxoacetic acid
Synonyms: formylformic acid; glyoxalic acid; oxoethanoic acid
Molecular Formula: C2H2O3
Molecular Weight: 74.04
Percent Composition: C 32.44%, H 2.72%, O 64.83%
Line Formula: OHCCOOH
Literature References: Occurs in unripe fruit and in young green leaves; has also been found in very young sugar beets. Prepd by heating dibromoacetic acid with some water: Grimaux, Bull. Soc. Chim. [2] 26, 483; Cramer, Ber. 25, 714 (1892); by electrolytic reduction of oxalic acid: Meyer, Ber. 37, 3592 (1904); by the action of Aspergillus niger on calcium acetate, malonic or citric acid: Challenger et al., J. Chem. Soc. 1927, 205, 207. Prepn of glyoxylic acid soln for analytical use: Beilstein vol. III, 594.
 
Derivative Type: Hemihydrate
Properties: Crystals from water, mp 70-75°. Also obtained in anhydr form as monoclinic crystals from water, mp 98°. Obnoxious odor. Strong, corrosive acid. K = 4.6 ′ 10-4. Deliquesces rapidly and forms a syrup on short exposure to air. Sparingly sol in alc, ether, benzene. Freely sol in water; aq solns tend to acquire a yellowish tint. Attacks most base metals except certain stainless steel alloys.
Melting point: mp 70-75°; mp 98°
 
Derivative Type: Monohydrate
Properties: Crystals, mp ~50°. Highly hygroscopic.
Melting point: mp ~50°
 
CAUTION: Irritant, corrosive.