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CAS No 107-22-2 , oxaldehyde

  • Name: oxaldehyde
  • Synonyms: 1,2-Ethanedione;oxaldehyde; Glyoxylaldehyde; Biformyl; Biformal;Ethanedial; 107-22-2; Diformal; Diformyl; Oxalaldehyde;
  • CAS Registry Number:
  • Transport: UN 1760
  • Melting Point: -14 ºC
  • Boiling Point: 104 ºC
  • Density: 1.265
  • Refractive index: n20/D 1.409
  • Water Solubility: MISCIBLE
  • Safety Statements: R20;R36/38;R43;R68
  • Hazard Symbols: Xn: Harmful;
  • EINECS: 203-474-9
  • Molecular Weight: 58.03608
  • InchiKey: LEQAOMBKQFMDFZ-UHFFFAOYSA-N
  • InChI: InChI=1S/C2H2O2/c3-1-2-4/h1-2H
  • Risk Statements: S36/37
  • Molecular Formula: C2H2O2
  • Molecular Structure:CAS No:107-22-2 oxaldehyde

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References of oxaldehyde
Title: Glyoxal
CAS Registry Number: 107-22-2
CAS Name: Ethanedial
Synonyms: biformyl; diformyl; oxalaldehyde
Molecular Formula: C2H2O2
Molecular Weight: 58.04
Percent Composition: C 41.39%, H 3.47%, O 55.13%
Line Formula: OHCCHO
Literature References: Prepd by the oxidation of acetaldehyde by nitric or selenious acid: Lubawin, Ber. 8, 768 (1875); Wyss, Ber. 10, 1366 (1877); K?lln, Ann. 416, 230 (1918); Riley et al., J. Chem. Soc. 1932, 1881; Ronzio, Waugh, Org. Synth. coll. vol. III, 438 (1955); by hydrolysis of dichlorodioxane: Butler, Cretcher, J. Am. Chem. Soc. 54, 2988 (1932). Review of commercial development: J. F. Bohmfalk et al., Ind. Eng. Chem. 43, 786 (1951). Toxicity study: H. F. Smyth et al., J. Ind. Hyg. Toxicol. 23, 259 (1941). Review: A. B. Boese et al. in Glycols, G. O. Curme, F. Johnston, Eds. (Reinhold, New York, 1952) pp 125-128.
Properties: Yellow prisms or irregular pieces turning white on cooling. d20 1.14. Opaque at 10°, mp 15°. bp776 51°. The vapors are green and burn with a purple flame. Explosive: Mixtures with air may explode! nD20.5 1.3826. Sol in anhydr solvents. pH of a 40% aq soln: 2.1-2.7; d420 1.27. Polymerizes quickly on standing, on contact with water (violent reaction), or when dissolved in solvents contg water. The anhydr polymer changes to the monomer on heating. Solns of the monomer are obtained on heating the polymer with anethole, phenetole, safrole, methyl nonyl ketone, or benzaldehyde. LD50 in rats, guinea pigs (mg/kg): 2020, 760 orally (Smyth).
Melting point: mp 15°
Boiling point: bp776 51°
Index of refraction: nD20.5 1.3826
Density: d20 1.14; d420 1.27
Toxicity data: LD50 in rats, guinea pigs (mg/kg): 2020, 760 orally (Smyth)
 
Derivative Type: Dihydrate
Molecular Formula: (OHCCHO)3.2H2O
Molecular Weight: 210.14
Percent Composition: O 60.91%, H 4.80%, C 34.29%
Properties: Crystalline powder, nonhygroscopic. More sol in hot water than in cold water. Commercially available in anhydr form as crystalline dihydrate, or as a 40% aq soln which may contain polymerization inhibitors.
 
CAUTION: Moderately irritating to skin, mucous membranes.
Use: In textiles, organic synthesis, glues, biocides.