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107-22-2

107-22-2 structural image
Product Name: Glyoxal
Formula: C2H2O2
Synonyms: Ethanedial;Oxalaldehyde
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Glyoxal appears as yellow crystals melting at15 °C. Hence often encountered as a light yellow liquid with a weak sour odor. Vapor has a green color and burns with a violet flame.
Color/Form Yellow prisms or irregular pieces turning white on cooling; opaque at 10 °C; vapors are green
Odor Mild odor
Boiling Point 124 °F at 776 mmHg (NTP, 1992)
Melting Point 59 °F (NTP, 1992)
Flash Point 428 °F (NTP, 1992)
Solubility greater than or equal to 100 mg/mL at 72 °F (NTP, 1992)
Density 1.29 at 68 °F (liquid,40% solution) (USCG, 1999) - Denser than water; will sink
Vapor Density greater than 1.0 (NTP, 1992) (Relative to Air)
Vapor Pressure 18 mmHg at 68 °F (NTP, 1992)
LogP -0.85
Henry's Law Constant Henry's Law constant = 3.33X10-9 atm-cu-m/mol at 25 °C
Autoignition Temperature 545 °F (NTP, 1992)
Decomposition When heated to decomposition it emits acrid smoke and irritating fumes.
pH pH of 40% aqueous solution = 2.1 to 2.7
Polymerization Polymerizes...on contact with water (violent reaction), or when dissolved in solvents containing water.
Refractive Index Index of refraction = 1.3826 at 20 °C
Other Experimental Properties 10.0 lb/gallon at 20 °C; burns with violet flame; aqueous solution contains monomolecular glyoxal and reacts weakly with acid; glyoxal VP resists discoloration; undergoes many addition & condensation reactions with amines, amides, aldehydes & hydroxyl-containing materials.
Chemical Classes Other Classes -> Aldehydes

SAFETY INFORMATION

Signal word Warning
Pictogram(s)

Exclamation Mark
Irritant
GHS07

Health Hazard
GHS08
GHS Hazard Statements H315:Skin corrosion/irritation
H317:Sensitisation, Skin
H319:Serious eye damage/eye irritation
H332:Acute toxicity,inhalation
H341:Germ cell mutagenicity
Precautionary Statement Codes P201:Obtain special instructions before use.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313:IF exposed or concerned: Get medical advice/attention.

COMPUTED DESCRIPTORS

Molecular Weight 58.04 g/mol
XLogP3 -0.4
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 2
Rotatable Bond Count 1
Exact Mass 58.005479302 g/mol
Monoisotopic Mass 58.005479302 g/mol
Topological Polar Surface Area 34.1 Ų
Heavy Atom Count 4
Formal Charge 0
Complexity 25
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Glyoxal appears as yellow crystals melting at15 °C. Hence often encountered as a light yellow liquid with a weak sour odor. Vapor has a green color and burns with a violet flame.

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