Glyoxylic acid

The Molecular Structure of Glyoxylic acid (CAS NO.298-12-4):

Empirical Formula: C₂H₂O₃
Molecular Weight: 74.0355 
IUPAC Name: oxaldehydic acid  
Appearance: clear yellow solution
Nominal Mass: 74 Da
Average Mass: 74.0355 Da
Monoisotopic Mass: 74.000394 Da 
Index of Refraction: 1.403
Molar Refractivity: 13.06 cm³
Molar Volume: 53.4 cm³
Surface Tension: 50.2 dyne/cm
Density: 1.384 g/cm³
Flash Point: 103.9 °C
Enthalpy of Vaporization: 50.8 kJ/mol
Boiling Point: 224.6 °C at 760 mmHg
Vapour Pressure: 0.0331 mmHg at 25°C 
Storage temp: 2-8°C
Water Solubility: miscible
InChI
InChI=1/C2H2O3/c3-1-2(4)5/h1H,(H,4,5) 
Smiles
C(C=O)(O)=O 
Product Categories: Pharmaceutical Intermediates
Synonyms: Formylformic Acid ; Oxoethanoic acid ; Oxoacetic acid ; Formylformic acid ; Alpha-Ketoacetic Acid ; Oxalaldehydic Acid  
The conjugate base of Glyoxylic acid (CAS NO.298-12-4) is known as glyoxylate. It  is an intermediate of the glyoxylate cycle, enables organisms, such as fungi, bacteria, and plants to convert fatty acids into carbohydrates .

 Glyoxylic acid (CAS NO.298-12-4) is used as intermediates of spice, medicine, dyes, plastics and varnish materials,and it also used in pharmacy.

Reported in EPA TSCA Inventory

Hazard Codes: CXi
Risk Statements: 34-43-41 
R34: Causes burns
R43: May cause sensitization by skin contact
R41: Risk of serious damage to the eyes
Safety Statements: 26-36/37/39-45-37/39-24 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S37/39: Wear suitable gloves and eye/face protection
S24: Avoid contact with skin
RIDADR: UN 3265 8/PG 2
WGK Germany: 1
RTECS: MD4550000
HazardClass: 8
PackingGroup: III
Poison by intramuscular route. Mutation data reported. A skin, eye, and mucous membrane irritant. When heated to decomposition it emits acrid smoke and fumes.