Melting point :-14 °C
Boiling point :104 °C
Density :1.265 g/mL at 25 °C
vapor density :>1 (vs air)
vapor pressure :18 mm Hg ( 20 °C)
refractive index :n20/D 1.409
Flash point :104°C
storage temp. :2-8°C
solubility :water: soluble(lit.)
form :Liquid
color :Clear colorless to yellow
Odor :yel. crystals or lt. yel. liq., mild odor
PH :2-3 (20°C in H2O)
Water Solubility :miscible
Merck :14,4509
BRN :1732463
Henry's Law Constant :4.1×10³ mol/(m³Pa) at 25℃, Burkholder et al. (2019)
Exposure limits :ACGIH: TWA 0.1 mg/m3
Stability :Stability Combustible. Incompatible with strong oxidizing agents. Strong reducing agent. May polyermize exothermically. Incompatible with air, water, oxygen, peroxides, amides, amines, hydroxy-containing materials, nitric acid, aldehydes. Corrodes many metals.
Cosmetics Ingredients Functions :ANTIMICROBIAL
PERFUMING Cosmetic Ingredient Review (CIR) :Glyoxal (107-22-2)
InChI :1S/C2H2O2/c3-1-2-4/h1-2H
InChIKey :LEQAOMBKQFMDFZ-UHFFFAOYSA-N
SMILES :[H]C(=O)C([H])=O
LogP :-1.15 at 20℃
CAS DataBase Reference :107-22-2(CAS DataBase Reference)
NIST Chemistry Reference :Ethanedial(107-22-2)
EPA Substance Registry System :Glyoxal (107-22-2)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501
Precautionary statements:	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.