- Formylformic acid
- alpha-Ketoacetic acid
- Oxoacetic acid
- Oxalaldehydic acid
- Oxoethanoic acid
Supplied as a 50% aqueous solution. Colorless to straw yellow.
Intermediate for flavorings, perfumes, pharmaceuticals, dyes, plastics, agricultural chemicals.
Registry Numbers and Inventories.
R 34 41
S 26 36/37/39 45
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
97 - 98
Boiling point, °C
Vapor pressure, mmHg
0.033 (25 C)
Vapor density (air=1)
1.342 g/cm3 (20 C)
Solubility in water
1.41 (20 C)
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Neutralizing Agents for Acids and Caustics: Lime.
Forms a syrup on short exposure to air hemihydrate.
Reacts in this way with all bases, both organic (for example, the amines) and inorganic Can react with active metals to form gaseous hydrogen and a metal salt Flammable and/or toxic gases and heat are generated by the reaction with with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides.
Fire Extinguishing Agents Not to Be Used: Avoid direct contact between water and acid.Fire Extinguishing Agents: Dry chemical, carbon dioxide or water spray.
Combustible material: may burn but does not ignite readily.
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Fire may produce irritating, corrosive and/or toxic gases.
Increased deep tendon reflexes, drowsiness, stupor, seizures and coma may be noted.
Persistent vomiting, hematemesis and hemorrhagic gastritis due to the corrosive action of oxalic acid on the mucous membranes may occur immediately following ingestion.
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
Dermal exposure may result in corrosive action on the skin. Skin lesions begin with epithelial cracking and the formation of slow-healing ulcers.
Seek medical assistance.
Remove to fresh air. If breathing is difficult, give oxygen.
Remove contaminated clothing and shoes. Flush with water.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.