Substance profile
Glyoxylic Acid
Glyoxylic Acid is monoclinic crystals from water with an obnoxious odor.
01 · Identification
What Glyoxylic Acid is
Glyoxylic Acid is monoclinic crystals from water with an obnoxious odor. Its molecular formula is C2H2O3 and its molecular weight is 74.04 g/mol. It melts at 98 °C.
Under the GHS it carries the signal word Danger.
Other names for Glyoxylic Acid
- glyoxylic acid ...%
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H318 | Causes serious eye damage. |
| H317 | May cause an allergic skin reaction. |
Precautionary statements: P261, P272, P280, P305, P310, P313, P333, P338
03 · Physical and chemical properties
Glyoxylic Acid properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 98 °C (208.4 °F) | HSDB | |
| 72.5 °C (162.5 °F) | range, midpoint shown | HSDB | |
| 50 °C (122 °F) | approximate | HSDB | |
| Density | 1.342 g/cm³ | CAMEO | |
| 1.42 g/cm³ | at 20 °C | HSDB | |
| Solubility | Very soluble in water; slightly soluble in ethanol, ethyl ether, and benzene | HSDB | |
| Vapor pressure | 1.06 mmHg | Haz-Map | |
| Corrosivity | Corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Glyoxylic Acid
Incompatible materials
Deliquesces quickly and forms a syrup on short exposure to air.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Glyoxylic Acid in the storage compatibility matrix →