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.
02 · Identifiers
Glyoxylic Acid identifiers and molecular data
Glyoxylic Acid CAS number and EC number
Glyoxylic Acid molecular formula and molecular weight
Other names for Glyoxylic Acid
- glyoxylic acid ...%
03 · GHS classification
Glyoxylic Acid hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Glyoxylic Acid pictograms and signal word
Glyoxylic Acid hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 1 | H318 | GHS05 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Glyoxylic Acid hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H318 | Causes serious eye damage. |
| H317 | May cause an allergic skin reaction. |
This page lists only the codes assigned to Glyoxylic Acid. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Glyoxylic Acid
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Glyoxylic Acid issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Glyoxylic Acid precautionary statements
CLP Annex VI assigns 8 precautionary statements to Glyoxylic Acid. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Glyoxylic Acid name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | глиоксилова киселина ...% |
| Spanish español | Ácido glioxílico ...% |
| Czech čeština | glyoxylová kyselina …% |
| Danish dansk | glyoxylsyre …% |
| German Deutsch | Glyoxylsäure … % |
| Estonian eesti | Glüoksüülhape kontsentratsiooniga ... % |
| Greek ελληνικά | γλυοξαλικό οξύ …% |
| English English | glyoxylic acid …% |
| French français | acide glyoxylique ... % |
| Croatian hrvatski | glioksilna kiselina ...% |
| Italian italiano | acido gliossilico … % |
| Latvian latviešu | glioksālskābe, … % |
| Lithuanian lietuvių | glioksilo rūgštis …% |
| Hungarian magyar | … %-os glioxilsav |
| Maltese Malti | aċidu gliossiliku ...% |
| Dutch Nederlands | glyoxylzuur … % |
| Polish polski | kwas glioksalowy ...% |
| Portuguese português | ácido glioxílico a ... % |
| Romanian română | acid glioxilic … % |
| Slovak slovenčina | kyselina 2-oxoetánová ...% |
| Slovenian slovenščina | glioksilna kislina ... % |
| Finnish suomi | glyoksyylihappo, …% |
| Swedish svenska | glyoxylsyra …% |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Glyoxylic Acid GHS label elements
Everything CLP Annex VI fixes for Glyoxylic Acid, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Glyoxylic Acid
- Causes serious eye damage.
- May cause an allergic skin reaction.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Contaminated work clothing should not be allowed out of the workplace.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF IN EYES:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention.
- If skin irritation or rash occurs:
- Remove contact lenses, if present and easy to do. Continue rinsing.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Glyoxylic Acid in the GHS label constructor →
07 · Health hazards
Glyoxylic Acid health hazards and exposure limits
Glyoxylic Acid hazard summary
Corrosive acid; [Merck Index] Emergency treatment: see Oxalic acid. A skin, eye, and mucous membrane irritant; [HSDB] May cause irritation or burns to skin and eyes; [CAMEO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · 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.
Glyoxylic Acid melting point
| 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 |
Glyoxylic Acid density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.342 g/cm³ | CAMEO | |
| 1.42 g/cm³ | at 20 °C | HSDB |
Glyoxylic Acid solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Very soluble in water; slightly soluble in ethanol, ethyl ether, and benzene | HSDB |
Glyoxylic Acid vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.06 mmHg | Haz-Map |
Glyoxylic Acid corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Glyoxylic Acid storage 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 →
10 · Questions
Glyoxylic Acid — frequently asked questions
What is the CAS number of Glyoxylic Acid?
The CAS number of Glyoxylic Acid is 298-12-4. Its EC number is 206-058-5.
What is the chemical formula of Glyoxylic Acid?
The molecular formula of Glyoxylic Acid is C2H2O3 and its molecular weight is 74.04 g/mol.
What does a Glyoxylic Acid label have to show?
Under CLP Annex VI the label for Glyoxylic Acid carries the pictograms Corrosion and Exclamation mark and the signal word is Danger.
Is Glyoxylic Acid flammable?
CLP Annex VI assigns Glyoxylic Acid no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Glyoxylic Acid a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Glyoxylic Acid. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of Glyoxylic Acid?
The melting point reported for Glyoxylic Acid is 98 °C (208.4 °F) (HSDB).
Nearby
Substances next to Glyoxylic Acid
Keep going: substances starting with G, or search the whole database by name, CAS number, pictogram or signal word.