78-98-8
Product Name:
Methylglyoxal
Formula:
C3H4O2
Synonyms:
Acetylformaldehyde;Methylglyoxal solution;Pyruvaldehyde;Pyruvic aldehyde
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Methylglyoxal is a clear yellow slightly viscous liquid with a pungent odor. Yellowish-green vapors. Faintly acidic to litmus. (NTP, 1992) |
|---|---|
| Color/Form | Clear, yellow liquid |
| Odor | Pungent |
| Boiling Point | 162 °F at 760 mmHg (NTP, 1992) |
| Melting Point | < 25 °C |
| Solubility | greater than or equal to 100 mg/mL at 63 °F (NTP, 1992) |
| Density | 1.06 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Vapor Pressure | 26.7 [mmHg] |
| Henry's Law Constant | Henry's Law constant = 2.70X10-7 atm-cu m/mol at 25 °C |
| Decomposition | When heated to decomposition it emits acrid smoke and irritating fumes. |
| Refractive Index | Index of refraction: 1.4002 at 17.5 °C/D |
| Kovats Retention Index | 970 970 |
| Other Experimental Properties | Hygroscopic. Polymerizes very readily, forming a brittle, resinous mass. |
| Chemical Classes | Other Classes -> Aldehydes |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H290:Corrosive to Metals H317:Sensitisation, Skin H318:Serious eye damage/eye irritation H341:Germ cell mutagenicity |
| Precautionary Statement Codes |
P202:Do not handle until all safety precautions have been read and understood. P234:Keep only in original container. 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. |
COMPUTED DESCRIPTORS
| Molecular Weight | 72.06 g/mol |
|---|---|
| XLogP3 | -0.4 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 1 |
| Exact Mass | 72.021129366 g/mol |
| Monoisotopic Mass | 72.021129366 g/mol |
| Topological Polar Surface Area | 34.1 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 55.9 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Methylglyoxal is a clear yellow slightly viscous liquid with a pungent odor. Yellowish-green vapors. Faintly acidic to litmus. (NTP, 1992)