Substance profile
2-Chlorobenzaldehyde
2-Chlorobenzaldehyde is a colorless to yellowish liquid with a penetrating odor.
01 · Identification
What 2-Chlorobenzaldehyde is
2-Chlorobenzaldehyde is a colorless to yellowish liquid with a penetrating odor. Its molecular formula is C7H5ClO and its molecular weight is 140.56 g/mol. It boils at 212 °C, melts at 11.9 °C, is slightly soluble in water.
Under the GHS it carries the signal word Danger.
Other names for 2-Chlorobenzaldehyde
- o-chlorobenzaldehyde
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 |
|---|---|
| H314 | Causes severe skin burns and eye damage. |
03 · Physical and chemical properties
2-Chlorobenzaldehyde 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 |
|---|---|---|---|
| Boiling point | 212 °C (413.6 °F) | HSDB | |
| 211.89 °C (413.4 °F) | at 760 mmHg | CAMEO | |
| 211.9 °C (413.4 °F) | ICSC | ||
| Melting point | 11.9 °C (53.4 °F) | HSDB | |
| 12.39 °C (54.3 °F) | CAMEO | ||
| 12.4 °C (54.3 °F) | ICSC | ||
| Density | 1.25 g/cm³ | ICSC | |
| 1.2483 g/cm³ | at 20 °C | HSDB | |
| 1.248 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Slightly soluble in water | HSDB | |
| Soluble in ethanol, diethyl ether, acetone, benzene, carbon tetrachloride | HSDB | ||
| 1 to 5 mg/mL at 75 °F (NTP, 1992) | at 23.89 °C | CAMEO | |
| Vapor pressure | 0.23 mmHg | at 20 °C | HSDB |
| 0.3 mmHg | at 25 °C | ICSC | |
| 2.2 mmHg | at 50 °C | CAMEO | |
| Flash point | 87 °C (188.6 °F) | HSDB | |
| 87.78 °C (190 °F) | CAMEO | ||
| Autoignition temperature | 395 °C (743 °F) | CAMEO | |
| 385 °C (725 °F) | ICSC | ||
| Vapor density | 4.86 (air = 1) | calculated | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2-Chlorobenzaldehyde
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong bases, strong oxidizing agents, strong reducing agents.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
2-CHLOROBENZALDEHYDE reacts with iron and strong oxidizers, strong bases and strong reducing agents. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-Chlorobenzaldehyde in the storage compatibility matrix →