Benzaldehyde(CAS#100-52-7)
| Hazard Symbols | Xn – Harmful |
| Risk Codes | 22 – Harmful if swallowed |
| Safety Description | 24 – Avoid contact with skin. |
| UN IDs | UN 1990 9/PG 3 |
| WGK Germany | 1 |
| RTECS | CU4375000 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 2912 21 00 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 in rats, guinea pigs (mg/kg): 1300, 1000 orally (Jenner) |
Introduction
Quality:
- Appearance: Benzoaldehyde is a colorless liquid, but common commercial samples are yellow.
- Smell: Has an aromatic aroma.
Method:
Benzoaldehyde can be prepared by oxidation of hydrocarbons. Commonly used preparation methods include the following:
- Oxidation from phenol: In the presence of a catalyst, phenol is oxidized by oxygen in the air to form benzaldehyde.
- Catalytic oxidation from ethylene: In the presence of a catalyst, ethylene is oxidized by oxygen in the air to form benzaldehyde.
Safety Information:
- It has low toxicity and does not cause serious health problems to humans under normal conditions of use.
- It is irritating to the eyes and skin, and protective measures such as gloves and goggles should be taken when touching.
- Prolonged exposure to high concentrations of benzaldehyde vapor may cause irritation to the respiratory tract and lungs, and prolonged inhalation should be avoided.
- When handling benzaldehyde, care should be taken for fire and ventilation conditions to avoid exposure to open flames or high temperatures.
