3-Eethynylbenzoic acid - Names and Identifiers
3-Eethynylbenzoic acid - Physico-chemical Properties
Molecular Formula | C9H6O2
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Molar Mass | 146.14 |
Density | 1.23±0.1 g/cm3(Predicted) |
Melting Point | 164-171°C |
Boling Point | 300.2±25.0 °C(Predicted) |
pKa | 3.99±0.10(Predicted) |
Storage Condition | 2-8°C |
3-Eethynylbenzoic acid - Risk and Safety
Hazard Symbols | Xn - Harmful
|
Risk Codes | R22 - Harmful if swallowed
R36 - Irritating to the eyes
R43 - May cause sensitization by skin contact
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Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
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WGK Germany | nwg |
3-Eethynylbenzoic acid - Introduction
3-Ethynylbenzoic acid is an organic compound with the chemical formula C9H6O2. The following is a description of its nature, use, formulation and safety information:
Nature:
-Appearance: 3-Ethynylbenzoic acid is a colorless to pale yellow crystalline solid.
-Melting point: about 143-144°C.
-Boiling point: about 317°C.
-Low solubility in water, soluble in organic solvents such as ethanol, ether and chloroform.
-Stable in the air, but may decompose in high temperature and sunlight.
Use:
- 3-Ethynylbenzoic acid can be used as an important intermediate in organic synthesis.
-It can be used to produce various compounds, such as fragrances, medicines and dyes.
-In chemical research, it is also commonly used to synthesize other organic compounds.
Preparation Method:
-The preparation method of 3-Ethynylbenzoic acid can be carried out by the following steps:
1. benzoic acid is reacted with trichloroacetic anhydride to generate an anhydride derivative of benzoic acid.
2. The anhydride derivative is reacted with acetylene to obtain 3-Ethynylbenzoic acid.
Safety Information:
- 3-Ethynylbenzoic acid is generally stable and safe under normal use and storage conditions.
-However, it may be irritating to the eyes, skin and respiratory tract, so follow appropriate safety measures such as wearing protective glasses, gloves and breathing apparatus.
-Avoid inhaling its dust or contact with skin during use.
-When storing, it should be stored in a dry, ventilated and dark place, away from fire and oxidizing agents.
Last Update:2024-04-09 20:49:11