4-METHYLTHIOPHENE-2-CARBOXYLIC ACID - Names and Identifiers
4-METHYLTHIOPHENE-2-CARBOXYLIC ACID - Physico-chemical Properties
Molecular Formula | C6H6O2S
|
Molar Mass | 142.18 |
Density | 1.319±0.06 g/cm3(Predicted) |
Melting Point | 122-126°C(lit.) |
Boling Point | 158 °C(Press: 16 Torr) |
Flash Point | 121.5°C |
Vapor Presure | 0.0022mmHg at 25°C |
pKa | 3.76±0.10(Predicted) |
Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
Refractive Index | 1.59 |
4-METHYLTHIOPHENE-2-CARBOXYLIC ACID - Risk and Safety
Hazard Symbols | Xi - Irritant
|
Risk Codes | R36 - Irritating to the eyes
R43 - May cause sensitization by skin contact
|
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37/39 - Wear suitable gloves and eye/face protection
|
WGK Germany | 3 |
HS Code | 29349990 |
Hazard Class | IRRITANT |
4-METHYLTHIOPHENE-2-CARBOXYLIC ACID - Introduction
4-Methyl-2-thiophenecarboxylic acid is an organic compound with the chemical formula C7H6OS. The following is a detailed description of its nature, use, preparation and safety information:
Nature:
4-Methyl -2-thiophene carboxylic acid is a colorless to yellow solid with a special thiol odor. It has a melting point of 53-57 degrees Celsius and a boiling point of 170 degrees Celsius. At room temperature, it can be dissolved in many organic solvents, such as ethers, ketones and alcohols.
Use:
4-Methyl-2-thiophenecarboxylic acid is widely used in organic synthesis. It can be used as an intermediate for the synthesis of other organic compounds, such as dyes, pesticides and pharmaceuticals. In addition, it can also be used as an important synthetic raw material for highly efficient glyphosate (a herbicide).
Preparation Method:
4-methyl -2-thiophenecarboxylic acid is generally obtained by reacting and oxidizing 4-methyl -2-thiophenethiol with oxygen. First, mercaptans can be synthesized from hydrogen sulfide and ethylene. Then, the resulting thiol is dissolved in an organic solvent and subjected to an oxidation reaction to finally obtain a product of 4-methyl-2-thiophenecarboxylic acid.
Safety Information:
When using and operating 4-methyl -2-thiophene carboxylic acid, the following safety precautions need to be paid attention:
- 4-methyl -2-thiophene carboxylic acid should be kept away from fire and high temperature.
-During operation, avoid inhaling its dust or vapor, and wear appropriate protective gloves and glasses.
-If you come into contact with skin or eyes, rinse immediately with plenty of water and seek medical help.
-Waste should be disposed of in accordance with local regulations to avoid release into the environment.
Last Update:2024-04-09 21:01:54