4-Hydroxybut-2-ynoic acid
4-Hydroxybut-2-ynoic acid
CAS: 7218-52-2
Molecular Formula: C4H4O3
4-Hydroxybut-2-ynoic acid - Names and Identifiers
| Name | 4-Hydroxybut-2-ynoic acid |
| Synonyms | 4-Hydroxy-2-butynoic acid 4-Hydroxybut-2-ynoic acid 4-HYDROXY-BUT-2-YNOIC ACID 2-Butynoic acid, 4-hydroxy- 2-butynoic acid, 4-hydroxy- |
| CAS | 7218-52-2 |
| InChI | InChI=1/C4H4O3/c5-3-1-2-4(6)7/h5H,3H2,(H,6,7) |
4-Hydroxybut-2-ynoic acid - Physico-chemical Properties
| Molecular Formula | C4H4O3 |
| Molar Mass | 100.07 |
| Density | 1.429±0.06 g/cm3(Predicted) |
| Melting Point | 115-116 °C |
| Boling Point | 319.2±25.0 °C(Predicted) |
| Flash Point | 161°C |
| Solubility | Acetonitrile (Slightly), DMSO (Slightly) |
| Vapor Presure | 2.83E-05mmHg at 25°C |
| Appearance | Solid |
| Color | Pale Beige to Light Beige |
| pKa | 2.09±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.531 |
4-Hydroxybut-2-ynoic acid - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| 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. |
4-Hydroxybut-2-ynoic acid - Introduction
4-Hydroxybut-2-ynoic acid(4-Hydroxybut-2-ynoic acid) is an organic compound with the chemical formula C4H4O3. The following is a detailed description of its nature, use, formulation and safety information:
Nature:
- 4-Hydroxybut-2-ynoic acid is a colorless to pale yellow solid.
-It is soluble in water and organic solvents such as ethanol and ether at room temperature.
-Its molecular structure contains hydroxyl (-OH) and alkynyl (-C≡C-).
Use:
- 4-Hydroxybut-2-ynoic acid can be used in organic synthesis reactions, such as the synthesis of carboxylic acids.
-It can also be used as an intermediate for dyes and fluorescent reagents.
Preparation Method:
- 4-Hydroxybut-2-ynoic acid can be synthesized by ethynylation, that is, butanone is reacted with sodium hydroxide (NaOH) and bromoacetylene (C2H4Br2).
-Its synthesis process needs to be carried out under anhydrous conditions, and the product is properly purified.
Safety Information:
- 4-Hydroxybut-2-ynoic acid is irritating and may cause irritation to the eyes, skin and respiratory tract.
-Avoid inhalation, chewing or contact with skin.
-In case of accidental contact, rinse the affected area immediately with plenty of water and consult a doctor.
-Wear appropriate personal protective equipment, such as laboratory gloves and safety glasses, during use or operation.
When handling this compound, it is recommended to use it in a safe environment and follow relevant laboratory safety procedures.
Nature:
- 4-Hydroxybut-2-ynoic acid is a colorless to pale yellow solid.
-It is soluble in water and organic solvents such as ethanol and ether at room temperature.
-Its molecular structure contains hydroxyl (-OH) and alkynyl (-C≡C-).
Use:
- 4-Hydroxybut-2-ynoic acid can be used in organic synthesis reactions, such as the synthesis of carboxylic acids.
-It can also be used as an intermediate for dyes and fluorescent reagents.
Preparation Method:
- 4-Hydroxybut-2-ynoic acid can be synthesized by ethynylation, that is, butanone is reacted with sodium hydroxide (NaOH) and bromoacetylene (C2H4Br2).
-Its synthesis process needs to be carried out under anhydrous conditions, and the product is properly purified.
Safety Information:
- 4-Hydroxybut-2-ynoic acid is irritating and may cause irritation to the eyes, skin and respiratory tract.
-Avoid inhalation, chewing or contact with skin.
-In case of accidental contact, rinse the affected area immediately with plenty of water and consult a doctor.
-Wear appropriate personal protective equipment, such as laboratory gloves and safety glasses, during use or operation.
When handling this compound, it is recommended to use it in a safe environment and follow relevant laboratory safety procedures.
Last Update：2024-04-10 22:29:15
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CAS: 7218-52-2
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