5963-77-9
2-PENTYNOIC ACID
CAS: 5963-77-9
Molecular Formula: C5H6O2
5963-77-9 - Names and Identifiers
| Name | 2-PENTYNOIC ACID |
| Synonyms | Nsc289567 2-PENTYNOIC ACID Pent-2-ynoic acid ethylacetylene carboxylic acid |
| CAS | 5963-77-9 |
5963-77-9 - Physico-chemical Properties
| Molecular Formula | C5H6O2 |
| Molar Mass | 98.1 |
| Density | 1.1133 (rough estimate) |
| Melting Point | 47-53 °C |
| Boling Point | 125°C 30mm |
| Flash Point | 96 °C |
| pKa | 2.70±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.4619 |
5963-77-9 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R34 - Causes burns R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed |
| 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. S36 - Wear suitable protective clothing. |
| UN IDs | 3261 |
| WGK Germany | 1 |
| HS Code | 29161900 |
5963-77-9 - Upstream Downstream Industry
| Downstream Products | METHYL 2-PENTYNOATE ETHYL 2-PENTYNOATE |
5963-77-9 - Introduction
2-PENTYNOIC ACID, chemical formula C5H6O2, also known as 2-PENTYNOIC ACID or 2-PENTYNOIC ACID, is an organic compound.
Nature:
-Appearance: 2-PENTYNOIC ACID is a colorless liquid.
-Odor: It has a pungent odor.
-Solubility: 2-PENTYNOIC ACID is soluble in water and common organic solvents, such as ethanol and ethers.
-Chemical properties: It is a weak acid that can be given to other substances by hydrogen ions (H).
Use:
-Chemical synthesis: 2-PENTYNOIC ACID can be used as a raw material in organic synthesis for the synthesis of other organic compounds, such as ketones and esters.
-Electroplating: It can be used as an additive in the metal electroplating process to provide a better electroplating effect.
-Dye intermediate: 2-PENTYNOIC ACID can also be used as an intermediate in the preparation of certain dyes.
Method:
The preparation of 2-PENTYNOIC ACID can be carried out by the following steps:
1. 2-Chloropentane is reacted with hydrochloric acid in the presence of an organic solvent to obtain 2-chloropentane, a chloroalkyl compound.
2. 2-chloropentane reacts with sodium acetylene under alkaline conditions to generate 2-PENTYNOIC ACID.
Safety Information:
- 2-PENTYNOIC ACID is irritating and can cause irritation to the skin, eyes and mucous membranes when exposed. Therefore, you should pay attention to personal protective measures, such as wearing gloves and goggles.
-If accidentally inhaled or ingested, wash your mouth immediately and seek medical help.
-Store away from oxidants and fire sources, and avoid contact with combustibles. It is recommended to store in a cool, dry, well-ventilated place, away from direct sunlight.
-Please refer to the relevant safety guidelines and operating procedures during handling to ensure safe use.
Nature:
-Appearance: 2-PENTYNOIC ACID is a colorless liquid.
-Odor: It has a pungent odor.
-Solubility: 2-PENTYNOIC ACID is soluble in water and common organic solvents, such as ethanol and ethers.
-Chemical properties: It is a weak acid that can be given to other substances by hydrogen ions (H).
Use:
-Chemical synthesis: 2-PENTYNOIC ACID can be used as a raw material in organic synthesis for the synthesis of other organic compounds, such as ketones and esters.
-Electroplating: It can be used as an additive in the metal electroplating process to provide a better electroplating effect.
-Dye intermediate: 2-PENTYNOIC ACID can also be used as an intermediate in the preparation of certain dyes.
Method:
The preparation of 2-PENTYNOIC ACID can be carried out by the following steps:
1. 2-Chloropentane is reacted with hydrochloric acid in the presence of an organic solvent to obtain 2-chloropentane, a chloroalkyl compound.
2. 2-chloropentane reacts with sodium acetylene under alkaline conditions to generate 2-PENTYNOIC ACID.
Safety Information:
- 2-PENTYNOIC ACID is irritating and can cause irritation to the skin, eyes and mucous membranes when exposed. Therefore, you should pay attention to personal protective measures, such as wearing gloves and goggles.
-If accidentally inhaled or ingested, wash your mouth immediately and seek medical help.
-Store away from oxidants and fire sources, and avoid contact with combustibles. It is recommended to store in a cool, dry, well-ventilated place, away from direct sunlight.
-Please refer to the relevant safety guidelines and operating procedures during handling to ensure safe use.
Last Update：2024-04-10 22:29:15
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CAS: 5963-77-9
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