123-81-9
Glycol dimercaptoacetate
CAS: 123-81-9
Molecular Formula: C6H10O4S2
123-81-9 - Names and Identifiers
| Name | Glycol dimercaptoacetate |
| Synonyms | GDMA Glycol dimercaptoacetate ethylene di(S-thioacetate) Ethylene glycol bisthioglycolate Ethylene glycol dimercaptoacetate ethane-1,2-diyl bis(sulfanylacetate) S,S'-ethane-1,2-diyl diethanethioate |
| CAS | 123-81-9 |
| EINECS | 204-653-4 |
| InChI | InChI=1/C6H10O2S2/c1-5(7)9-3-4-10-6(2)8/h3-4H2,1-2H3 |
123-81-9 - Physico-chemical Properties
| Molecular Formula | C6H10O4S2 |
| Molar Mass | 210.263 |
| Density | 1.19g/cm3 |
| Boling Point | 248°C at 760 mmHg |
| Flash Point | 99.2°C |
| Water Solubility | 20 g/L (20℃) |
| Vapor Presure | 0.0248mmHg at 25°C |
| pKa | 7.51±0.10(Predicted) |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.525 |
| Use | For Organic synthesis |
123-81-9 - Risk and Safety
| Hazard Symbols | Xn - Harmful N - Dangerous for the environment  |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/38 - Irritating to eyes and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S29 - Do not empty into drains. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S57 - Use appropriate container to avoid environmental contamination. |
| UN IDs | 2810 |
| WGK Germany | 2 |
| RTECS | AI6600000 |
| HS Code | 29309070 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 330 mg/kg |
123-81-9 - Upstream Downstream Industry
| Raw Materials | Mercaptoacetic acid Ethylene glycol |
| Downstream Products | 2-hydroxyethyl mercaptoacetate |
123-81-9 - Introduction
Ethylene glycol dithioglycolate, also known as glycol mercapto ester, is an organic compound. The following is a description of its nature, use, preparation and safety information:
Nature:
-Physical properties: Ethylene glycol dithioglycolate is a colorless to yellowish liquid with a special sulfuric acid smell.
-Chemical properties: It has good solubility, soluble in organic solvents such as alcohols and ethers, but insoluble in water.
Use:
-Chemical synthesis: Ethylene glycol dithioglycolate is commonly used as a functional protecting group in organic synthesis, which can protect hydroxyl functional groups to avoid unwanted reactions, and can also be used to adjust the solution properties of compounds.
-Pharmaceutical field: Glycols are widely used in pharmaceutical preparations and can be used as stabilizers, solubilizers and antireflection agents for drugs.
Preparation Method:
Ethylene glycol dithioglycolate is usually prepared by reacting ethylene mercaptoformate with mercaptoethanol under the catalysis of hydrochloric acid. This reaction needs to be carried out under an inert atmosphere and requires careful handling due to the irritating and volatile nature of the glycol mercapto esters.
Safety Information:
-Glycols are volatile and irritating to the skin and eyes, so you should wear appropriate protective measures during operation, such as wearing chemical safety gloves and goggles.
-In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical help.
-Ethylene glycol mercaptoester should be stored in a sealed container, away from fire and high temperature to avoid fire or explosion hazards.
-When using mercaptoglycol esters, follow proper laboratory practices and operating procedures to ensure safe use.
Nature:
-Physical properties: Ethylene glycol dithioglycolate is a colorless to yellowish liquid with a special sulfuric acid smell.
-Chemical properties: It has good solubility, soluble in organic solvents such as alcohols and ethers, but insoluble in water.
Use:
-Chemical synthesis: Ethylene glycol dithioglycolate is commonly used as a functional protecting group in organic synthesis, which can protect hydroxyl functional groups to avoid unwanted reactions, and can also be used to adjust the solution properties of compounds.
-Pharmaceutical field: Glycols are widely used in pharmaceutical preparations and can be used as stabilizers, solubilizers and antireflection agents for drugs.
Preparation Method:
Ethylene glycol dithioglycolate is usually prepared by reacting ethylene mercaptoformate with mercaptoethanol under the catalysis of hydrochloric acid. This reaction needs to be carried out under an inert atmosphere and requires careful handling due to the irritating and volatile nature of the glycol mercapto esters.
Safety Information:
-Glycols are volatile and irritating to the skin and eyes, so you should wear appropriate protective measures during operation, such as wearing chemical safety gloves and goggles.
-In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical help.
-Ethylene glycol mercaptoester should be stored in a sealed container, away from fire and high temperature to avoid fire or explosion hazards.
-When using mercaptoglycol esters, follow proper laboratory practices and operating procedures to ensure safe use.
Last Update：2024-04-09 20:49:11
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Raw Materials for 123-81-9
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