4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane

4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane - Names and Identifiers

Name	4,5-dimethyl-1,3,2-dioxathiolane 2-oxide
Synonyms	sym-Dimethylethylene sulfite 4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane 4,5-dimethyl-1,3,2-dioxathiolane 2-oxide 1,3,2-Dioxathiolane, 4,5-dimethyl-, 2-oxide
CAS	4440-90-8
EINECS	224-661-1

4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane - Physico-chemical Properties

Molecular Formula	C4H8O3S
Molar Mass	136.16952

4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane - Risk and Safety

Risk Codes	20/21/22 - Harmful by inhalation, in contact with skin and if swallowed.
Safety Description	S3/9 - S36/37 - Wear suitable protective clothing and gloves.
HS Code	29349990

4,5-Dimethyl-2-oxo-1,3.2-dioxathiolane - Introduction

4,5-dimethyl-1,3,2-dioxathiolane 2-oxide (4,5-dimethyl-1,3,2-dioxathiolane 2-oxide) is an organic compound with the following properties:

1. Appearance: usually colorless liquid.

2. Solubility: Soluble in many organic solvents, such as alcohols, ethers and hydrocarbons.

3. Storage: should be stored in a cool, dry place, away from fire and oxidant.

4. Use: 4,5-dimethyl-1,3,2-dioxathiolane 2-oxide can be used as chemical synthesis of raw materials and reagents, especially in organic synthesis as an oxidant.

5. Preparation method: 4,5-dimethyl-1,3,2-dioxathiolane 2-oxide can be prepared by the following steps:
(1) First, dimethyl ether is reacted with sodium 1,2-ethyl disulfide in a suitable solvent to generate a thioether Intermediate;
(2) The thioether intermediate reacts with peracetic acid or peroxyacetyl chloride to form 4,5-dimethyl-1,3,2-dioxathiolane 2-oxide.

6. Safety Information: 4,5-dimethyl-1,3,2-dioxathiolane 2-oxide should be used with caution. Avoid skin contact and inhalation when touching. In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical help. When using, pay attention to comply with relevant safety procedures and wear appropriate personal protective equipment, such as chemical gloves and protective glasses.

Last Update：2024-04-09 21:01:54