99591-74-9

Basic information

• Product Name: 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide
• Synonyms: 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide;1,5,2,4-Dioxadithian;Methylene Methanedisulfonate;1,5,2,4-dioxadithiane-2,2,4,4-tetraoxide (MMDS)
• CAS NO: 99591-74-9
• Molecular Formula: C₂H₄O₆S₂
• Molecular Weight: 188.17956
• Mol File: 99591-74-9.mol
• Article Data: 12

Chemical Properties

• Boiling Point: 624.245 °C at 760 mmHg
• Flash Point: 331.332 °C
• Appearance: /
• Density: 1.850
• Vapor Pressure: 0.002-0.004Pa at 20-25℃
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• CAS DataBase Reference: 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide(CAS DataBase Reference)
• NIST Chemistry Reference: 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide(99591-74-9)
• EPA Substance Registry System: 1,5,2,4-Dioxadithiane 2,2,4,4-tetraoxide(99591-74-9)

Safety Data

• Hazardous Substances Data: 99591-74-9(Hazardous Substances Data)

Usage

Chemical Properties

White crystalline solid

Upstream product

• 75-09-2 dichloromethane 
• 503-40-2 methanedisulfonic acid 
• 5799-68-8 methanedisulfonyl chloride 
• 109-87-5 Dimethoxymethane 
• 92975-18-3 [(chlorosulfonyl)oxy]methyl sulfurochloridate 
• 50-00-0 formaldehyd 
• 75-75-2 methanesulfonic acid 
• 6291-65-2 methanedisulfonic acid dipotassium salt 
• 75-11-6 diiodomethane 
• 71608-87-2 disilver methanedisulfonate 

Relevant articles and documents

Preparation method of methylene methanedisulfonate

The invention discloses a preparation method of methylene methanedisulfonate, which comprises the following steps: by using methylene disulfonyl chloride and dichloromethane as raw materials, carbonate as an oxygen donor and 4dimethylaminopyridine as a catalyst, reacting at 0-50 DEG C for 12-36 hours, and recrystallizing a reaction product to obtain the methylene methanedisulfonate. Herein, the raw materials for synthesizing methylene methanedisulfonate are cheap and easy to obtain, so that the cost for producing methylene methanedisulfonate is low, the economic benefit is high, phosphorus pentoxide is not needed, viscous phosphoric acid is not generated, and phosphate treatment is avoided. According to the method, dichloromethane is used as a reaction raw material, carbonate is used as anoxygen donor, paraformaldehyde is not used, and formaldehyde wastewater difficult to treat is avoided; therefore, the method is mild in reaction process condition, simple and safe in operation process, high in product yield and short in production period, a high-purity product is obtained, and the application requirement of the lithium battery can be met.

Method for preparing methylene methanedisulfonate

The invention discloses a method for efficiently preparing high-purity methylene methanedisulfonate at a high yield. Methylene bis(chlorosulfonate), methyldisulfonic acid and a pyridyl group-containing resin which are used as raw materials are chemically reacted, and the obtained reaction product is subjected to a simple post-treatment purification process to obtain the high-purity methylene methanedisulfonate at the high yield, wherein the methylene bis(chlorosulfonate) can be prepared by reacting dichloromethane with sulfur trioxide, and the pyridyl group-containing resin can be recycled after being recovered. The method has the advantages of mild reaction conditions, simple and environmentally-friendly process, convenience in operation, wide sources of the raw materials, high yield andpurity of the product, and low preparation cost. The obtained methylene methanedisulfonate can be used as a power lithium battery electrolyte additive.

Synthesis method of methylene methanedisulfonate

The invention relates to the technical field of organic synthetic chemistry, and in particular, relates to a synthesis method of methylene methanedisulfonate. The synthesis method of methylene methanedisulfonate comprises the following steps: adding methyldisulfonic acid and dichloroethane into a reaction container, uniformly stirring, and adding phosphorus pentoxide; raising the temperature to 80-86 DEG C, adding paraformaldehyde and phosphorus pentoxide into the reaction container in batches at the same time, and carrying out reflux constant-temperature reaction for 1-3 h after feeding is completed; and after the reflux constant-temperature reaction is finished, standing for 0-3 min, pouring out supernatant liquid while the supernatant liquid is hot, cooling to room temperature, filtering the cooled supernatant, and draining to obtain white methylene methanedisulfonate. According to the synthesis method of methylene methanedisulfonate, the raw materials are easy to stir, the reactiontime is short, the reaction is sufficient, the yield is high, the technological process of the synthesis process is simple, operation is easy, subsequent treatment is simple, convenient and rapid, and the synthesis method is suitable for industrial large-scale production.