67-71-0
Methyl sulfone
CAS: 67-71-0
Molecular Formula: C2H6O2S
67-71-0 - Names and Identifiers
| Name | Methyl sulfone |
| Synonyms | MSM (CH3)2SO2 Methyl sulfone METHYLSULPHONE Methyl sulphone Dimethyl sulfone Dimethyl sulphone Sulfone, dimethyl- Methane,sulfonylbis- Methane, sulfonylbis- Methanesulfonylmethane Methyl Sulfonyl Methane (methylsulfonyl)methane |
| CAS | 67-71-0 |
| EINECS | 200-665-9 |
| InChI | InChI=1/C2H6O2S/c1-5(2,3)4/h1-2H3 |
| InChIKey | HHVIBTZHLRERCL-UHFFFAOYSA-N |
67-71-0 - Physico-chemical Properties
| Molecular Formula | C2H6O2S |
| Molar Mass | 94.13 |
| Density | 1,16 g/cm3 |
| Melting Point | 107-109 °C (lit.) |
| Boling Point | 238 °C (lit.) |
| Flash Point | 290°F |
| Water Solubility | 150 g/L (20 ºC) |
| Solubility | 150g/l |
| Vapor Presure | 0.0573mmHg at 25°C |
| Appearance | Crystals or Crystalline Powder |
| Color | White |
| Merck | 14,3258 |
| BRN | 1737717 |
| pKa | 28(at 25℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.4226 |
| MDL | MFCD00007566 |
| Physical and Chemical Properties | Melting point 107-111°C boiling point 238°C flash point 143°C water-soluble 150g/L (20°C) |
| Use | Used as raw materials for organic synthesis, high temperature solvents, food additives and health products raw materials |
67-71-0 - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | PB2785000 |
| TSCA | Yes |
| HS Code | 29309070 |
| Toxicity | LD50 orally in Rabbit: 17000 mg/kg LD50 dermal Rabbit > 5000 mg/kg |
67-71-0 - Upstream Downstream Industry
| Raw Materials | Methyl sulfoxide |
67-71-0 - Introduction
Easily soluble in water, ethanol, benzene, methanol and acetone, slightly soluble in ether and chloroform. It stinks. Solubility in water: 150g/l (20 C).
Last Update：2022-10-16 17:27:51
67-71-0 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | dimethyl sulfone is an organic sulfide, it has the ability to enhance the production of insulin in the human body and promote the metabolism of sugars. It is a necessary substance for the synthesis of collagen in the human body. It can promote wound healing, and also act on the synthesis and activation of vitamin B, vitamin C and biotin, which are needed for metabolism and nerve health. It is called "natural beauty carbon substance". It is contained in the skin, hair, nails, bones, muscles and organs of the human body. It is mainly found in the sea and soil in nature and is absorbed as nutrients in plant growth, humans can be from vegetables, fruits, fish, meat, eggs, milk and other food intake, once the Lack will cause health disorders or diseases, it is the main substance for the human body to maintain the balance of biological sulfur elements, and has therapeutic value and health care function for human diseases. It is an essential drug for human survival and health protection, it is widely used in foreign countries as a nutritional product as important as vitamins, and the application research of dimethyl sulfone in China has not been well carried out, so the products are all used for export. |
| effect | 1, it can eliminate Virus, strengthen blood circulation, soften tissue, relieve pain, strengthen tendons and bones, calm the spirit, enhance physical strength, skin maintenance, beauty, treatment of arthritis, oral ulcers, asthma, constipation, blood vessels, remove gastrointestinal toxins. 2, dimethyl sulfone can be used as food and feed additives for human, pet and livestock organic sulfur nutrient supplement. 3, external use can make the skin smooth, muscle is soft, and can reduce the color spots, the recent use of cosmetic additives increased dramatically. 4, in medicine has good analgesic, promote wound healing and other functions. 5, the production of drugs in the excellent penetrant. |
| refining method | The impurities contained in the finished products obtained by different methods are different, and the refining methods are also different. General to use activated carbon decolorization, ion exchange desalination, solvent recrystallization, vacuum drying, screening, adding antistatic agent, slip agent to meet the export requirements. There are no national or ministerial standards, and currently countries around the world still implement enterprise standards or contract indicators. |
| preparation method | 1. Oxidation under ultraviolet irradiation oxygen was irradiated with ultraviolet light to pass through a dimethyl sulfoxide solution, and an oxidation reaction was carried out under ultraviolet irradiation to produce dimethyl sulfone, which was crystallized by freezing with ice brine. Isolation. Re-crystallization was possible when needed. This oxidation process is also the natural process of dimethyl sulfoxide and dimethyl sulfoxide. 2. Nitrogen oxide dimethyl sulfoxide is put into the reaction kettle, heated to 140~146 ℃, and nitrogen dioxide is introduced for oxidation. The reaction exhaust gas is oxidized with oxygen to nitrogen dioxide and then returned to the reaction. After the reaction, the reaction mixture was cooled with ice brine, and dimethyl sulfone was crystallized to obtain White needle-like crystal crude product by filtration. The 138-145 °c (mmHg) fraction was collected by distillation as a final product. 3. Dimethyl sulfoxide is added to the hydrogen peroxide oxidation reactor, heated to 90~100 ℃, 27.5% hydrogen peroxide is added dropwise, Reflux reaction is carried out, hydrogen peroxide is added dropwise, and the reaction is continued for several hours. After filtration and cooling with ice-brine to precipitate crystals of dimethyl sulfone, the crystals were centrifuged and washed with 95% ethanol or recrystallized to give a fine product. Dry. The mother liquor was concentrated and the crystals were recovered. The overall yield was 90%-92%. |
| uses | used as high-temperature solvents for inorganic and organic substances, raw materials for organic synthesis, food additives and raw materials for health products, it can also be used as a gas chromatography stationary liquid (the highest temperature is 30 degrees C, the solvent is acetone) and Analytical reagents. used as gas chromatography stationary liquid, also used for the analysis of lower hydroxyl used as raw materials for organic synthesis, high temperature solvent, food additives and raw materials for health products |
| production method | is obtained by oxidation of dimethyl sulfoxide with nitric acid. Dimethyl sulfoxide was oxidized with nitric acid at 140-145 ° C. After completion of the reaction, it was cooled and filtered to obtain a crude product of white needle-like crystals. After vacuum distillation, 138-145 °c (98.42kPa) fraction was collected as the finished product. |
Last Update：2024-04-09 21:32:07
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Raw Materials for 67-71-0