126-33-0
Tetramethylene sulfone
CAS: 126-33-0
Molecular Formula: C4H8O2S
126-33-0 - Names and Identifiers
126-33-0 - Physico-chemical Properties
| Molecular Formula | C4H8O2S |
| Molar Mass | 120.17 |
| Density | 1.261 g/mL at 25 °C (lit.) |
| Melting Point | 20-26 °C (lit.) |
| Boling Point | 104 °C/0.2 mmHg (lit.)285 °C (lit.) |
| Flash Point | 330°F |
| Water Solubility | soluble |
| Solubility | >=100g/l soluble |
| Vapor Presure | 0.01 mm Hg ( 20 °C) |
| Vapor Density | 4.2 (vs air) |
| Appearance | Liquid After Melting |
| Color | Clear yellow |
| Merck | 14,8955 |
| BRN | 107765 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Sensitive | Hygroscopic |
| Refractive Index | n20/D 1.484(lit.) |
| Physical and Chemical Properties | Characteristics of colorless and tasteless solid, at 27~28 deg C, melting into a colorless transparent liquid. boiling point 287 ℃ freezing point 26 ℃ relative density 1.261 refractive index 1.481 flash point 176.7 ℃ soluble in water, mixed xylene, methyl mercaptan, ethyl mercaptan miscible, also soluble in aromatic hydrocarbons and alcohols. |
| Use | It is used for the purification and desulfurization of natural gas, the extraction of aromatic hydrocarbons from oil produced by reforming, and the removal of impurities such as carbon dioxide, hydrogen sulfide and organic sulfur in hydrogen. |
126-33-0 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| Safety Description | S23 - Do not breathe vapour. S25 - Avoid contact with eyes. |
| WGK Germany | 1 |
| RTECS | XN0700000 |
| TSCA | Yes |
| HS Code | 29349990 |
| Toxicity | LD50 orally in rats: 1.54 ml/kg (Smyth) |
126-33-0 - Upstream Downstream Industry
| Raw Materials | 1,3-butadiene |
| Downstream Products | Hexaflumuron |
126-33-0 - Reference Information
Open Data Unverified Data
| freezing point | 26 ℃ |
| LogP | 0 at 20℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | sulfolane solvent has high solubility for aromatic hydrocarbons, good selectivity, good thermal stability, low vapor pressure, sulfolane extraction technology has become the most widely used aromatic extraction technology in the world because of its low toxicity and no corrosion to carbon steel. |
| purpose | used as gas chromatography stationary liquid and analytical reagent, also used in organic synthesis strong solubility, polar solvent with good selectivity, most organic compounds and polymers can be dissolved in sulfolane, or miscible with it. It is mainly used as an extractant for aromatic extraction, polymer spinning or casting film solvent, purification of natural gas and synthesis gas, refinery gas, purification and desulfurization of synthesis gas, and as a solvent for rubber and plastic. In addition, it can also be used in the textile printing and dyeing industry as a printing and dyeing auxiliary, which can make the color bright and bright. sulfolane solvent has the characteristics of high solubility, good selectivity, good thermal stability, low vapor pressure, low toxicity and no corrosion to carbon steel, sulfolane extraction technology has become the most widely used aromatic extraction technology in the world. It is used for the purification and desulfurization of natural gas, the extraction of aromatic hydrocarbons from reforming oil, and the removal of impurities such as carbon dioxide, hydrogen sulfide and organic sulfur in hydrogen. An efficient and versatile solvent; gas chromatography stationary liquid (maximum temperature 100 ℃, solvent acetone), separation and analysis of lower hydrocarbon isomers; Used as gas-liquid extraction selective solvent, extraction of aromatic hydrocarbons from aliphatic hydrocarbons, removal of acid gases from gas mixtures |
| production method | butadiene, sulfur dioxide as raw materials, in the presence of hydroquinone in methanol solvent, the methanol solution of sulfolene is synthesized by heating in a pressure-resistant reactor (100-110 ℃). After fractionation, sulfolene is hydrogenated into sulfolane in the presence of nickel-containing catalyst, and then separated by gas-liquid, the finished product was obtained after fractionation. Raw material consumption quota: butadiene (>99%)654kg/t, sulfur dioxide (>97%)909kg/t, aluminum nickel catalyst (Ni45-50%)71kg/t, liquid sodium hydroxide 110kg/t. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:43:38
126-33-0 - Nature
Open Data Verified Data
A colorless and odorless solid melts to a colorless transparent liquid at 27-28 °c. Freezing point (99.8% concentration) 26. Boiling point 287 °c. The relative density was 1. 261. Refractive index 481. Flash point (Open Cup) 176.7 °c. Viscosity 10. 34MPa. s(30 ℃). Can be mixed with water, xylene, methyl mercaptan, ethyl mercaptan miscible, but also soluble in aromatic hydrocarbons and alcohols, paraffin hydrocarbons and olefin solubility is very small. It has good chemical and thermal stability.
Last Update：2025-06-10 22:55:16
126-33-0 - Preparation Method
Open Data Verified Data
with butadiene, sulfur dioxide as raw materials, in the presence of hydroquinone in methanol solvent, in pressure reactor heating (100~110 ℃) synthesis of sulphone methanol solution, the crude sulfolane is converted into sulfolane by hydrogenation in the presence of a nickel-containing catalyst, and then subjected to gas-liquid separation and fractionation to obtain a finished product.
Last Update：2022-01-01 10:39:10
126-33-0 - Application
Open Data Verified Data
polar solvent with strong solubility and good selectivity. Most organic compounds and polymers are soluble in sulfolane or miscible with it. Generally used as aromatic extraction solvent, polymer spinning or casting film solvent, natural gas and synthesis gas, refinery gas purification, desulfurization solvent and plastic
Material, rubber solvent, etc. In addition, it can also be used in the textile printing and dyeing industry as a printing and dyeing auxiliary, which can make the color bright and bright.
Last Update：2025-08-19 16:24:40
126-33-0 - Safety
Open Data Verified Data
- the toxicity of this product is low, the general animal oral LD50 0.73~9.4g/kg. When splash and skin can be washed with water.
- the use of galvanized iron drum packaging, storage at room temperature or low temperature. According to the general provisions of the storage and transportation of chemicals.
Last Update：2025-06-10 22:55:16
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Raw Materials for 126-33-0
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