Sulfur dichloride
sulfur dichloride
CAS: 10545-99-0
Molecular Formula: Cl2S
Sulfur dichloride - Names and Identifiers
| Name | sulfur dichloride |
| Synonyms | SCl2 sulfur dichloride Sulphur Dichloride Sulfur(II) chloride monosulfurdichloride Sulfur chloride(mono) sulfoxylic dichloride Monosulfur dichloride disulfurtetrachloride Sulfur chloride (SCl2) Sulfur dichloride (scl2) sulfur(+2) tetrahydride cation dichloride |
| CAS | 10545-99-0 |
| EINECS | 234-129-0 |
| InChI | InChI=1/2ClH.H4S/h2*1H;1H4/q;;+2/p-2 |
Sulfur dichloride - Physico-chemical Properties
| Molecular Formula | Cl2S |
| Molar Mass | 102.97 |
| Density | 1.355g/mLat 25°C |
| Melting Point | -122°C |
| Boling Point | 59.6°C (estimate) |
| Vapor Presure | 25.67 psi ( 55 °C) |
| Vapor Density | 3.55 (vs air) |
| Appearance | red viscous liquid |
| Physical and Chemical Properties | Dark red or light red liquid. melting point -78 ℃ boiling point 59 ℃ (decomposition) relative density 1.621g/cm3 soluble in carbon tetrachloride, benzene. |
| Use | It is used as a chlorinating agent in organic synthesis, a chloride in the manufacture of anhydrides or organic acids, an additive for high-pressure lubricants and cutting oils, and can also be used as a disinfectant and Bactericide |
Sulfur dichloride - Risk and Safety
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R34 - Causes burns R40 - Limited evidence of a carcinogenic effect R50 - Very Toxic to aquatic organisms R37 - Irritating to the respiratory system R14 - Reacts violently with water R35 - Causes severe burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3390 6.1/PG 1 |
| HS Code | 28121042 |
| Hazard Class | 8 |
| Packing Group | I |
Sulfur dichloride - Upstream Downstream Industry
Sulfur dichloride - Nature
Open Data Verified Data
dark red or light red liquid, with irritating odor. The relative density was 1. 621. Melting Point -78 °c. Boiling point of 59 degrees C (decomposition). The relative vapor density (Air = 1) was 3.55. Saturated vapor pressure: 22.66 kPa( 20 °c). The refractive index of 1.557 (11 deg C) dissolved in carbon tetrachloride, benzene. When heated to a temperature above 40 °c, a portion begins to decompose. Moisture is suppressed to resolve sulfur, and polysulfuric acid and sulfuric acid are generated. Its chemical properties are similar to those of a mixture of sulfur monochloride and chlorine. Reaction with excess sulfur trioxide produces pyrosulfuryl chloride (S2 05 Cl2).
Last Update：2024-01-02 23:10:35
Sulfur dichloride - Preparation Method
Open Data Verified Data
sulfur monochloride chlorination method: sulfur monochloride is added into the sandwich reactor, heated by steam, and chlorine gas is introduced for chlorination reaction, and the reaction is carried out at a temperature lower than 40 ℃ in the later stage, crude sulfur dichloride was obtained. Then the crude product with a certain amount of phosphorus trichloride stabilizer
Mixing, through the rotor flow meter and the preheater into the first distillation column, the generated vapor is sent to the second distillation column through the top condensation system and the intercooler, and the chlorine gas is removed by distillation, at the bottom of the column, 98% ~ 99% pure sulfur dichloride product can be obtained.
Last Update：2022-01-01 11:00:16
Sulfur dichloride - Use
Open Data Verified Data
chlorinating agents for organic synthesis, production of chlorides of anhydrides or organic acids, high-pressure lubricants. Used as an additive for cutting oils. Processing agent for processing vegetable oils (such as corn oil, cottonseed oil, soybean oil) in the oil industry. Also used as disinfectants, fungicides.
Last Update：2022-01-01 11:00:15
Sulfur dichloride - Safety
Open Data Verified Data
belongs to the first class of inorganic acid corrosion articles, risk code number: GB 8.1 class 81033. UN N0.1828;IMDG CODE P. 8229, Category 8.1. Steel bottle packaging or acid-resistant jar or ceramic bottle outside the ordinary wooden box or half-flowered wooden box; Packaging should have a clear "corrosion" signs. Should be stored in a cool, ventilated, dry warehouse. Stay away from the heat source and the type of fire. It shall not be stored and mixed with oxidants, combustibles, food additives, alkali substances, water, aluminum, ammonia, potassium, sodium, etc. During the transport process to prevent rain and sun, high temperature. Light handling during loading and unloading
No impact was allowed. When there is a fire, it can be suppressed by sand and dry powder extinguishing agent. Use of water was not allowed. Toxicity and protection: see sulfur monochloride.
Last Update：2022-01-01 11:00:16
Sulfur dichloride - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | chlorinating agent for organic synthesis, chloride for acid anhydride or organic acid, high pressure lubricant. Used as an additive in cutting oil. Oil industry processing agent for processing vegetable oils (such as corn oil, cottonseed oil, soybean oil). It is also used as a disinfectant and fungicide. Sulfur dichloride is an intermediate for the preparation of carbamate insecticides carbosulfan and propylcarbofuran. It can also be used as a chlorinating agent for organic synthesis to produce acid anhydride or organic acid chloride, High-pressure lubricating oil can be used as an additive for cutting oil, a processing agent for oil processing vegetable oils (such as corn oil, cottonseed oil, soybean oil) in the oil industry, and also as a disinfectant and fungicide. Used as a chlorinating agent for organic synthesis, to make chlorides of anhydrides or organic acids, additives for high-pressure lubricants and cutting oils, and can also be used as disinfectants and fungicides |
| production method | sulfur monochloride is added to the interlayer reactor, steam is introduced for heating, and chlorine gas is introduced for chlorination reaction. at the later stage of the reaction, it is carried out at a temperature lower than 40 ℃ to obtain crude sulfur dichloride. Then the crude product is mixed with a certain amount of phosphorus trichloride stabilizer, and enters the first distillation tower through the rotameter and preheater, and the generated vapor is sent to the second distillation tower through the top condensation system and the intercooler, and the chlorine is removed by distillation., The bottom of the tower can obtain a finished product of sulfur dichloride with a purity of 98% to 99%. The reaction equation is as follows: S2Cl2 Cl2 → 2SCl2 sulfur dichloride is a dark red or light red liquid, m.p.-78 ℃, B. p.59 ℃ (decomposition), the relative density is 1.621, soluble in carbon tetrachloride and benzene, heated to above 40 ℃, partial decomposition starts, decomposes with water to precipitate sulfur, and generates polysulfuric acid and sulfuric acid. Its chemical properties are similar to the mixture of sulfur monochloride and chlorine, reaction with excess sulfur trichloride to produce pyrosulfuryl chloride. The sulfur chloride method adds sulfur chloride to the interlayer reactor, is heated by steam, and at the same time, chlorine is introduced for chlorination reaction, and the reaction should be carried out at a temperature lower than 40 ℃ in the later stage to obtain crude sulfur dichloride. Then the crude product is mixed with a certain amount of phosphorus trichloride stabilizer, and enters the first distillation tower through the rotameter and preheater, and the generated vapor is sent to the second distillation tower through the top condensation system and the intercooler, and the chlorine is removed by distillation., The bottom of the tower can obtain a finished product of sulfur dichloride with a purity of 98% to 99%. S2C12+C12→2SC12 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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