SF4
sulfur tetrafluoride
CAS: 7783-60-0
Molecular Formula: F4S
SF4 - Names and Identifiers
| Name | sulfur tetrafluoride |
| Synonyms | SF4 sulfur tetrafluoride Tetrafluorosulfurane Sulfur fluoride (SF4) Sulphur tetrafluoride tetrafluoruredesoufre (beta-4)-sulfurfluoride(sf4 tetrafluoro-lambda~4~-sulfane Sulfur fluoride (SF4), (T-4)- sulfur tetrafluoride cyl. with 450 G (~net) |
| CAS | 7783-60-0 |
| EINECS | 232-013-4 |
| InChI | InChI=1/F4S/c1-5(2,3)4 |
SF4 - Physico-chemical Properties
| Molecular Formula | F4S |
| Molar Mass | 108.05 |
| Density | 1.941 |
| Melting Point | −121.5-−120.5°C(lit.) |
| Boling Point | −40.4°C(lit.) |
| Water Solubility | decomposes in H2O [HAW93] |
| Vapor Presure | 140 psi ( 21 °C) |
| Appearance | colorless gas |
| Merck | 13,9068 |
| Refractive Index | 1.229 |
SF4 - Risk and Safety
| Risk Codes | R14 - Reacts violently with water R26 - Very Toxic by inhalation R34 - Causes burns R37 - Irritating to the respiratory system |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2418 2.3 |
| WGK Germany | 3 |
| RTECS | WT4800000 |
| Hazard Note | Highly Toxic/Corrosive |
| Hazard Class | 2.3 |
SF4 - Reference Information
Open Data Unverified Data
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| selective organofluorinating agent | sulfur tetrafluoride is a selective organofluorinating agent, on its molecular structure, S atoms form a sigma bond with sp3d hybrid orbitals, and the molecular shape is a deformed tetragonal shape, which is a colorless gas with a strong stimulation odor similar to sulfur dioxide gas at normal temperature and pressure, toxic, in the air does not burn, not explosive; At 600 deg C is still very stable. Strong hydrolysis in air gives rise to white smoke. The presence of moisture in the environment can cause corrosion similar to hydrofluoric acid. Complete hydrolysis into sulfur dioxide and hydrofluoric acid, part of the hydrolysis, the formation of toxic thionyl fluoride, but can be absorbed by the strong alkali solution into a non-toxic harmless salts; Soluble in benzene. sulfur tetrafluoride (SF4) is the most effective selective organic fluorinating agent widely used at present. It can selectively fluorinate carbonyl and hydroxyl groups (replace oxygen in carbonyl compounds); it is widely used in the production of high-grade liquid crystal materials and high-end pharmaceutical and pesticide industrial intermediates in Fine Chemicals, and has an irreplaceable position. |
| category | hazardous gas |
| toxicity grade | poisoning |
| Acute toxicity | inhalation-rat LCL0: 19 PPM/4 h |
| flammability hazard characteristics | decomposition of toxic hydrogen fluoride and sulfur dioxide gases in water |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; With acid, with flammable, separate storage of explosive materials |
| extinguishing agent | Water |
| Occupational Standard | TWA 2.5 mg (fluorine)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:43:38
