| Name | CARBONYL SULFIDE |
| Synonyms | CARBONYL SULFIDE CARBON OXYSULFIDE Carbonyl sulphide Carbon Oxysulphide carbonoxidesulfide Carbon oxide sulfide Carbon oxide sulphide carbonmonoxidemonosulfide |
| CAS | 463-58-1 |
| EINECS | 207-340-0 |
| InChIKey | JJWKPURADFRFRB-UHFFFAOYSA-N |
| Molecular Formula | COS |
| Molar Mass | 60.07 |
| Density | 1.274; 2.4849 |
| Melting Point | −138 °C(lit.) |
| Boling Point | −50 °C(lit.) |
| Water Solubility | mL/100mL H2O: 133.3 (0°C), 56.1 (20°C), 40.3 (30°C) [LAN05]; slowly decomposes in H2O [COT88]; soluble alcohol [HAW93] |
| Vapor Presure | 9034 mm Hg ( 21 °C) |
| Vapor Density | 2.1 (20 °C, vs air) |
| Appearance | morphological gas |
| Stability | Stable. Corrosive to common metals when moisture is present. Reacts vigorously with oxidants. Flammable. Suck-back into cylinder may cause rupture. |
| Refractive Index | n 1.3785 |
| Physical and Chemical Properties | Chemical quality This product is a colorless and odorless gas, m.p.-138.2 ℃, B. p.-50 ℃, relative density 0.986, gas density 2.688g/L (under standard condition), vapor pressure 30 ℃ 1.5 MPa, solubility (25 ℃) 100 mL water dissolves 0.122g,100 units of ethanol dissolves 800 units, 100 units of volume of toluene solution dissolves 1500 units of volume. This product is a toxic and combustible gas. |
| Use | Uses oxygen sulfide carbon is an intermediate of carbamate herbicides such as grass Dan, wild yandica, oat enemy, oat enemy 2, etc. For organic synthesis of intermediates, pesticide industry for the synthesis of herbicides, herbicide, oat enemies, pesticides, such as Badan. |
| Risk Codes | R11 - Highly Flammable R20 - Harmful by inhalation R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. |
| UN IDs | UN 2204 2.3 |
| WGK Germany | 3 |
| RTECS | FG6400000 |
| Hazard Class | 2.3 |
| Toxicity | LD50 i.p. in rats: 22.5 mg/kg; LC50 by inhalation (mg/m3): 2940 in mice (35 min); 2650 in rats (4 h) (Bartholomaeus, Haritos) |
| olfactory threshold (Odor Threshold) | 0.055ppm |
| explosion limit value (explosive limit) | 11.9-29% |
| toxic substance data | 463-58-1(Hazardous Substances Data) |
production method
1. the molar ratio of sulfur to carbon monoxide catalyzed by carbon monoxide and sulfur is 3-5:1, the reaction temperature is 350-450 ℃, sulfide (such as sodium sulfide, potassium sulfide, nickel sulfide, etc.) is used as catalyst, and the atmospheric reaction is 0.5-2min, the yield is 92%-97%, and the purity of the product is above 92%. This reaction can also be catalyzed by pressure, using sodium acetate as catalyst and butanol as solvent at 1.27MPa and 125-130 ℃ to obtain carbon oxysulfide in 90% yield. In addition, using BX molecular sieve as catalyst, the gas-solid catalytic method of carbon oxysulfide has also achieved good results. 2. It is obtained by the reaction of carbon disulfide and urea. At 120-160 ℃ for 3.5-4h, the yield of carbon oxysulfide can reach 90%-98% and that of ammonium thiocyanide can reach 70%-80%. 3. This method uses charcoal as a catalyst by the reaction of carbon monoxide and sulfur dioxide, and the reaction temperature is 760-980 ℃. 4. Carbon dioxide and hydrogen sulfide can also be produced by catalytic reaction at 250-400 ℃ under normal pressure. The catalyst is sodium carbonate, potassium sulfate, etc.
The preparation method is to use coke and oxygen to react in the carbon monoxide generator to generate carbon monoxide, after cooling, water washing, dust removal, alkali washing, and remove impurities such as hydrogen sulfide and carbon dioxide, and enter the carbon monoxide gas tank for standby.
After melting, sulfur is quantitatively added to the carbon oxysulfide reactor, and a certain sulfur liquid level in the reactor is maintained. According to the ratio of carbon monoxide: sulfur = 1:3, the dehydrated and dried carbon monoxide is introduced into the reactor in a bubbling manner, mixed with sulfur vapor evenly, and then entered the tubular carbon oxysulfide reactor. In the presence of a catalyst, the carbon oxysulfide is generated at 400~500 ℃, and the unreacted, after cooling, alkali washing and removing impurities such as carbon dioxide and hydrogen sulfide, carbon oxysulfide with a content of more than 90% is obtained.
CO + S [catalyst] & rarr;[400~500 ℃]COS
category
Compressed gas and liquefied gas
toxicity classification
High toxicity
acute toxicity
inhalation-rat LCL0: 2270 mg/m3; abdominal injection-mouse LD50: 23 mg/kg
explosive hazard characteristics
Explosive mixing with air
flammability hazard characteristics
Flammable; combustion produces toxic sulfur dioxide gas; reaction with water to produce hydrogen sulfide gas
storage and transportation features
The warehouse is ventilated and dry at low temperature; stored separately from the oxidant
fire extinguishing agent
Water
occupational standards
TLV-TWA 10 mg/m3; STEL 20 mg/m3