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| CAS No.: | 463-58-1 |
|---|---|
| Name: | Carbonyl sulfide |
| Molecular Structure: | |
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|
|
| Formula: | CO S |
| Molecular Weight: | 60.0764 |
| Synonyms: | Carbonylsulfide (8CI); Carbon monoxide monosulfide; Carbon oxide sulfide; Carbonoxysulfide; Carbon oxysulfide (COS); Carbonyl sulfide (COS); OCS; Oxycarbonsulfide (COS); Thiocarbonyl oxide |
| EINECS: | 207-340-0 |
| Density: | 1.259g/cm3 |
| Melting Point: | -139 C |
| Boiling Point: | 46.2°Cat760mmHg |
| Flash Point: | °C |
| Appearance: | colourless gas with an unpleasant smell; cylinderwill be marked with red/yellow bands at valve end to denote contentsare both flammable and toxic |
| Hazard Symbols: | Narcotic in high concentrations. Flammable, explosive limits in air 12–28.5%. |
| Risk Codes: | R11; R20; R36/37/38 |
| Safety: | Poison by intraperitoneal route. Mildly toxic by inhalation. Narcotic in high concentration. An irritant. May liberate highly toxic hydrogen sulfide upon decomposition. A very dangerous fire hazard and moderate explosion hazard when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, stop flow of gas or use CO2, dry chemical, or water spray. When heated to decomposition it emits toxic fumes of CO. See also CARBONYLS and SULFIDES. |
| PSA: | 49.16000 |
| LogP: | 0.25110 |
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| Conditions | Yield |
|---|---|
| With catalyst: La2O3-TiO2 highest activity with 1:1 La:Ti ratio; 500°C, 1 atm, in the presence of N2; | A <1 B 95% |
| With catalyst: Fe-Al2O3 byproducts: CO2; highest SO2 reduction with 40 % Fe in the catalyst, maximum COS yield at 400°C; | |
| With catalyst: Cu-Al2O3 H2O vapour diminishes catalyst activity; |
- 7218-04-4, 26117-28-2, 616-91-1
N-Acetylcysteine
A
- 80-73-9
1,3-dimethyl-2-imidazolidinone
B
- 463-58-1
carbon oxide sulfide
C
- 5545-17-5, 97247-12-6, 139602-29-2
N,N'-bis(acetyl)cystine
J
- 76480-10-9
C16H28N2O6S3
K
- 76480-11-0
C16H28N2O6S4
L
- 83151-19-3
1-Acetamido-1-(carbomethoxy)-2-methyl-2-propyl Hydrodisulfide
| Conditions | Yield |
|---|---|
| With diethylenetriaminopentaacetic acid In aq. buffer at 37℃; pH=7.4; | A 87% B n/a C n/a D n/a E n/a F n/a G n/a H n/a I n/a J n/a K n/a L n/a |
- 93097-85-9
di-O-isopropyl-S,S-phthaloyl dixanthate (unsymmetrical)
A
- 5698-59-9
benzo[c]thiophene-1,3-dione
B
- 463-58-1
carbon oxide sulfide
C
- 57542-45-7
O,S-diisopropyl xanthate
D
- 19357-64-3
Biphthalidyliden
| Conditions | Yield |
|---|---|
| at 250℃; for 0.5h; other dixanthate; | A 29% B 82% C 16% D 24% |
| Conditions | Yield |
|---|---|
| byproducts: CO, CO2; at 1400 K, with excess of carbon; | A 81.16% B 10.82% C 8.02% |
| byproducts: CO, CO2; at 1000 K, with excess of carbon; | A 37.08% B 3.22% C 59.7% |
| Conditions | Yield |
|---|---|
| In neat (no solvent) at 120℃; for 6h; Rate constant; Product distribution; | A n/a B 81% |
- 103-72-0
phenyl isothiocyanate
- 215675-49-3
1-cyclohexyl-4,5-diphenylimidazole 3-oxide
A
- 463-58-1
carbon oxide sulfide
| Conditions | Yield |
|---|---|
| In dichloromethane at 20℃; for 20h; Cycloaddition; elimination; | A n/a B 81% |
- 556-61-6
methyl thioisocyanate
- 215675-47-1
1-methyl-4,5-diphenyl-1H-imidazole 3-oxide
A
- 463-58-1
carbon oxide sulfide
| Conditions | Yield |
|---|---|
| In dichloromethane at 20℃; for 20h; Cycloaddition; elimination; | A n/a B 76% |
- 77420-85-0
1,4-diphenyl-1-ethylxanthyl-2,3-diazabutadiene
A
- 463-58-1
carbon oxide sulfide
B
- 1456-21-9
diphenyl-[1,3,4]thiadiazole
| Conditions | Yield |
|---|---|
| at 240℃; for 20h; sealed tube; | A n/a B 69% |
- 103-72-0
phenyl isothiocyanate
- 55738-12-0
1-benzyl-4,5-dimethyl-1H-imidazole 3-oxide
A
- 463-58-1
carbon oxide sulfide
| Conditions | Yield |
|---|---|
| In dichloromethane at 20℃; for 20h; Cycloaddition; elimination; | A n/a B 58% |
- 7218-04-4, 26117-28-2, 616-91-1
N-Acetylcysteine
A
- 463-58-1
carbon oxide sulfide
B
- 39239-85-5
methyl 2-acetamido-3-mercapto-3-methylbutanoate
H
- 76480-10-9
C16H28N2O6S3
I
- 76480-11-0
C16H28N2O6S4
| Conditions | Yield |
|---|---|
| With diethylenetriaminopentaacetic acid; ammonium bicarbonate In aq. buffer at 37℃; pH=7.4; Mechanism; Reagent/catalyst; Solvent; | A n/a B n/a C n/a D n/a E n/a F 53% G n/a H n/a I n/a |
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- Total:8 Page 1 of 1 1
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Chemistry
MW: 60.08
EINECS: 207-340-0
mp: 138 °C(lit.)
bp: 50 °C(lit.)
vapor density: 2.1 (20 °C, vs air)
vapor pressure: 9034 mm Hg ( 21 °C)
form: gas
Carbonyl sulfide is the chemical compound with the formula OCS. Commonly written as COS, it is a colourless flammable gas with an unpleasant odor. It is a linear molecule consisting of a carbonyl group double bonded to a sulfur atom. Carbonyl sulfide can be considered to be intermediate between carbon dioxide and carbon disulfide, both of which are isoelectronic with it.
Uses
2、Carbonyl sulfide's primary use as a chemical intermediate and as a byproduct of carbon disulfide production.
3、It is also a significant sulfur-containing impurity in synthesis gas.
Toxicity Data With Reference
2、In tests with rats, 50% animals died when exposed to 1400 ppm of COS for 90 minutes, or at 3000 ppm for 9 minutes.Limited studies with laboratory animal studies also suggest that continued inhalation of low concentrations (approximately 50 ppm for up to 12 weeks) does not affect the lungs or the heart.
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Consensus Reports
Safety Profile
Hazard Codes： F,Xn
Risk Statements： 11-20-36/37/38
Safety Statements： 16-26-38
RIDADR： UN 2204 2.3
WGK Germany： 3
RTECS： FG6400000
HazardClass： 2.3
Poison by intraperitoneal route. Mildly toxic by inhalation. Narcotic in high concentration. An irritant. May liberate highly toxic hydrogen sulfide upon decomposition. A very dangerous fire hazard and moderate explosion hazard when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, stop flow of gas or use CO2, dry chemical, or water spray. When heated to decomposition it emits toxic fumes of CO.