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| CAS No.: | 7783-06-4 |
|---|---|
| Name: | Hydrogen sulfide |
| Molecular Structure: | |
|
|
|
| Formula: | H2S |
| Molecular Weight: | 34.0819 |
| Synonyms: | Dihydrogenmonosulfide; Dihydrogen sulfide; Hydrogen sulfide; Hydrosulfuric acid; Stinkdamp; Sulfur dihydride; Sulfur hydride; Sulfur hydride (SH2); Sulfuretedhydrogen |
| EINECS: | 231-977-3 |
| Density: | 1.19 (15oC. vs air) |
| Melting Point: | ?85 °C(lit.) |
| Boiling Point: | -60 ºC |
| Flash Point: | -82 C |
| Appearance: | colourless gas with strong odour of rotten eggs |
| Hazard Symbols: |
 T+ F+ N
|
| Risk Codes: | 12-26-50 |
| Safety: | 9-16-36-38-45-61 7 |
| Transport Information: | UN 1053 2.3 |
| PSA: | 25.30000 |
| LogP: | 0.11280 |
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| Conditions | Yield |
|---|---|
| In neat (no solvent) byproducts: H2O; redn. of SO2 by H2 (1:2), SO2-conversion at 114°C practically 100%;; | A 100% B n/a |
| In neat (no solvent) byproducts: H2O; redn. of SO2 by H2 (1:2), SO2-conversion at 114°C practically 100%;; | A 100% B n/a |
| In neat (no solvent) byproducts: H2O; redn. of SO2 by H2, investigation of equilibrium constants;; |
| Conditions | Yield |
|---|---|
| With catalyst: cobalt molybdate/SiO2 great excess of CH4; Co molybdate supported on SiO2; at 593-704°C and 1 atm; | 100% |
| With catalyst: V/Al2O3 20 vol% SO2 : 80 vol% CH4; 5 % V on γ-Al2O3; at 545°C and atm. pressure; | 95-100 |
| calcium(II) sulfide |
| Conditions | Yield |
|---|---|
| In water thermal decompn. of 1/50-1/400 N aq. solns. of educt at 0-21.5°C; | 98.5% |
- 201230-82-2
carbon monoxide
- 1333-74-0
hydrogen
A
- 7783-06-4
hydrogen sulfide
B
- 7732-18-5
water
C
- 497-19-8
sodium carbonate
| Conditions | Yield |
|---|---|
| with molten Na2SO4*10H2O; heating at 927 to 983°C for 2 h; ratio of CO and H2 1:3; | A 98% B n/a C n/a |
- 7047-10-1
5-phenyl-3H-1,2,4-dithiazole-3-one
A
- 7783-06-4
hydrogen sulfide
B
- 2227-79-4
benzenecarbothioamide
| Conditions | Yield |
|---|---|
| With carbonic anhydrase from bovine erythrocytes; GLUTATHIONE In aq. phosphate buffer; dimethyl sulfoxide at 20℃; for 4h; pH=7.4; Reagent/catalyst; Enzymatic reaction; | A n/a B 98% |
| Conditions | Yield |
|---|---|
| In methanol; water molar ratio of CO:S = 1.36; 35 min; at 110°C; 60% excess of NH3; 75% CH3OH; | A n/a B 96.2% |
| In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH; | A n/a B 96.2% |
| In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH; | A n/a B 96.3% |
| Conditions | Yield |
|---|---|
| With catalyst: Ni-Cr catalyst unstable at 360°C; 10-20 % excess of S; | 95.9% |
| With catalyst: Ni-Cr catalyst unstable at 360°C; 10-20 % excess of S; | 95.9% |
| nickel at 360°C; 10-20 % excess of S; | 91.1% |
| Conditions | Yield |
|---|---|
| 21 hours; | A n/a B n/a C 95% D n/a E n/a |
| 21 hours; | A n/a B n/a C 95% D n/a E n/a |
| 1/2 hours; | A n/a B n/a C 56% D n/a E n/a |
| 1/2 hours; | A n/a B n/a C 56% D n/a E n/a |
| Conditions | Yield |
|---|---|
| -78°C; | A n/a B 92% |
| Conditions | Yield |
|---|---|
| With pyrographite In water byproducts: CO; react. at 600 to 800°C;; yield of H2S 90% (corresponding to S), theoretically calcd.;; | 90% |
| With C In water byproducts: CO; react. at 600 to 800°C;; yield of H2S 90% (corresponding to S), theoretically calcd.;; | 90% |
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Chemistry
Molecular Structure:
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Molecular Formula: H2S
Molecular Weight: 34.0809
IUPAC Name: Hydrogen sulfide
Synonyms of Hydrogen sulfide (CAS NO.7783-06-4): Hydrogen sulfide (H2S) ; Hydrogen sulphide ; Hydrogen sulfide H2S ; Hydrogen sulfide [UN1053] [Poison gas] ; RCRA waste no. U135 ; UN1053
CAS NO: 7783-06-4
Classification Code: Air pollutants ; Environmental Pollutants ; Human Data ; Reproductive Effect
Melting point: −85 °C
Polar Surface Area: 25.3 Å2
Enthalpy of Vaporization: 18.67 kJ/mol
Vapour Pressure: 12600 mmHg at 25°C
Uses
Hydrogen sulfide (CAS NO.7783-06-4) is used in the producetion of several organosulfur compounds.
Upon combining with alkali metal bases, hydrogen sulfide converts to alkali hydroSULFIDES such as SODIUM HYDROSULFIDE and sodium sulfide, which are used in the degradation of biopolymers. It was used in analytical chemistry. It is a precursor to metal SULFIDES. It is also used in the separation of DEUTERIUM oxide.
Production
Hydrogen sulfide (CAS NO.7783-06-4) is obtained by its separation from sour gas, which is natural gas with high content of H2S. It can be produced by reacting hydrogen gas with molten elemental SULFUR at about 450 °C.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| human | LCLo | inhalation | 600ppm/30M (600ppm) | "Practical Toxicology of Plastics," Lefaux, R., Cleveland, OH, Chemical Rubber Co., 1968Vol. -, Pg. 207, 1968. | |
| human | LCLo | inhalation | 800ppm/5M (800ppm) | Tabulae Biologicae. Vol. 3, Pg. 231, 1933. | |
| mammal (species unspecified) | LCLo | inhalation | 800ppm/5M (800ppm) | Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 138, Pg. 65, 1928. | |
| man | LCLo | inhalation | 5700ug/kg (5.7mg/kg) | BEHAVIORAL: COMA LUNGS, THORAX, OR RESPIRATION: CHRONIC PULMONARY EDEMA | Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale. Vol. 44, Pg. 483, 1983. |
| mouse | LC50 | inhalation | 634ppm/1H (634ppm) | Aerospace Medical Research Laboratory Report. Vol. TR-72-62, Pg. 1972, | |
| rat | LC50 | inhalation | 444ppm (444ppm) | LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" KIDNEY, URETER, AND BLADDER: URINE VOLUME INCREASED | Personal Communication from H.B. Lackey, Chemical Products Div., Crown Zellerbach, Camas, WA 98607, June 9, 1978Vol. 09JUN1978, |
Safety Profile
HYDROGEN sulfide is a highly toxic and flammable gas. Being heavier than air, it tends to accumulate at the bottom of poorly ventilated spaces. Although very pungent at first, it quickly deadens the sense of smell, so potential victims may be unaware of its presence until it is too late. For safe handling procedures, a HYDROGEN sulfide material safety data sheet (MSDS) should be consulted.
Hazard Codes of Hydrogen sulfide (CAS NO.7783-06-4): 
F+,
T+,
N
Risk Statements: 12-26-50
R12: Extremely flammable.
R26: Very toxic by inhalation.
R50: Very toxic to aquatic organisms.
Safety Statements: 9-16-36-38-45-61
S9: Keep container in a well-ventilated place.
S16: Keep away from sources of ignition.
S36: Wear suitable protective clothing.
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.)
S61: Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 1053 2.3
WGK Germany: 2
HazardClass: 2.3