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HYDROGEN SULFIDE

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Products Intro: Product Name:HYDROGEN SULFIDE
CAS:7783-06-4
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Products Intro: Product Name:Hydrogen sulfide
CAS:7783-06-4
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Products Intro: Product Name:Hydrogen sulfide
CAS:7783-06-4
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Products Intro: Product Name:Hydrogen sulfide
CAS:7783-06-4
Purity:98% Package:50kg;25kg;10kg;5kg;500g;500mg;
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Products Intro: Product Name:HYDROGEN SULFIDE
CAS:7783-06-4
Purity:>98% HPLC Package:100g;500g;1kg;10kg
HYDROGEN SULFIDE Basic information
Product Name:HYDROGEN SULFIDE
Synonyms:H2S;HYDROGEN SULFIDE, SOLID;HYDROGEN SULFIDE WATER;HYDROGEN SULFIDE WATER, SAT;HYDROGEN SULPHIDE;HYDROGEN SULFIDE;Acide sulfhydrique;acidesulfhydrique
CAS:7783-06-4
MF:H2S
MW:34.08
EINECS:231-977-3
Product Categories:Inorganics;Chemical Synthesis;Compressed and Liquefied Gases;Synthetic Reagents;Chemical Synthesis;Specialty Gases;Synthetic Reagents
Mol File:7783-06-4.mol
HYDROGEN SULFIDE Structure
HYDROGEN SULFIDE Chemical Properties
Melting point −85 °C(lit.)
Boiling point −60 °C(lit.)
density dgas 1.19 (air = 1.00)
vapor density 1.19 (15 °C, vs air)
vapor pressure 252 psi ( 21 °C)
FEMA 3779 | HYDROGEN SULFIDE
Fp -17℃
storage temp. 2-8°C
pka7(at 25℃)
form colorless gas
OdorStrong rotten egg odor detectable at 0.001 to 0.1 ppm (mean = 0.0094 ppm); olfactory fatigue occurs quickly at high concentrations
explosive limit6%
Water Solubility 1g dissolves in H2O: 187mL (10°C), 242mL (20°C), 314 (30°C) [MER06]
Merck 13,4823
BRN 3535004
Stability:Stable. Highly flammable. May form explosive mixture with air. Note wide explosive limits. Incompatible with strong oxidizing agents, many metals. May react violently with metal oxides, copper, fluorine, sodium, ethanal.
CAS DataBase Reference7783-06-4(CAS DataBase Reference)
Safety Information
Hazard Codes F+,T+,N,F
Risk Statements 12-26-50-40-36/37-19-11
Safety Statements 9-16-36-38-45-61-28-26
RIDADR UN 1053 2.3
WGK Germany 2
RTECS MX1225000
Autoignition Temperature260 °C
HazardClass 2.3
ToxicityLC50 in mice, rats (ppm): 634, 712 (1 hr inhalation) (Vernot); LC50 in rats (ppm): 444 (4 hr inhalation) (Tansy)
MSDS Information
ProviderLanguage
SigmaAldrich English
HYDROGEN SULFIDE Usage And Synthesis
Chemical Propertiescolourless gas with strong odour of rotten eggs (odour threshold ca 0.2 ppt)
DefinitionChEBI: A sulfur hydride consisting of s single sulfur atom bonded to two hydrogen atoms. A highly poisonous, flammable gas with a characteristic odour of rotten eggs, it is often produced by bacterial decomposition of organic matter in the absence of oxygen.
UsesTo produce elemental sulfur and sulfuric acid; in manufacture of heavy water and other chemicals; in metallurgy; as analytical reagent.
Air & Water ReactionsHighly flammable; a flame can very easily flash back to the source of leak. Soluble in water to a maximum of 0.4% by mass at room temperature .
Reactivity ProfileHYDROGEN SULFIDE reacts as an acid and as a reducing agent. Explodes on contact with oxygen difluoride, bromine pentafluoride, chlorine trifluoride, dichlorine oxide, silver fulminate. May ignite and explode when exposed to powdered copper in oxygen [Mertz, V. et al., Ber., 1880, 13, p. 722]. May react similarly with other powdered metals. Ignites on contact with metal oxides and peroxides (barium peroxide, chromium trioxide, copper oxide, lead dioxide, manganese dioxide, nickel oxide, silver oxide, silver dioxide, thallium trioxide, sodium peroxide, mercury oxide, calcium oxide) [Mellor, 1947, vol. 10, p. 129, 141]. Ignites with silver bromate, lead(II) hypochlorite, copper chromate, nitric acid, lead(IV) oxide and rust. May ignite if passed through rusty iron pipes [Mee, A. J., School Sci. Rev., 1940, 22(85), p. 95]. Reacts exothermically with bases. The heat of the reaction with soda lime, sodium hydroxide, potassium hydroxide, barium hydroxide may lead to ignition or explosion of the unreacted portion in the presence of air / oxygen [Mellor, 1947, vol. 10, p. 140].
HazardHighly flammable, dangerous fire risk, explosive limits in air 4.3–46%. Toxic by inhalation, strong irritant to eyes and mucous membranes.
Health HazardExposure to very high concentrations causes immediate death. Also death or permanent injury may occur after very short exposure to small quantities. It acts directly upon the nervous system resulting in paralysis of respiratory centers.
Health HazardThe acute toxicity of hydrogen sulfide by inhalation is moderate. A 5-min exposure to 800 ppm has resulted in death. Inhalation of 1000 to 2000 ppm may cause coma after a single breath. Exposure to lower concentrations may cause headache, dizziness, and upset stomach. Low concentrations of H2S (20 to 150 ppm) can cause eye irritation, which may be delayed in onset. Although the odor of hydrogen sulfide is detectable at very low concentrations, it rapidly causes olfactory fatigue at higher levels, and therefore is not considered to have adequate warning properties. Hydrogen sulfide has not been shown to be carcinogenic or to have reproductive or developmental effects in humans
Fire HazardCompound is heavier than air and may travel a considerable distance to source of ignition and flash back. HYDROGEN SULFIDE forms explosive mixtures with air over a wide range. Also reacts explosively with bromine pentafluoride, chlorine trifluoride, nitrogen triiodide, nitrogen trichloride, oxygen difluoride, and phenyl diazonium chloride. When heated to decomposition, HYDROGEN SULFIDE emits highly toxic fumes of oxides of sulfur. Incompatible with many materials including strong oxidizers, metals, strong nitric acid, bromine pentafluoride, chlorine trifluoride, nitrogen triiodide, nitrogen trichloride, oxygen difluoride and phenyl diazonium chloride. Avoid physical damage to containers; sources of ignition; storage near nitric acid, strong oxidizing materials, and corrosive liquids or gases.
Fire HazardHydrogen sulfide is flammable in air in the range of 4.3 to 45.5% (NFPA rating = 4). Combustion products (sulfur oxides) are also toxic by inhalation. In the event of a hydrogen sulfide fire, stop the flow of gas if possible without risk of harmful exposure and let the fire burn itself out.
storagecylinders of hydrogen sulfide should be stored and used in a continuously ventilated gas cabinet or fume hood. Local fire codes should be reviewed for limitations on quantity and storage requirements.
Purification MethodsWash it, then pass the gas through a train of tubes containing saturated Ba(OH)2 (2x), water (2x), and dilute HCl [Goates et al. J Am Chem Soc 73 707 1951]. It is available in gas cylinders. HIGHLY POISONOUS.
IncompatibilitiesHydrogen sulfide is incompatible with strong oxidizers. It will attack many metals, forming sulfides. Liquid hydrogen sulfide will attack some forms of plastics, rubber, and coatings. H2S reacts violently with a variety of metal oxides, including the oxides of chromium, mercury, silver, lead, nickel, and iron.
Flammability and ExplosibilityHydrogen sulfide is flammable in air in the range of 4.3 to 45.5% (NFPA rating = 4). Combustion products (sulfur oxides) are also toxic by inhalation. In the event of a hydrogen sulfide fire, stop the flow of gas if possible without risk of harmful exposure and let the fire burn itself out.
Waste DisposalTo respond to a release, use appropriate protective equipment and clothing. Positive pressure air-supplied respiratory protection is required. Close cylinder valve and ventilate area. Remove cylinder to a fume hood or remote area if it cannot be shut off. Disposal Excess hydrogen sulfide should be returned to the manufacturer, according to your institution's waste disposal guidelines. For more information on disposal procedures, see Chapter 7 of this volume.
Tag:HYDROGEN SULFIDE(7783-06-4) Related Product Information
CHLOROCARBONYLSULFENYL CHLORIDE Triethylsilyl trifluoromethanesulfonate Tosylmethyl isocyanide PENTAFLUOROPHENYL SULFIDE 4-Fluorophenyl sulfone TrimethylSilyl Trifluoromethanesulfonate Ethyl trifluoromethanesulfonate Chloramine-T S-ETHYL TRIFLUOROTHIOACETATE Trifluoromethanesulfonic anhydride Diethylaminosulfur trifluoride N-Phenyl-bis(trifluoromethanesulfonimide) Trifluoromethanesulfonic acid tert-butyldimethylsilyl ester 2-Bromothioanisole Methyl trifluoromethanesulfonate 2,2,2-TRIFLUOROETHYL P-TOLUENESULFONATE BIS(2,4,5-TRICHLOROPHENYL) DISULFIDE 4-CHLOROPHENYL SULFOXIDE