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13465-07-1

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CAS No.: 13465-07-1
Name: HYDROGEN DISULFIDE
Molecular Structure:
Molecular Structure of 13465-07-1 (HYDROGEN DISULFIDE )
Formula: H2S2
Molecular Weight: 66.14
Safety: Colorless liquid. D: 1.334 @ 20°, mp: −89.6°, bp: 70.7°. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizers. Decomposes violently in reaction with alkalies. When heated to decomposition it emits toxic fumes of SOx. See also SULFIDES.
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Chemistry

Product Name: Hydrogen disulfide
Synonyms of Hydrogen disulfide (CAS NO.13465-07-1) : Disulfan ; Disulphane ; Hydrogen disulfide ; Dihydrogen disulfide
CAS NO: 13465-07-1
Molecular Formula:H2S2
Molecular Weight :66.1459
Molecular Structure :
Index of Refraction: 1.542
Surface Tension: 33.1 dyne/cm
Density: 1.168 g/cm3
Enthalpy of Vaporization: 29.93 kJ/mol
Boiling Point: 70.7 °C at 760 mmHg
Vapour Pressure: 139 mmHg at 25°C

Uses

  Hydrogen disulfide (CAS NO.13465-07-1) has been described as "having a severe and irritating odour" that is similar to camphor or sulfur chloride, causing "tears and a smarting sensation in the nostrils". If it is present in high concentrations, it can cause dizziness, disorientation and ultimately unconsciousness.

Production

 Hydrogen disulfide (CAS NO.13465-07-1) can be synthesised by dissolving alkali or alkali earth metal polysulfides in water. When the solution is mixed with concentrated hydrochloric acid at −15 °C, a yellow oil consisting a mixture of polysulfanes (H2Sn) will pool below the aqueous layer. Fractional distillation of this oil gives hydrogen disulfide separate from any other polysulfides (mostly trisulfide).

Hydrogen disulfide readily decomposes under ambient conditions to hydrogen sulfide and sulfur. In organosulfur chemistry, hydrogen disulfide adds to alkenes to give disulfides and thiols.

Safety Profile

Colorless liquid. D: 1.334 @ 20°, mp: −89.6°, bp: 70.7°. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizers. Decomposes violently in reaction with alkalies. When heated to decomposition it emits toxic fumes of SOx. See also SULFIDES.