| Identification | |
| Name: | Mercapto |
| Synonyms: | Hydrogenmonosulfide; Hydrogen sulfide (HS); Hydrogen sulfide radical; Hydrogen sulfideradical (HS); Mercaptan free radical; Mercapto radical; Monohydrogen sulfide;Sulfhydryl; Sulfide radical (HS); Sulfur hydride (SH); Sulfur monohydride;Thiohydroxyl |
| CAS: | 13940-21-1 |
| EINECS: | 231-197-3 |
| Molecular Formula: | HS |
| Molecular Weight: | 0 |
| InChI: | InChI=1/HS/h1H |
| Molecular Structure: |  |
| Properties | |
| Flash Point: | °C |
| Boiling Point: | °Cat760mmHg |
| Density: | g/cm3 |
| Solubility: | INSOL IN WATER; SPARINGLY SOL IN ALC, ETHER 1 g/2 ml carbon disulfide About 2.4% in benzene @ 30 deg C; more at higher temp SOL IN TOLUENE 38.5% DISSOLVES IN LIQ AMMONIA (ANHYDR) @ -78 DEG C 2.65% DISSOLVES IN ACETONE @ 25 DEG C 9.1% DISSOLVES IN METHYLENE IODIDE @ 10 DEG C ABOUT 1.5% DISSOLVES IN CHLOROFORM @ 18 DEG C 0.38% IN ANHYDR LANOLIN @ 45 DEG C (PRECIPITATED) /PHARMACEUTICAL/< |
| Flash Point: | °C |
| Color: | Alpha-sulfur, orthorhombic cyclooctasulfur. Amber-colored crystals. When heated becomes opaque owing to the formation of monoclinic sulfur. Beta-sulfur, monoclinic cyclooctasulfur. Opaque, light-yellow, brittle, needle-like crystals. Sublimed & washed sulfur are in form of fine, yellow crystalline powder /Pharmaceutical/ Precipitated sulfur is in form of very fine, pale yellow, amorphous or microcrystalline powder /Pharmaceutical/ Yellow solid or amber-colored molten liquid. Pure sulfur exists in two stable crystalline forms, alpha and beta, and at least two amorphous (liquid) forms. Alpha-sulfur: rhombic, octahedral, yellow crystals; beta-sulfur: monoclinic, prismatic, pale-yellow crystals. |
| Safety Data | |
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