CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Sodium hydrosulfide is a colorless to light yellow crystalline solid or fused mass. It is corrosive to skin and metal. Used in paper pulping, manufacturing dyes, and dehairing hides. |
|---|---|
| Color/Form | Rhombohedric-cubic crystals. White to colorless. |
| Odor | ODOR OF HYDROGEN SULFIDE |
| Boiling Point | 212 °F at 760 mmHg (approx.) (USCG, 1999) |
| Melting Point | 63 °F (USCG, 1999) |
| Solubility | SOL IN WATER, ALCOHOL, ETHER |
| Density | 1.3 at 59 °F (USCG, 1999) - Denser than water; will sink |
| Vapor Pressure | 49.12 mmHg (USCG, 1999) |
| LogP | -3.5 |
| Stability/Shelf Life | READILY HYDROLYZED IN MOIST AIR TO SODIUM HYDROXIDE & SODIUM SULFIDE |
| Decomposition | Decomposes to hydrogen sulfide and free alkali. |
| Corrosivity | Corrodes most metals. /Sodium Hydrosulfide Solution/ |
| Odor Threshold | Odor Threshold Low: 0.0047 [mmHg] Odor threshold from CHRIS |
| Other Experimental Properties | Needles of flakes, mp 55 °C. Completely and rapidly soluble in water, alcohol, ether /DIHYDRATE/. |
| Chemical Classes | Other Classes -> Sulfur Compounds |
SAFETY INFORMATION
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H228:Flammable solids H251:Self-heating substances and mixtures H302:Acute toxicity,oral H312:Acute toxicity,dermal H314:Skin corrosion/irritation H318:Serious eye damage/eye irritation H332:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
COMPUTED DESCRIPTORS
| Molecular Weight | 56.07 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 55.96966549 g/mol |
| Monoisotopic Mass | 55.96966549 g/mol |
| Topological Polar Surface Area | 1 Ų |
| Heavy Atom Count | 2 |
| Formal Charge | 0 |
| Complexity | 2 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 2 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Sodium hydrosulfide is a colorless to light yellow crystalline solid or fused mass. It is corrosive to skin and metal. Used in paper pulping, manufacturing dyes, and dehairing hides.