CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Sodium sulfide, anhydrous is a yellow to brick red crystalline mass or fused solid with an odor of rotten eggs. If exposed to moist air it is liable to spontaneous heating and may cause ignition of nearby combustible material. It absorbs moisture from the air. |
|---|---|
| Color/Form | CLEAR CRYSTALS; YELLOW OR BRICK-RED LUMPS OR FLAKES |
| Odor | Rotten eggs |
| Boiling Point | Very high (USCG, 1999) |
| Melting Point | 1180 °C (IN VACUO) |
| Solubility | Slightly soluble in alcohol; insoluble in ether. |
| Density | 1.856 at 68 °F (USCG, 1999) - Denser than water; will sink |
| LogP | -3.5 |
| Stability/Shelf Life | UNSTABLE |
| Autoignition Temperature | >480 °C |
| Decomposition | When heated to decomp ... emits toxic fumes of /sulfur oxides and disodium oxide/. |
| pH | AQ SOLN ARE STRONGLY ALKALINE |
| Other Experimental Properties | EXTREMELY HYGROSCOPIC |
| Chemical Classes | Other Classes -> Sulfur Compounds |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H251:Self-heating substances and mixtures H290:Corrosive to Metals H314:Skin corrosion/irritation H400:Hazardous to the aquatic environment, acute hazard |
| Precautionary Statement Codes |
P235:Keep cool. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. 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. |
COMPUTED DESCRIPTORS
| Molecular Weight | 79.06 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 78.95943477 g/mol |
| Monoisotopic Mass | 78.95943477 g/mol |
| Topological Polar Surface Area | 1 Ų |
| Heavy Atom Count | 3 |
| Formal Charge | 1 |
| Complexity | 2.8 |
| 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 | 3 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Sodium sulfide, anhydrous is a yellow to brick red crystalline mass or fused solid with an odor of rotten eggs. If exposed to moist air it is liable to spontaneous heating and may cause ignition of nearby combustible material. It absorbs moisture from the air.