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1313-82-2

1313-82-2 structural image
Product Name: Sodium sulfide
Formula: Na2S
Synonyms: Disodium sulfide
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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.

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