Sodium Sulfide Nonahydrate Na2S x 9H2O [ CAS: 1313-84-4 ] - 100g

Sodium Sulfide Nonahydrate (Na₂S·9H₂O)
CAS Number: 1313-84-4
Sum Formula: Na₂S·9H₂O
Molar Mass: 240.18 g/mol
Appearance: Colorless to yellowish crystalline solid

Sodium sulfide nonahydrate is an inorganic compound used in various industrial sectors, primarily for its strong reducing and precipitating properties. It is commonly applied in manufacturing processes, water treatment, and material processing.

Chemical and Physical Properties

Density: Approximately 1.43 g/cm³
Melting Point: Decomposes upon heating
Solubility in Water: Highly soluble
Odor: Rotten egg-like odor due to the release of hydrogen sulfide (H₂S) upon contact with moisture

Applications

Chemical Manufacturing: Used as a reducing agent in organic synthesis and in the production of sulfur-containing compounds and dyes.

Leather Processing: Employed in the dehairing stage of leather tanning.

Wastewater Treatment: Utilized to precipitate heavy metals from industrial effluents.

Pulp and Paper Industry: Applied in the kraft pulping process as part of chemical recovery.

Safety

Signal Word: Danger

Hazard Statements:
H302: Harmful if swallowed.
H311: Toxic in contact with skin.
H314: Causes severe skin burns and eye damage.
H410: Very toxic to aquatic life with long-lasting effects.

Precautionary Statements:
P260: Do not breathe dust or mist.
P264: Wash skin thoroughly after handling.
P270: Do not eat, drink, or smoke when using this product.
P273: Avoid release to the environment.
P280: Wear protective gloves, protective clothing, eye protection, and face protection.
P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor if you feel unwell.
P301+P330+P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
P310: Immediately call a POISON CENTER or doctor.
P322: Specific measures (see supplemental first aid instructions on this label).
P361: Take off immediately all contaminated clothing.
P363: Wash contaminated clothing before reuse.
P391: Collect spillage.
P405: Store locked up.
P501: Dispose of contents/container in accordance with local/regional/national/international regulations.

First Aid Measures

Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek immediate medical attention.

Skin Contact: Take off immediately all contaminated clothing. Rinse skin with water or shower. Seek immediate medical attention.

Inhalation: Remove person to fresh air and keep comfortable for breathing. Seek immediate medical attention.

Ingestion: Rinse mouth. Do not induce vomiting. Immediately call a POISON CENTER or doctor.

Handling and Storage

Storage Conditions: Store locked up in a tightly closed container in a cool, dry, well-ventilated place. Protect from moisture.

Handling Precautions: Avoid breathing dust or mist. Use only in a well-ventilated area. Wear appropriate personal protective equipment. Avoid release to the environment.