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Sodium sulfide, anhydrous
Description
Chemical Properties
· Formula : Na2S
· Formula weight : 78.04
· Melting Point : 950°
· Density : 1.856
· Sensitivity : Hygroscopic. Light Sensitive. Ambient temperatures.
· Form : Granular
· Solubility : Soluble in water. Decomposes in acid. Slightly soluble in alcohol. Insoluble in etherSoluble in water. Slightly soluble in alcohol. Insoluble in ether.
Applications
In organic chemicals, dyes rayon, leather and paper, in hydrometallurgy of gold ore, sulfiding oxidized lead and copper ores, and as an analytical reagentSodium sulfide is used mainly in the pulp and paper industry in the Kraft process. It serves as an oxygen scavenger agent in water treatment. Other applications include ore flotation, oil recovery, making dyes and detergents. In the leather processing industry, it is utilized for liming operation as an unhairing agent. It is also used in the textile industry as a bleaching and desulfurizing agent and as a dechlorinating agent in chemical photography for toning black and white photographs as well as metals precipitant. It plays an important role as a sulfonation and sulfomethylation agent in the chemical industry and in the production of rubber chemicals, sulfur dyes and other chemical compounds.
Notes
Moisture sensitive and hygroscopic. Incompatible with oxidizing agents, copper and zinc acids. Keep the container tightly closed in a dry and well-ventilated place
Other References:
· Merck : 14,8681
· UN# : UN1561
GHS Hazard and Precautionary Statements
Hazard Statements : H311-H302-H314-H400
Toxic in contact with skin.Harmful if swallowed.Causes severe skin burns and eye damage.Very toxic to aquatic life.
Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P361-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray.
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.Remove/Take off immediately all contaminated clothing.Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
위험 및 안전 코드
위험 문구 : 22-24-31-34-50
Harmful if swallowed.Toxic in contact with skin.Contact with acids liberates toxic gas.Causes burns.Very toxic to aquatic organisms.
안전 문구 : 26-36/37/39-45-61
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/safety data sheets.
· TSCA : 예
· RTECS : WE1905000
