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Sodium sulfide export packaging requirements and required documents
Packaging: Sodium sulfide belongs to Class 8 corrosive dangerous goods, UN1849, and the packaging needs to be Class II. Clear and durable dangerous goods labels, including corrosive labels, and then GHS labels must be affixed on the packaging. Each package must be affixed. Documents required for ...Read more -
The difference between yellow and red sodium sulfide flakes
1. Appearance colorSodium sulfide yellow tablets: usually appear yellow or light yellow, and the color is brighter.Sodium sulfide red flakes: mostly red or dark brown, relatively dark in color.2.Chemical compositionSodium sulfide yellow tablets: After more rigorous purification treatment, the imp...Read more -
Things to note when shipping sodium hydrosulfide 70% flakes
1. Dangerous goods classification and transportation requirements: Sodium hydrosulfide belongs to Class 6.1+8 dangerous goods, and its UN code is 2922. 2. Packaging requirements: The packaging of sodium hydrosulfide must comply with the dangerous goods transportation standards, and the packaging ...Read more -
Sodium sulfide (Na2S) is mainly used as a sulfur source and reducing agent in the synthesis of sulfur dyes.
1. Baking method (dry process)Raw material selectionUse aromatic amines, phenols or nitro compounds mixed with sulfur or sodium polysulfide.Reaction conditionsContinue heating and melting at a high temperature of 200~250℃, and stir to fully vulcanize the raw materials until the product shows the ...Read more -
What are the safety considerations of sodium sulfide in mining?
Hazardous Properties Sodium sulfide is corrosive and releases toxic hydrogen sulfide (H₂S) gas upon contact with acids or moisture, posing risks of respiratory irritation, burns, and environmental contamination. Protective Measures Personal Protective Equipment (PPE): Chemical-resistant gl...Read more -
Main Applications of Sodium Sulfide in Mining and Mineral Processing
Sodium sulfide (Na₂S) plays multiple roles in mining and mineral processing due to its chemical properties, serving as a critical reagent. Below are its specific applications and mechanisms: I. Depressant for Sulfide Ore Flotation Inhibition of Sulfide Minerals High doses of sodium sulfide can...Read more -
Caustic soda, scientifically known as sodium hydroxide, is a strong alkali with strong corrosiveness. It is widely used in industry, agriculture, life and other fields:
I.Industry1. Papermaking industry: used to process wood raw materials, remove impurities such as lignin, separate cellulose, and produce high-quality paper. 2. Textile printing and dyeing industry: Before dyeing cotton fabrics, the fabrics are treated with caustic soda solution to remove impurit...Read more -
The main function of polyacrylamide
1. Wastewater treatmentFlocculation and precipitation: Polyacrylamide has a high molecular chain structure, which can form larger flocs of suspended particles in sewage through adsorption and bridging, accelerate the precipitation of particles, and thus achieve solid-liquid separation to purify s...Read more -
Application of Sodium Sulfide in Mixed Concentrate Depressant Removal
I. Mechanism of Action1.Removal of Collector Coatings: Sodium sulfide (Na₂S) exhibits strong adsorption properties, effectively desorbing xanthate-type collectors from mineral surfaces. This disrupts the bond between collectors and minerals, achieving depressant removal.2.Inhibition of Resid...Read more -
Sodium sulfide (Na₂S) has the following core applications in the dyeing and printing industry
Sodium sulfide (Na₂S) has the following core applications in the dyeing and printing industry: 1.Dyeing AuxiliaryActs as a solvent for sulfur dyes, promoting uniform dispersion and penetration of dyes into fibers, improving dyeing effectiveness and color fastness. 2.Raw Material for Sulfur Dye...Read more -
Sodium hydrosulfide (NaHS) is mainly used as a reducing agent and dechlorinating agent in the printing and dyeing industry.
1. Reduction dissolution of sulfur dyesMechanism of action: Sulfur dyes are insoluble in water and need to be reduced to soluble leuco forms under alkaline conditions before they can be adsorbed on fibers. Sodium hydrosulfide (NaHS), as a strong reducing agent, can replace traditional sodium sulf...Read more -
The use of sodium hydrosulfide solid (70% content) in mineral processing is mainly reflected in its role as a sulfiding agent and reducing agent.
1. Sulfidation in copper ore dressingSodium hydrosulfide 70% flakes is mainly used in copper ore dressing to convert copper oxide or metallic copper into copper sulfide (CuS) or cuprous sulfide (Cu2S). This process is achieved through the strong reducing property of sodium hydrosulfide, whi...Read more
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