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What will happen if sodium hydrosulfite is exposed to the air?
When exposed to air, sodium hydrosulfite readily absorbs oxygen and oxidizes. It also absorbs moisture, generating heat and leading to deterioration. It can clump together while absorbing atmospheric oxygen and emit a pungent acidic odor. Na₂S₂O₄ + 2H₂O + O₂ → 2NaHSO₄ + 2[H] Heating or exposure...Read more -
What are the physical properties of sodium hydrosulfite?
Sodium hydrosulfite Physical Properties Sodium hydrosulfite is classified as a Grade 1 moisture-sensitive flammable substance, also known as sodium dithionite. It is commercially available in two forms: hydrated (Na₂S₂O₄·2H₂O) and anhydrous (Na₂S₂O₄). The hydrated form appears as fine white cryst...Read more -
What are the advantages of using sodium hydrosulfite as a reducing agent?
Reducing Agent (Rongalite) Chemical Name: Sodium hydrosulfite Compared to oxidizing agents, Rongalite causes much less damage to fabrics. It can be used on textiles made of various fibers without causing harm, hence the name “Rongalite” (meaning “safe powder” in Chinese)...Read more -
How should enterprises manage sodium hydrosulfite?
Requiring enterprises to implement a dual-personnel, dual-control system for sodium hydrosulfite. Firstly, the warehouse must have designated management personnel and implement a dual-personnel, dual-lock system. Secondly, the procurement officer must verify the quantity, quality, and relevant sa...Read more -
What are the safety supervision and management requirements for enterprises using and storing sodium sulfite (insurance powder)?
Safety Supervision and Management of Enterprises Using and Storing Sodium Hydrosulfite (Insurance Powder) (1) Requiring enterprises using and storing sodium hydrosulfite to establish and implement hazardous chemical safety management systems. Enterprises using and storing sodium hydrosulfite are...Read more -
How many methods are there for producing sodium sulfide?
There are two main methods for producing sodium sulfide. The Glauber’s salt method involves mixing sodium sulfate and coal powder in a 1:0.5 ratio and heating them in a reverberatory furnace to 950°C, with continuous stirring to prevent clumping. The by-product hydrogen sulfide gas must be ...Read more -
Industrial use of sodium sulfide involves more complex scenarios.
Industrial use of sodium sulfide involves more complex scenarios. In dye workshops, workers operate in chemical-resistant suits because sodium sulfide releases toxic gases at high temperatures. Wastewater treatment plants often use it to precipitate heavy metals, requiring strict control of the f...Read more -
How to handle sodium sulfide in laboratory environment?
In laboratory settings, extra caution is required when handling sodium sulfide. Before use, safety goggles and rubber gloves must be worn, and operations are best conducted within a fume hood. Once the reagent bottle is opened, it should be immediately sealed in a plastic bag to prevent absorptio...Read more -
What kind of particles is sodium sulfide?
Sodium sulfide appears as white or light yellow crystalline granules at room temperature, emitting a smell similar to rotten eggs. While it may feel like ordinary salt grains, it should never be handled directly with bare hands. Upon contact with water, it becomes slippery and can cause skin irri...Read more -
What are the hazardous characteristics of sodium sulfide?
Sodium sulfide Packaging: 25 kg PP woven bags with double-layer PE plastic liners. Sodium sulfide Storage and Transportation: Store in a well-ventilated, dry area or under an asbestos shelter. Protect from rain and moisture. Containers must be tightly sealed. Do not store or transport together wi...Read more -
What are the industries of sodium sulfide uses?
Sodium Sulfide uses: Used in the dye industry for producing sulfur dyes, serving as a raw material for Sulfur Black and Sulfur Blue. Employed in the printing and dyeing industry as an aid for dissolving sulfur dyes. Used in the leather industry for dehairing raw hides through hydrolysis and in pr...Read more -
What are the hazardous characteristics of sodium sulfide?
Prolonged consumption of water with high sulfide levels may result in dulled taste perception, loss of appetite, weight loss, poor hair growth, and in severe cases, exhaustion and death. Sodium sulfide Hazard Characteristics: This substance may explode upon impact or rapid heating. It decomposes ...Read more