Sodium hydrosulfide is a potential chemical

Sodium Hydrosulfite, also know as Sodium Dithionite had been developed at the beginning of the 20th century and was first applied for textile printing. Due to structural change in the textile industry, the importance of the application for the bleaching of wood pulp in the paper industry increased continuously. For these applications, BrüggemannChemical offers the products Sodium Hydrosulfite S, N and F.

Sodium Hydrosulfite(CAS NO:16721-80-5)is a colorless needle-like crystal, easy to be deliquesced, it will decomposed and release hydrogen disulfide at its melting point, soluble in water and alcohols, its water solution is strongly alkaline, it will generate hydrogen disulfide when reacting with acids. The industrial good is solution, orange or yellow, bitter taste.

Thousands of tons of NaHS are produced annually. Its main uses are in paper manufacture as a makeup chemical for sulfur used in the Kraft process, as a flotation agent in copper mining where it is used to activate oxide mineral species, and in the leather industry for the removal of hair from hides.

As strong and reactive reducing agents, selected types of Sodium Hydrosulfite are also used in special applications for instance in the reduction of heavy metals such as chromium, manganese, molybdenum or tungsten in waste water. For this application we offer the product Sodium Hydrosulfite S.

Sodium Hydrosulfite, is the only industrially important salt of dithionous acid (H2S2O4), which has not been isolated. The importance of sodium dithionite lies in its power full reducing capacity, which allows, for example, vat dyes to be reduced at room temperature. It is also used as a bleaching agent, mainly in the textile and paper industries but also in the leather, food and kaolin clay industries.

The ease of solubility makes this chemical a highly useful reducing agent in dyeing industry. As compared to other water insoluble chemicals, sodium dithionate is also known to eliminate any residual oxide, unattended pigments as well as excess dye, thus improving the overall quality of the product. Sodium Hydrosulfite also finds application in biological sciences as it is used a reagent to lower the redox potential of chemical reactions being carried out in the laboratories.

Although, not that commonly, but it is also used as a developing agent in photography industry. Because of its ability to enhance the solubility of metal ions, it is also used as a chelating agent in metal extractions. Sodium Hydrosulfite is used as chemical agent for environmental improvement, water treatment and gas purification processes. It is also used in the production of commercial bleach, used for the treatment of leather, cotton, wool, paper pulp and chrome tanning.

So, now we know what all roles that this versatile chemical can play in its various forms (solid and solution forms). Looking at the above mentioned facts it won’t be wrong to say that sodium hydrosulfite has emerged as a chemical work-horse for multifarious industrial purposes and will continue to function as the same in the times to come as well.

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Potential health effects of sodium hydrosulfide

Sodium hydrosulfide is the chemical compound with the formula NaHS. This compound is the product of the half neutralization of hydrogen sulfide with sodium hydroxide. Sodium hydrosulfide is a useful reagent for the synthesis of organic and inorganic sulfur compounds, sometimes as a solid reagent, and more often as an aqueous solution.Solid NaHS is colorless and typically smells like H2S due to hydrolysis by atmospheric moisture. 

Alternatively, in place of Sodium hydrosulfide(CAS NO.:16721-80-5), H2S can be treated with an organic amine to generate an ammonium salt. Solutions of HS- are sensitive to oxygen, converting mainly to polysulfides, indicated by the appearance of yellow.

Sodium hydrosulfide is white, in the liquid state - black. It melts without decomposition, on further heating decomposes. Readily soluble in cold water (hydrolysis on the anion). Decomposed in the boiling solution. Neutralized by the alkali (as opposed to NH4HS). Attaches sulfur. A typical reducing agent, is oxidized by atmospheric oxygen.

Sodium Hydrosulfide is a solid consisting of colorless needles to lemon-yellow flakes. Sodium Hydrosulfide releases hydrogen sulfide in contact with moisture in the air, which smells like rotten eggs. The odor cannot be relied upon as a warning property as hydrogen sulfide paralyzes the sense of smell above 100 ppm. Harmful or fatal if swallowed. Corrosive to skin, eyes and respiratory tract. Can cause permanent damage to eyes. Although this material does not readily ignite, it is combustible and can ignite if subjected to very high temperatures. Avoid contact with paper, wood or other combustible materials. Fine dust or powder may form explosive mixtures in air. Fire may produce irritating, corrosive and/or toxic vapors of hydrogen sulfide and sulfur dioxide. Avoid contact with moisture and acids. Firefighters should use full protective equipment and clothing. 

Potential Health Effects: Eyes 
Sodium Hydrosulfide is corrosive. Eye contact may cause severe irritation, pain, redness, blurred vision or burns which are slow to heal. Burns may result in blindness. Due to release of hydrogen sulfide upon contact with water, low level eye exposure (less than 10 ppm hydrogen sulfide) may cause scratchiness, inflammation, irritation. Higher concentrations (50 ppm hydrogen sulfide) can cause intense tearing, blurring of vision, extreme sensitivity to light, and rings around light. These symptoms normally disappear when exposure ends, but severe eye exposure to hydrogen sulfide can cause permanent damage to eye tissue. 

Potential Health Effects: Skin 
Sodium Hydrosulfide is corrosive. Depending on the duration of skin contact, skin overexposures may cause irritation or chemical burns resulting in blistering of skin and possible scarring. Repeated skin overexposures can result in dermatitis. 

Potential Health Effects: Ingestion 
Harmful or fatal if swallowed. Corrosive. Ingestion of Sodium Hydrosulfide can cause burns to lips, tongue, throat and stomach, abdominal pain, nausea, vomiting and diarrhea. Sodium Hydrosulfide can react with acid in the stomach to release hydrogen sulfide. Effects would be as described under “inhalation”.

Potential Health Effects: Inhalation 
May irritate the nose, throat and respiratory tract. Symptoms can include sore throat, coughing and shortness of breath. Inhalation of high concentrations, or prolonged inhalation can lead to a build-up of fluid in lungs (pulmonary edema), which can be fatal. Can react with moisture in the air to form toxic hydrogen sulfide. Low concentrations of hydrogen sulfide (50 ppm) can result in dryness and irritation of nose and throat, runny nose, cough, and shortness of breath. Higher concentrations (200-500 ppm) cause severe irritation as well as headache, nausea, vomiting, and dizziness. Extremely high concentration of hydrogen sulfide (500 ppm) can cause rapid unconsciousness and death. Severe exposures to hydrogen sulfide that do not lead to death may result in memory loss, paralysis of facial muscles or nerve damage.

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Sodium hydrosulfide instead of hydrogen sulfide

Sodium hydrosulfide is the chemical compound with the formula NaHS. It is the product of the half neutralization of hydrogen sulfide with sodium hydroxide. Sodium hydrosulfide is a useful reagent for the synthesis of organic and inorganic sulfur compounds, sometimes as a solid reagent, and more often as an aqueous solution. It is colorless and typically smells like H2S due to hydrolysis by atmospheric moisture. 

In contrast with sodium sulfide, Na2S, which is insoluble in organic solvents, NaHS, being a 1:1 electrolyte, is more soluble. Alternatively, in place of NaHS, H2S can be treated with an organic amine to generate an ammonium salt. Solutions of HS-are sensitive to oxygen, converting mainly to polysulfides, indicated by the appearance of yellow.

The sodium hydrosulfide(CAS NO.:16721-80-5) instead of hydrogen sulfide as the main raw material for production of sodium methyl mercaptide, as manufacturers of raw materials.

The environmental problems of sodium methyl mercaptide factories, especially the bad odor pollution damage to the environment, is sodium hydrosulfide manufacturers and sodium methyl mercaptide factory mainly face the problem. The hydrogen sulfide odor is a major source of odor pollution in the production process. Sodium hydrosulphide is raw material to produce hydrogen sulfide gas. Sodium hydrosulfide as main raw material, used in the production of sodium methyl mercaptide, is the main way of our country at present.Therefore, how to eliminate the production of sodium hydrosulfide production process the odor, become a key problem of manufacturers.

But the real use, sodium methyl mercaptide is our country and export of important basic chemical raw materials, it’s essential for other products. 

There are many local manufacturers boss, try various devices to hurry on the project soon, sodium hydrosulfide production caused by the improper disposal of hydrogen sulfide gas, causing adverse effects on the environment and human ecology. Now the authorities also to the project examination and approval, and harsh and hinder the project development.

Sodium hydrosulfide production sodium methyl mercaptide, is now the main production of domestic manufacturers. Domestic sodium hydrosulfide method manufacturers mainly concentrated in North China, such as Shandong, Hebei, Shanxi, Shandong, Zibo is the main area of concentration manufacturers sodium hydrosulfide method. South China existing sodium methyl mercaptide production factory, manufacturers, but the south area of the product for the use of large dosage, application of high-grade stability and bridging agent main synthesis, then most exported abroad. Therefore,  sodium hydrosulfide method of sodium methyl mercaptide very broad market prospects.


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