Supply even Haimeng study Industrial Co., preservative sodium hydrosulfite

Haimeng study Industrial Co., the manufacturer of high-quality sodium hydrosulfite, also known as sodium hydrosulfite, is a white sand-like crystals or light yellow powder chemicals, melting point 300 ℃ (decomposition), the ignition temperature of 250 ℃, insoluble in ethanol, soluble in sodium hydroxide solution, reacts violently with water and burns. Chinese chemical name: sodium dithionite dithionite chemical structural formula dithionite formula [1] English name of chemicals: sodium hyposulfite Chinese name 2: Sodium hydrosulfite English name 2: sodium dithionite Technical Manual Code: 482 CAS No.: 7775 -14-6; [2] 7631-94-9; [3] EINECS No. 231-890-0 [4] formula: Na2S2O4 Molecular Weight: 174.11 Hazardous components: sodium dithionite main ingredients: pure [5-6] 2 Physical properties of sodium hydrosulfite is a Class I flammable when wet, also known as hypo. Commodities containing water of crystallization (Na2S2O4.2H2O) and non-crystalline water (Na2S2O4) two kinds. The former is white fine crystalline, which as a pale yellow powder. The relative density of 2.3-2.4, red hot decomposition, can be dissolved in cold water, hot water decomposition, soluble in ethanol. 7775-14-6 1. Appearance: White sand-like crystals or yellowish powder 2. Melting point (℃): 52 ~ 55 (exploded) 3. Boiling point (℃): 130 (decomposition) The relative density (water = 1) : 2.1 to 2.2 5. The ignition temperature (℃): 250 [5] 6. Solubility: soluble in water, soluble in ethanol. [2] 7631-94- 1. Properties: white crystalline powder. 1. Relative density: 2.3 to 2.4 3. Solubility: easily soluble in water, soluble in alcohol. [3] 3 solution chemically unstable nature, a strong reduction, are strong reducing agents. Exposed to the air easily absorb oxygen and oxidation, but also easy to absorb moisture and heat deterioration, and can capture oxygen in the air and emit pungent smell agglomeration. Formula absorb oxygen in the air: 2Na2S2O4 + O2 + H2O = 4NaHSO3 or Na2S2O4 + O2 + H2O = NaHSO3 + NaHSO4 heating dithionite or contact the fire will cause a fire, self-ignition point 250 ℃. In contact with water can release a lot of hot sulfur dioxide gas and flammable vapors and cause severe burning, the case of an oxidant, a small amount of water or moist air to absorb heat, causing risk tobacco combustion, or explosion. Dithionite toxic to the eyes, respiratory mucous membranes, which are widely used to restore the textile dyeing industry, reducing cleaning, printing and bleaching and used as silk, wool, nylon and other fabric bleach, because it does not contain heavy metals, bleached fabric color is very bright after, easy to fade. In various substances, it can also be used for food bleach, such as gelatin, sugar, candied fruit, and soap, animals (plants) oils, bamboo, clay of bleaching. It can also be used in organic synthesis, such as dyes, as a reducing agent in the production of drugs or bleach, sodium hydrosulfite is the most suitable wood pulp and paper bleaching agent. The main purpose of the insurance powder is widely used to restore the textile dyeing industry, reduction cleaning, printing and bleaching and used as silk, wool, nylon fabric, such as bleach, because it does not contain heavy metals, bleached after the fabric bright color, easy to fade. In various substances, sodium hydrosulfite bleach can be used for food, such as gelatin, sugar, honey, etc., soap, animals (plants) oils, bamboo, clay of bleaching. Hydrosulfite can also be used in organic synthesis, such as dyes, as a reducing agent in the production of drugs or bleach, it is the most suitable wood pulp and paper bleaching agent. And it can be a lot of heavy metal ions such as Pb2 + in water treatment and pollution control, Bi3 + and so reduced to metal, can be used to preserve food and fruit. However, due to the presence of sodium hydrosulfite many dangerous, it's many uses tend to use more secure, easy storage and transportation of thiourea dioxide substitution. 7775-14-6 1. hypo more intense than reducing sulfite, reducing and bleaching of the strongest in sulfites bleach. China provides for candied fruit, glucose, sugar, sugar, caramel, candy, liquid glucose, dried fruit, dried vegetables, noodles, bamboo shoots, mushrooms and canned mushrooms, maximum use of 0.40g / kg. Residual amount of potato starch (as SO2 meter) ≤0.05gkg. Strong reducing agent capable of reducing a lot of salt to metallic. Analysis of nitrogen, ammonia and ammonium bicarbonate desulfurization solution. Polarographic development. Bleach. 2. widely used in dyeing industries, such as cotton fabric dyeing auxiliary and silky fabric bleach. Also used in medicine, mineral processing, copperplate printing. The paper industry as a bleaching agent. Food grade product is used as a bleaching agent, preservatives and antioxidants. 3. The light used in soaps, oily esters, pulp bleaching. The chemical industry for the manufacture Rongalite, sodium thiosulfate, thiourea, thiosulfate benzoic acid, six O VI (Medicine), synthetic dyes, but also for copperplate printing and analytical reagent. The printing and dyeing industry as a reducing agent, silk, wool bleaching agents, but also for the pharmaceutical industry, mineral, thiourea and synthetic sulfides and the like. [2] 7631-94-9 widely used in printing and dyeing industry, such as cotton fabric dyeing auxiliary and silky fabric bleach. Also used in medicine and mineral processing, copperplate printing. The paper industry as a bleaching agent. Food grade product is used as a bleaching agent and preservatives, antioxidants. Haimeng study [3] on Industrial Co., Ltd. integrity management, welcomed the new and old customers call to discuss! 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