Schwefligesure Produkt Beschreibung

Sulfurous Acid Struktur
7782-99-2
  • CAS-Nr.7782-99-2
  • Bezeichnung:Schwefligesure
  • Englisch Name:Sulfurous Acid
  • Synonyma:Schwefligesure
    Hso3;Hso3-;So3-2;sulfurous;SULFUROUS ACID;SULPHUR DIOXIDE;SULPHUROUS ACID;schwefligesaure;Schweflige Sure;SULFUROUS ACID 6%
  • CBNumber:CB6160852
  • Summenformel:H2O3S
  • Molgewicht:82.08
  • MOL-Datei:7782-99-2.mol
Schwefligesure physikalisch-chemischer Eigenschaften
  • Dichte :1.03 g/mL at 25 °C(lit.)
  • Dampfdichte :2.3 (vs air)
  • pka :1.92(at 25℃)
  • Aggregatzustand :Liquid
  • Farbe :Colorless
  • Wasserlöslichkeit :Miscible with water.
  • Sensitive  :Air Sensitive
  • Merck  :14,8976
  • Stabilität: :Stable. Incompatible with strong bases.
  • CAS Datenbank :7782-99-2(CAS DataBase Reference)
Sicherheit
  • Kennzeichnung gefährlicher :C,Xn
  • R-Sätze: :20-34-36/38
  • S-Sätze: :26-36/37/39-45
  • RIDADR  :UN 1833 8/PG 2
  • WGK Germany  :1
  • RTECS-Nr. :WT2775000
  • F  :10-23
  • TSCA  :Yes
  • HazardClass  :8
  • PackingGroup  :II
  • HS Code  :28111990

Sulfurous Acid Chemische Eigenschaften,Einsatz,Produktion Methoden

  • R-Sätze Betriebsanweisung: R20:Gesundheitsschädlich beim Einatmen.
    R34:Verursacht Verätzungen.
  • S-Sätze Betriebsanweisung: S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
    S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
    S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
  • Beschreibung Sulfurous Acid is a weak and unstable inorganic acid, which is considered an aqueous solution of sulfur dioxide in water. It is formed theoretically by burning sulfur to produce sulfur dioxide, which is then reacted with water. However, there is no evidence that sulfurous acid exists in solution, while the molecules of which has been detected in the gas phase, since the reaction is reversible and the acid readily decomposes back into the reactants. Sulfurous acid is not usually available in its acid form, but more commonly prepared as its sodium or potassium salts.
    Sulfurous acid and its salts are commonly applied as powerful reducing agents and disinfectant agents due to its strong reducibility. It is also considered as a mild bleaching agent especially for applications having chlorine sensitive materials. Besides, Sulfurous acid is a food additive listed on the EAFUS food Additive Database (Jan. 2001).
  • Chemische Eigenschaften colourless liquid
  • Verwenden Dental bleach.
  • Definition A weak acid found only in solution, made by passing sulfur(IV) oxide into water. The solution is unstable and smells of sulfur(IV) oxide. It is a reducing agent, converting iron(III) ions to iron(II) ions, chlorine to chloride ions, and orange dichromate(VI) ions to green chromium(III) ions.
  • Allgemeine Beschreibung Sulfurous acid, H2S03, is an unstable, water-soluble, colorless liquid with a pungent burning sulfur odor. Corrosive to metals and tissue. It is derived from absorption of sulfur dioxide( S02) in water.Reagent grade sulfurous acid contains about 6% sulfur dioxide in solution. Sulfurous acid is a strong reducing agent.It is readily oxidized to sulfuric acid and is itself reduced to hydrogen sulfide by zinc and dilute sulfuric acid. Sulfurous acid is used in the synthesis of medicines and chemicals, in the manufacture of paper and wine, in brewing, in metallurgy, in ore flotation, as a bleach and analytical reagent, and for refining of petroleum products.
  • Air & Water Reaktionen Soluble in water with release of heat.
  • Reaktivität anzeigen Colorless, corrosive, moderately toxic liquid. When heated to decomposition SULFUROUS ACID emits toxic fumes of oxides of sulfur [Lewis, 3rd ed., 1993, p. 1196].
  • Hazard Toxic by ingestion and inhalation, strong irritant to tissue.
  • Health Hazard TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
  • Brandgefahr Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
  • Industrielle Verwendung Sulfurous acid (H2SO3) is usually marketed as liquid SO2. The bulk of SO2 is produced from off-smelter gases. Although handling of SO2 liquid requires special equipment, it is frequently used as a pH regulator and depressant, primarily during the treatment of complex sulfide ores. SO2 is largely used in North American operations as a pyrite depressant and for the depression of galena during copper/lead separation.
  • Sicherheitsprofil A poison by ingestion and inhalation. A corrosive irritant to skin, eyes, and mucous membranes. Human systemic effects by ingestion: nausea or vomiting, hypermotility, diarrhea, and othergastrointestinal effects. When heated to decomposition it emits highly toxic fumes ofSOx.
  • Einzelnachweise https://en.wikipedia.org/wiki/Sulfurous_acid
    http://printwiki.org/Sulfurous_Acid
    http://www.softschools.com/formulas/chemistry/sulfurous_acid_uses_properties_structure_formula/242/
    https://pubchem.ncbi.nlm.nih.gov/compound/Sulfurous_acid#section=Top
    http://www.chemistrylearner.com/sulfurous-acid.html
Sulfurous Acid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Schwefligesure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
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7782-99-2, Sulfurous Acid Verwandte Suche:
  • SULFUROUS ACID 6%
  • schwefligesaure
  • sulfurdioxidesolution
  • Sulfurous anhydride solution
  • Sulfurous acid, 6.0% SO
  • Sulfurous acid, for analysis
  • sulfurous
  • SULPHUROUS ACID
  • SULPHUR DIOXIDE
  • SULFUROUS ANHYDRIDE
  • SULFUROUS ACID
  • Sulfur dioxcide solution
  • SULFUROUS ACID A.C.S. REAGENT
  • SULFUR DIOXIDE SOLUTION, 5-6% IN WATER
  • SulfurourAcidH2So3
  • Sulfurousacid,ACS,6.0%SO2min
  • SULFUROUS ACID SOLUTION
  • SULFUROUS ACID, 6% REAGENT (ACS)
  • sulfurous acid, acs
  • SULFUROUSACID,REAGENT,ACS
  • Schweflige Sure
  • Sulfurous Acid, 6-9%
  • Sulfurous Acid, Reagent
  • Sulfurous acid, Sulfurous anhydride
  • Sulfurous acid, ACS, 6.0% SO<sub>2</sub> min
  • Hso3
  • Hso3-
  • So3-2
  • -
  • Sulfurous acid, ACS SO min
  • Sulfur dioxide solution,Sulfurous acid, Sulfurous anhydride
  • Sulfur dioxide solut
  • SULFUROUS ACID 5-6% SO2 FOR ANALYSIS EMS
  • Sulfur dioxide solution ACS reagent, >=6%
  • Sulfurous acid4x500ml
  • Sulfurous acid, SO2 6.0% min., ACS
  • 7782-99-2
  • H2SO3
  • Inorganics