Quecksilberdithiocyanat

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H373：Kann die Organe schädigen bei längerer oder wiederholter Exposition.

  H410：Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

• Sicherheit

  P262：Nicht in die Augen, auf die Haut oder auf die Kleidung gelangen lassen.

  P273：Freisetzung in die Umwelt vermeiden.

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P314：Bei Unwohlsein ärztlichen Rat einholen / ärztliche Hilfe hinzuziehen.

MERCURIC THIOCYANATE Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R26/27/28:Sehr giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
  R32:Entwickelt bei Berührung mit Säure sehr giftige Gase.
  R33:Gefahr kumulativer Wirkungen.
  R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.

• S-Sätze Betriebsanweisung:

  S13:Von Nahrungsmitteln, Getränken und Futtermitteln fernhalten.
  S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
  S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
  S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
  S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.

• Beschreibung

  Mercury thiocyanate is a white, odorless powder. Molecular weight= 316.79; Freezing/Melting point=about 165℃ (decomposes). Slightly soluble in cold water.

• Chemische Eigenschaften

  Mercury thiocyanate is a white, odorless powder.

• Chemische Eigenschaften

  Mercuric thiocyanate is an inorganic chemical substance. It is a stable solid at room temperature, and depending upon the purity, it appears as odourless white crystalline powder or grey. It is insoluble in water and denser than water and sinks in water. The solubility in alcohol and boiling H2O and in KSCN solution is higher, in ether lower. Decomposes with swelling on heating to 165°C. On decomposition, mercuric thiocyanate releases hazardous substances such as cyanide vapours, vapours of mercury, oxides of nitrogen (NO, NO2), and oxides of sulphur (SO2, SO3). Mercury thiocyanate has limited uses in chemical synthesis.

• Verwenden

  Mercury(II) thiocyanate is used as a precursor to potassium tris(thiocyanato)mercurate(II) and cesium tris(thiocyanato)mercurate(II). It is also used in the determination of chloride ions in water by UV-visible spectroscopy. Further, it acts as a catalyst for the addition of thiocyanic acid to alkynes.

• Verwenden

  For Pharaoh's serpents (fireworks); intensifier in photography.

• Air & Water Reaktionen

  Insoluble in water.

• Reaktivität anzeigen

  MERCURIC THIOCYANATE decomposes into its elements at about 165°C. Burns readily in air to generate a coil of cohesive ash resembling a serpent (hence used in a firework: Pharaoh's serpents). Swells up to many times its original volume if heated [USCG, 1999]. Soluble in dilute hydrochloric acid [Merck]. Incompatible with strong oxidizing agents.

• Hazard

  Highly toxic by ingestion, inhalation, and skin absorption.

• Health Hazard

  Mercuric thiocyanate causes severe eye and skin irritation with possible burns and causes digestive and respiratory tract irritation with possible burns. It may impair fertility, may cause harm to the unborn child, is harmful if inhaled, may cause allergic skin reaction, may cause kidney damage, may cause CNS effects, is light sensitive, and is a severe marine pollutant. Contact with acids liberates very toxic gas. The target organs include kidneys, CNS, reproductive system, eyes, and skin.

• reaction suitability

  core: mercury
  reagent type: catalyst

• Sicherheitsprofil

  A poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. Thermally unstable and decomposition may be vigorous. When heated to decomposition it emits very toxic fumes of Hg, NOx, SOx, and CN-. See also MERCURY COMPOUNDS and CYANATES.

• Synthese

  A Hg(NO3)2 solution, acidified with a few drops of HNO3, is treated with the stoichiometric amount of KSCN solution. The resultant crystalline precipitate is suction-filtered and washed with H2O. The product may be recrystallized from hot H2O or alcohol. Yield 80%.
  Hg(NO3)2 + 2 KSCN = Hg(SCN)2 + 2KNO3
  

• mögliche Exposition

  Mercury thiocyanate is used in photography and fireworks.

• Erste Hilfe

  If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Antidotes and special procedures for medical personnel: The drug NAP (n-acetyl penicillamine) has been used to treat mercury poisoning, with mixed success. Note to physician: For severe poisoning BAL [British AntiLewisite, dimercaprol, dithiopropanol (C3H8OS2)] has been used to treat toxic symptoms of certain heavy metals poisoning including mercury. Although BAL is reported to have a large margin of safety, caution must be exercised, because toxic effects may be caused by excessive dosage. Most can be prevented by premedication with 1-ephedrine sulfate (CAS: 134-72-5).

• Lager

  Color Code—Blue: Health Hazard/Poison: Store in a secure poison location. Prior to working with this chemical you should be trained on its proper handling and storage. Store in tightly closed containers in a cool, wellventilated area away from light, heat, and acids, including fumes.

• Versand/Shipping

  UN1646 Mercury thiocyanate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

• läuterung methode

  Recrystallise it from H2O, and it can give various crystal forms depending on conditions. Its solubility in H2O is 0.069% at 25o, but is more soluble at higher temperatures. It decomposes to Hg above 165o. Poisonous. [Mason & Forgeng J Phys Chem 35 1121 1931, Birckenbach & Kolb Chem Ber 68 919 1935.]

• Inkompatibilitäten

  Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Mercury thiocyanate is sensitive to heat; expands to many times its original volume and then decomposes at freezing/melting point forming toxic fumes of sulfur oxides, mercury cyanide, and nitrogen oxides. Contact with acid or acid fumes causes release of toxic mercury and cyanide vapors. Incompatible with chlorine, reducing agents such as hydrides, sulfides

• Waste disposal

  Small amounts may be destroyed by alkaline hydrolysis. Admixture with alkali can be followed by soil burial. Larger quantities can be disposed of by incineration in admixture with acetone or xylene and using effluent gas scrubbing. Do not reuse empty container; proper disposal required.

MERCURIC THIOCYANATE Upstream-Materialien And Downstream Produkte

592-85-8, MERCURIC THIOCYANATE Verwandte Suche: