Tetraphosphor Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
WEISSER BIS GELBER, DURCHSCHEINENDER, WACHSWEICHER, KRISTALLINER FESTSTOFF. DUNKELF?RBUNG BEI KONTAKT MIT LICHT.
CHEMISCHE GEFAHREN
Kann sich beim Kontakt mit Luft spontan entzünden unter Bildung giftiger Rauche (Phosphoroxide). Reagiert sehr heftig mit Oxidationsmitteln. Reagiert mit starken Basen unter Bildung vongiftigem Gas (Phosphin).
ARBEITSPLATZGRENZWERTE
TLV: 0.1 mg/m?(als TWA); (ACGIH 2005).
MAK: 0.05 mg/m? (Einatembare Fraktion) Spitzenbegrenzung: überschreitungsfaktor II(2); Schwangerschaft: Gruppe C; (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation der D?mpfe und durch Verschlucken.
INHALATIONSGEFAHREN
Verdampfung bei 20°C vernachl?ssigbar; eine gesundheitssch?dliche Partikelkonzentration in der Luft kann jedoch schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz ver?tzt die Augen, die Haut und die Atemwege. ?tzend beim Verschlucken. Inhalation des Dampfes kann zu Lungen?dem führen (s.Anm.). M?glich sind Auswirkungen auf Nierenund Leber. Exposition kann zum Tod führen. Die Auswirkungen treten u.U. verz?gert ein. ?rztliche Beobachtung notwendig.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
M?glich sind Auswirkungen auf die Knochen.
LECKAGE
Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Verschüttetes Material mit nassem Sand oder Erde abdecken. NICHT in die Kanalisation spülen. Verschüttetes Material in Beh?ltern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. An sicheren Ort bringen. NICHT mit S?gemehl oder anderen brennbaren Absorptionsmitteln binden. Pers?nliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t.
Beschreibung
White phosphorus,also known as yellow phosphorus, is a nonmetallic element that is found in the form of crystals or a wax-like transparent solid. It ignites spontaneously in air at 86°F, which is also its ignition temperature. White phosphorus should be stored under water and away from heat. It is a dangerous fire risk, with a boiling point of 536°F (280°C) and a melting point of 111°F (43°C). White phosphorus is toxic by inhalation and ingestion, and contact with skin produces burns. The TLV is 0.1 mg/m3 of air, and it is insoluble in water, with a specific gravity of 1.82, which is heavier than air. White phosphorus is shipped and stored under water to keep it from contacting air. The four-digit UN identification number is 2447. The NFPA 704 designation is health 4, flammability 4, and reactivity 2. The primary uses are in rodenticides, smoke screens, and analytical chemistry.
Chemische Eigenschaften
Phosphorus is a white to yellow, soft, waxy solid with acrid fumes in air. White/yellow phosphorus is either a yellow or colorless, volatile, crystalline solid which darkens when exposed to light and ignites in air to form white fumes and greenish light. It has a garlic-like odor. Usually shipped or stored in water.
m?gliche Exposition
White or yellow phosphorus is handled away from air so that exposure is usually limited. Phosphorus was at one time used for the production of matches or “l(fā)ucifers” but has long since been replaced due to its chronic toxicity. It is used in the manufacture of munitions including tracer bullets, pyrotechnics, explosives, smoke bombs; and other incendiary agents; (because it spontaneously catches fire in air) and as a smoke agent (because it produces clouds of irritating white smoke). Phosphorus is used artificial fertilizers; rodenticides, phosphor bronze alloys; semiconductors, Electro-luminescent coating; and chemicals, such as phosphoric and metallic phosphides. RP is used as a choking/pulmonary agent
Versand/Shipping
UN1338 Phosphorus, amorphous, Hazard Class: 4.1; Labels: 4.1-Flammable solid. UN1381 Phosphorus, white, dry; under water, in solution; Phosphorus, yellow, dry; yellow, under water; in solution, Hazard Class: 4.2; Labels: 4.2-Spontaneously combustible material, 6.1Poisonous materials. UN2447 Phosphorus white, molten, Hazard Class: 4.2; Labels: 4.2-Spontaneously combustible material, 6.1-Poisonous materials.
Inkompatibilit?ten
Phosphorus, a pyrophoric solid, spontaneously ignite on contact with air, producing toxic phosphorus oxide fumes. Reacts with strong bases, releasing toxic phosphine gas. Phosphorus reacts violently with oxidizers, halogens, some metals, nitrites, sulfur, and many other compounds, causing a fire and explosion hazard. White/yellow reacts with air, halogens, halides, sulfur, oxidizers, alkali hydroxides (forming gas); and metals (forming reactive phosphides). Red is a combustible solid. Friction or contact with oxidizers can cause ignition. Incompatible with many other substances. Forms gas and phosphoric acid on contact with moisture. Opened packages of red phosphorus should be stored under inert gas blanket.
Waste disposal
Controlled incineration followed by alkaline scrubbing and particulate removal equipment.
Tetraphosphor Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
