Cadmiumsulfid

Bezeichnung:Cadmiumsulfid

CAS-Nr1306-23-6

Englisch Name:Cadmium sulfide

CBNumberCB6853020

SummenformelCdS

Molgewicht144.48

MOL-Datei1306-23-6.mol

Synonyma

Cadmiumsulfid

Cadmiummonosulfid

Cadmiumsulfid physikalisch-chemischer Eigenschaften

Schmelzpunkt	980°C (subl.)
Siedepunkt	980°C (estimate)
Dichte	4.82 g/mL at 25 °C(lit.)
Flammpunkt	4℃
storage temp.	2-8°C
Löslichkeit	Soluble in acid, very slightly soluble in ammonium hydroxide.
Aggregatzustand	powder
Farbe	Yellow to orange
Wichte	4.82
Wasserlöslichkeit	Insoluble
Crystal Structure	Cubic, Sphalerite Structure - Space Group F(-4)3m
Merck	14,1628
Solubility Product Constant (Ksp)	pKsp: 26.1
Expositionsgrenzwerte	ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3 NIOSH: IDLH 9 mg/m3
CAS Datenbank	1306-23-6(CAS DataBase Reference)
EPA chemische Informationen	Cadmium sulfide (1306-23-6)

Sicherheit

Kennzeichnung gefährlicher	T,N,F
R-Sätze:	45-22-48/23/25-53-62-63-68-50/53-67-65-48/20/22-38-11
S-Sätze:	53-45-61-60-62-36/37-16
RIDADR	UN 3077 9/PG 3
WGK Germany	3
RTECS-Nr.	EV3150000
TSCA	Yes
HazardClass	6.1
PackingGroup	III
Giftige Stoffe Daten	1306-23-6(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Cadmium sulfide Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
HELLGELBE ODER ORANGE KRISTALLE ODER GELBES BIS BRAUNES PULVER
CHEMISCHE GEFAHREN
Die Substanz zersetzt sich beim Verbrennen unter Bildung von giftigen Rauchen mit Schwefeloxiden. Reagiert mit starken Oxidationsmitteln. Reagiert mit Säuren unter Bildung giftiger Gase (Schwefelwasserstoff).
ARBEITSPLATZGRENZWERTE
TLV: as Cd (Alveolengängige Fraktion) (als TWA); 0.002 mg/m?Krebskategorie A2 (Verdacht auf krebserzeugende Wirkung beim Menschen); BEI vorhanden; (ACGIH 2007).
MAK: Cd & anorganische Verbindungen (Einatembare Fraktion) Hautresorption (H); Krebserzeugend Kategorie 1; Keimzellmutagen Kategorie 3A (DFG 2007).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.
INHALATIONSGEFAHREN
Eine gesundheitsschädliche Partikelkonzentration in der Luft kann schnell erreicht werden beim Dispergieren, vor allem als Pulver.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Kann mechanische Reizungen der Augen verursachen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Möglich sind Auswirkungen auf die Nieren, Knochen und die Atemwege mit nachfolgenden Nierenschäden, Osteoporose (Knochenschwäche) und chronischer Entzündung der Atemwege. Krebserzeugend für den Menschen.
LECKAGE
Persönliche Schutzausrüstung: Atemschutzgerät mit Partikelfilter entsprechend der Arbeitsplatzkonzentration des Stoffes. Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. NICHT in die Umwelt gelangen lassen.
R-Sätze Betriebsanweisung:
R45:Kann Krebs erzeugen.
R22:Gesundheitsschädlich beim Verschlucken.
R48/23/25:Giftig: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Einatmen und durch Verschlucken.
R53:Kann in Gewässern längerfristig schädliche Wirkungen haben.
R62:Kann möglicherweise die Fortpflanzungsfähigkeit beeinträchtigen.
R63:Kann das Kind im Mutterleib möglicherweise schädigen.
R68:Irreversibler Schaden möglich.
S-Sätze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Beschreibung
Cadmium sulfide is an odorless, crystalline,lemon yellow to orange solid. Molecular weight=144.48;Specific gravity (H2O:1)=4.8; Sublimation point=978℃.Insoluble in water.
Chemische Eigenschaften
Cadmium sulfide is an odorless, crystalline, lemon yellow to orange solid.
Chemische Eigenschaften
yellow to orange crystalline powder
Physikalische Eigenschaften
Yellow to orange crystal; occurs as two polymorphs, hexagonal alpha form and cubic beta form; exhibits stable wurtzite structure at lower temperature, and zinc blende type structure at higher temperatures; the beta form converts to alpha form when heated at 750°C in sulfur atmosphere; sublimes at 980°C; practically insoluble in water (1.3 mg/L at 20°C); Ksp 3.6x10-29; dissolves in dilute mineral acids on heating or concentrated acids at ordinary temperatures (decomposes with liberation of H₂S).
Occurrence
Cadmium sulfide occurs in nature as the mineral greenoktite. The compound is widely used in pigments for paints, baking enamels, ceramics and plastics. It imparts bright yellow to maroon, with strong retention of color and resistance to alkalis. It also is used in inks, phosphors, and fluorescent screens. Other applications of this compound are in photovoltaic and solar cells (for converting solar energy to electrical energy), photoconductors (in xerography), thin film transistors and diodes, rectifiers, scintillation counters, pyrotechnics, and smoke detectors.
Verwenden
Used in the production of solar cells where it is used as a buffer layer in the manufacture of CIGS (Copper -Indium-Gallium-Selenide) solar cells
Verwenden
As a pigment being fast to light and not affected by H2S; color for soaps; coloring glass yellow; coloring textiles, paper, rubber; in printing inks, ceramic glazes, fireworks; in phosphors and fluorescent screens; in scintillation counters, semiconductors, photoconductors.
Verwenden
cadmium sulfide is used as a colorant for paints and rubber; cadmium acetate is used in the production of craftware.
Definition
A native cadmium sulfide containing 77.7% cadmium. Ore of cadmium
synthetische
Cadmium sulfide may be prepared by precipitation from an aqueous solution of its soluble salts such as cadmium chloride or cadmium nitrate by passing hydrogen sulfide. The reactions may be carried out in acidic, neutral or alkaline solutions using various cadmium salts to obtain different crystal modifications as shown in the table below.

Cadmium sulfide also may be obtained by treatment of sodium or other alkali metal sulfide solution with that of a soluble cadmium salt. The compound also may be prepared by heating a mixture of cadmium or its oxide with sulfur at 800°C; or by the reaction of H₂S with cadmium vapor at 800°C.
Definition
Greenockite: a mineral form ofcadmium sulphide, CdS.
Vorbereitung Methode
Cadmium sulfide may be prepared by the reaction between hydrogen sulfide and cadmiumvapor at 800 Cor by heating a mixture of cadmium or cadmium oxide with sulfur.
Allgemeine Beschreibung
Natural occurrence: hawleyite (structural type of sphalerite) and greenockite (structural type of wurtzite)
Hazard
A confirmed carcinogen, highly toxic. See cadmium.
Sicherheitsprofil
Confirmed human carcinogen with experimental carcinogenic and tumorigenic data. Moderately toxic by ingestion and inhalation. Human mutation data reported. When heated to decomposition it emits very toxic fumes of Cd and SOx. See also CADMIUM COMPOUNDS and SULFIDES
mögliche Exposition
Used in pigments; as an active ingredient in dandruff shampoos; making photoconductors, solar cells, and other electronic components.
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for atleast 15 min, occasionally lifting upper and lower lids.Seek medical attention immediately. If this chemicalcontacts the skin, remove contaminated clothing and washimmediately with soap and water. Seek medical attentionimmediately. If this chemical has been inhaled, removefrom exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing hasstopped and CPR if heart action has stopped. Transferpromptly to a medical facility. When this chemical hasbeen swallowed, get medical attention. Give large quantitiesof water and induce vomiting. Do not make an unconsciousperson vomit. Medical observation is recommended for24-48 h after breathing overexposure, as pulmonary edemamay be delayed. As first aid for pulmonary edema, a doctoror authorized paramedic may consider administering a corticosteroid spray.Note to physician: In case of fume inhalation, treat pulmonary edema. Give prednisone or other corticosteroid orallyto reduce tissue response to fume. Positive-pressureventilation may be necessary. Treat metal fume fever withbed rest, analgesics, and antipyretics. The symptoms ofmetal fume fever may be delayed for 4-12 h followingexposure: it may last less than 36 h.Note to physician: For severe poisoning do not useBAL [British Anti-Lewisite, dimercaprol, dithiopropanol(C3H8OS2)] as it is contraindicated or ineffective inpoisoning from cadmium.
Solubility in water
Cadmium sulfide is soluble in water, with a solubility of 13×10^-5 g/100 ml H2O (18℃). CdS is soluble in acid.
Lager
Color Code—Blue: Health Hazard: Store in asecure poison location. Prior to working with Cadmium sulfide, you should be trained on its proper handling and storage. A regulated, marked area should be established wherethis chemical is handled, used, or stored in compliance withOSHA Standard 1910.1045. Store in tightly closed containers in a cool, dark, well-ventilated area away from oxidizersand metals, strong acids, water or moisture, and otherincompatible materials listed above.
Versand/Shipping
UN2570 Cadmium compounds, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
Structure and conformation
Cadmium sulfide takes two types of structure, zinc blend and wurtzite structures.
Cubic system that has a zinc-blend structure, with a lattice constant of a=0.582 nm and Cd– S=0.252 nm.
Hexagonal system that has a wurtzite structure with lattice constants of a=0.4136 nm, c=0.6713 nm and c/a=1.624, Cd–S=0.252 nm.
Inkompatibilitäten
Contact with water or moisture releases poisonous hydrogen sulfide gas. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause
Waste disposal
Use a licensed professional waste disposal service to dispose of this material. All federal, state, and local environmental regulations must be observed. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposa

Cadmium sulfide Upstream-Materialien And Downstream Produkte

Cadmiumsulfid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1306-23-6, Cadmium sulfide Verwandte Suche:

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