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Dinatriumsulfid

Sodium sulfide Struktur
1313-82-2
CAS-Nr.
1313-82-2
Bezeichnung:
Dinatriumsulfid
Englisch Name:
Sodium sulfide
Synonyma:
SODIUM SULPHIDE;Disodium sulfide;sodiumsulfuret;disodium sulphide;sodiumsulfide(na2s);Sodium sulfide solid;sodiumsulfide(anhydrous);sodiumsulphide,anhydrous;sodiumsulfide(non-specificname);Na2-S
CBNumber:
CB3429046
Summenformel:
Na2S
Molgewicht:
78.04
MOL-Datei:
1313-82-2.mol

Dinatriumsulfid Eigenschaften

Schmelzpunkt:
950 °C(lit.)
Dichte
1.86 g/mL at 25 °C(lit.)
storage temp. 
Refrigerator (+4°C)
L?slichkeit
H2O: 0.1 g/mL, clear, colorless
Aggregatzustand
flakes
Farbe
Yellow
Wichte
1.856
Wasserl?slichkeit
186 g/L (20 ºC)
Sensitive 
Hygroscopic
Crystal Structure
Reverse CaF2 type
crystal system
Cube
Merck 
14,8681
Space group
Fm3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.6540.6540.6549090900.2797
Dielectric constant
5.0(Ambient)
Stabilit?t:
Spontaneously flammable. Incompatible with acids, metals, oxidizing agents. Contact with acid liberates toxic gas. Fine dust/air mixtures are explosive. Hygroscopic.
InChIKey
CXPWOVUZRAFMDA-UHFFFAOYSA-N
CAS Datenbank
1313-82-2(CAS DataBase Reference)
NIST chemische Informationen
Sodium sulfide(1313-82-2)
EPA chemische Informationen
Sodium sulfide (1313-82-2)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher C,N,Xn
R-S?tze: 31-34-50-22
S-S?tze: 26-45-61-36/37/39
RIDADR  UN 1849 8/PG 2
WGK Germany  2
RTECS-Nr. WE1905000
3-8-9-23
TSCA  Yes
HazardClass  4.2
PackingGroup  II
HS Code  28301010
Giftige Stoffe Daten 1313-82-2(Hazardous Substances Data)
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H251 Selbsterhitzungsf?hig; kann in Brand geraten. Self-heating substances and mixtures Category 1 Achtung GHS hazard pictogramssrc="/GHS02.jpg" width="20" height="20" />
H290 Kann gegenüber Metallen korrosiv sein. Korrosiv gegenüber Metallen Kategorie 1 Warnung GHS hazard pictogramssrc="/GHS05.jpg" width="20" height="20" /> P234, P390, P404
H314 Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. ?tzwirkung auf die Haut Kategorie 1B Achtung GHS hazard pictogramssrc="/GHS05.jpg" width="20" height="20" /> P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H400 Sehr giftig für Wasserorganismen. Kurzfristig (akut) gew?ssergef?hrdend Kategorie 1 Warnung GHS hazard pictogramssrc="/GHS09.jpg" width="20" height="20" /> P273, P391, P501
Sicherheit
P235 Kühl halten
P260 Dampf/Aerosol/Nebel nicht einatmen.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P303+P361+P353 BEI BERüHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

Dinatriumsulfid Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

WEISSE BIS GELBE HYGROSKOPISCHE KRISTALLE MIT CHARAKTERISTISCHEM GERUCH.

CHEMISCHE GEFAHREN

Zersetzung beim Verbrennen, bei Kontakt mit S?urenoder Wasser unter Bildung giftiger und ?tzender Gase. Erh?hte Feuergefahr. Starke Base in w?ssriger L?sung. Reagiert sehr heftig mit S?uren. ?tzend. Reagiert sehr heftig mit Oxidationsmitteln.

ARBEITSPLATZGRENZWERTE

TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den K?rper durch Inhalation, über die Haut und durch Verschlucken.

INHALATIONSGEFAHREN

Eine gesundheitssch?dliche Partikelkonzentration in der Luft kann beim Dispergieren schnell erreicht werden.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz ver?tzt die Augen, die Haut und die Atemwege. ?tzend beim Verschlucken.

LECKAGE

Zündquellen entfernen. Verschüttetes Material mit trockener Erde oder Sand abdecken. Verschüttetes Material in Beh?ltern sammeln. Reste sorgf?ltig sammeln. An sicheren Ort bringen. NICHT in die Umwelt gelangen lassen. Chemikalienschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t.

R-S?tze Betriebsanweisung:

R31:Entwickelt bei Berührung mit S?ure giftige Gase.
R34:Verursacht Ver?tzungen.
R50:Sehr giftig für Wasserorganismen.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.

Chemische Eigenschaften

Sodium sulfide,Na2S, also known as sodium sulfuret,is an irritating, water-soluble, yellowish to reddish, deliquescent powder that melts at 1180°C (2156 °F). Sodium sulfide is used as a chemical intermediate and solvent,in conversion of wood into paper pulp, as a photographic and analytical reagent,as a source of sulfide,as a reducing agent,in organic reactions, as a depilatory, and in sheep dips.

Physikalische Eigenschaften

White cubic crystal; hygroscopic; density 1.856 g/cm3; melts at 1,172°C; soluble in water 18.6 g/100mL at 20°C and 39 g/100mL at 50°C; aqueous solutions strongly alkaline; slightly soluble in alcohol; insoluble in ether.
The pentahydrate consists of flat, shiny prismatic crystals; density 1.58 g/cm3; loses three water molecules at 100°C; melts at 120°C losing all water molecules; soluble in water and alcohol; aqueous solutions strongly alkaline; insoluble in ether.
The nonahydrate is a yellowish-white crystalline solid; tetragonal crystals; odor of hydrogen sulfide; the color changes on exposure to light and air, first turning to yellow and then becoming brownish-black, deliquescent; density 1.43 g/cm3; decomposes at about 50°C; very soluble in water; aqueous solution strongly alkaline; slightly soluble in alcohol; insoluble in ether.

Verwenden

These yellow flakes were made by fusing sodium carbonate with sulfur. Soluble in water but less so in alcohol, sodium sulfide was lovingly called “stink” by those who used it for toning prints or intensifying negatives because of its sulfurous smell.

Definition

ChEBI: A sulfide salt with formula Na2S. The pentahydrate and (particularly) the nonahydrate are also known. In gel form, sodium sulfide is used to soften toenails to assist in trimming (and so relive pain) of ingrowing toenails.

synthetische

Sodium sulfide is prepared by heating sodium bisulfate with sodium chloride and coal above 950°C. The product mixture is extracted with water and the hydrated sulfide is obtained from the solution by crystallization: NaHSO4 + NaCl + 2C → Na2S + 2CO2↑ + HCl↑
Sodium sulfide also is produced from its elements in liquid ammonia: Na + 2S → Na2S.

Allgemeine Beschreibung

Sodium sulfide is a yellow to brick red crystalline mass or fused solid with an odor of rotten eggs. If exposed to moist air Sodium sulfide is liable to spontaneous heating and may cause ignition of nearby combustible material. Sodium sulfide absorbs moisture from the air.

Air & Water Reaktionen

Aqueous solutions of sodium sulfide when exposed to air slowly convert to sodium hydroxide and sodium thiosulfate. The crystalline form upon exposure to air forms hydrogen sulfide and sodium carbonate [Merck 11th ed. 1989].

Reaktivit?t anzeigen

SODIUM SULFIDE is a white to yellow crystalline material, flammable. Can explode on rapid heating or when shocked. Violent reaction with carbon, charcoal, diazonium salts, N,N-dichloromethylamine, strong oxidizers, water. On contact with acids Sodium sulfide liberates highly toxic and flammable hydrogen sulfide gas. When heated to decomposition Sodium sulfide emits toxic fumes of sodium oxide, and oxides of sulfur [Bretherick, 5th ed., 1995, p. 1729].

Hazard

Flammable, dangerous fire and explosion risk. Strong irritant to skin and tissue, liberates toxic hydrogen sulfide on contact with acids.

Health Hazard

Caustic action on skin and eyes. If ingested may liberate hydrogen sulfide in stomach.

Brandgefahr

Special Hazards of Combustion Products: Irritating sulfur dioxide is produced in fire.

Industrielle Verwendung

In non-metallic flotation, sodium sulfide is also used as a depressant and for collector desorption, in particular, fatty acids from monazite, pyrochlore, zircon and microcline. As a depressant for quartz, sodium sulfide is an excellent depressant for iron-activated quartz as well as non-activated quartz.

Sicherheitsprofil

A poison by ingestion and intraperitoneal routes. Flammable when exposed to heat or flame. Unstable and can explode on rapid heating or percussion. Reacts violently with carbon, diazonium salts, n,n-dichloromethylamine, onitroaniline diazonium salt, water. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFIDES

l?uterung methode

Some purification of the hydrated salt can be achieved by selecting large crystals and removing the surface layer (contaminated with oxidation products) by washing with distilled water. Other metal ions can be removed from Na2S solutions by passage through a column of Dowex ion-exchange A-1 resin, Na+-form. The hydrated salt can be rendered anhydrous by heating it in a stream of H2 or N2 until water is no longer evolved. (The resulting cake should not be heated to fusion because it is readily oxidised.) Recrystallise it from distilled water [Anderson & Azowlay J Chem Soc, Dalton Trans 469 1986]. Note that sodium sulfide hydrolyses in H2O to form NaHS + H2O, and is therefore alkaline. A 0.1N solution in H2O is 86% hydrolysed at room temperature. Its solubility in H2O is 8% at 0o, 12% at 20o and 30% at 50o. The anhydrous salt is obtained by allowing it to stand in a vacuum over conc H2SO4 or P2O5 at 45o to start with, then at 30-35o when the salt contains 4% of water. The last traces of water are removed by heating to 700o in a glass or porcelain tube in a stream of H2 to give pure H2S. [Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I pp 358-360 1963.]

Dinatriumsulfid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Dinatriumsulfid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 527)Lieferanten
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+8619931165850
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+86-371-86557731 +86-13613820652
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+86-0371-55170693 +86-19937530512
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18871490254
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86-13657291602
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18853181302
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1313-82-2(Dinatriumsulfid)Verwandte Suche:


  • sodiumsulfide,anhydrous
  • sodiumsulfide,hydrated,withnotlessthan30%water
  • sodiumsulfide[na2s]
  • Sodium sulfide, 90%, balance water
  • SODIUM SULFIDE
  • Disodium monosulfide
  • disodiummonosulfide
  • disodiumsulfide
  • Hesthsulphid
  • Na2-S
  • Sodium sulfide (Na2S)
  • Sodium sulfide, anhydrous
  • Sodium sulfuret
  • Sodium Sulphide Lye 20%
  • SodiumSulfideNa2S*9H2O
  • Sodium sulfide, dried, 90% balance water, pure, 90%
  • Sodiumsulfide,anhydrous,min.95%
  • SODIUMSULFIDE,FUSEDFLAKES
  • Natriumsulfid8
  • disodium sulphide sodium sulphide
  • Sodium sulfide, 90+%, pure
  • Sodium sulfide, anhydrous, min. 95%
  • Sodium sulfide, pure
  • Disodio sulfide
  • Disodiosulfur
  • Thiobissodium
  • Sodium sulfide ,90%
  • Sodium sulfide, pure, 90+%
  • SodiuM sulfide, pure, 90+% 10GR
  • SodiuM sulfide, pure, 90+% 50GR
  • Sodium sulfide, 90%, anhydrous
  • Sodium sulfide test solution(ChP)
  • sodium sulfide, sodium sulphide
  • Sodium Sulfide DISCONTINUED. Please see S670980
  • Sodium sulfide test solution
  • Sodium sulfide Standard Solution
  • sodium-sulphide-trihydrate
  • sodiumsulfide(anhydrous)
  • sodiumsulfide(na2s)
  • sodiumsulfide(non-specificname)
  • sodiumsulfuret
  • sodiumsulphide,anhydrous
  • SODIUM SULPHIDE
  • Disodium sulfide
  • disodium sulphide
  • Sodium sulfide solid
  • Sodium sulfide two kind of yellow flake or red flake
  • SODIUM SULPHIDE YELLOW
  • 1313-82-2
  • Na2SxH2Ox29
  • HNa2S
  • Catalysis and Inorganic Chemistry
  • inorganic chemical raw material
  • inorganic salt
  • sulfate
  • sulfide
  • metal chalcogenides
  • Catalysis and Inorganic Chemistry
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