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Bariumcarbonat

Barium carbonate Struktur
513-77-9
CAS-Nr.
513-77-9
Bezeichnung:
Bariumcarbonat
Englisch Name:
Barium carbonate
Synonyma:
WITHERITE;CARBONIC ACID BARIUM SALT;.03%);ci77099;bf1(salt);c.i.77099;caswellno069;pigmentwhite10;Bariumcarbonat;arium carbonate
CBNumber:
CB2145712
Summenformel:
CBaO3
Molgewicht:
197.34
MOL-Datei:
513-77-9.mol

Bariumcarbonat Eigenschaften

Schmelzpunkt:
811 °C
Siedepunkt:
1450 °C
Dichte
4.43
storage temp. 
Store at +5°C to +30°C.
L?slichkeit
0.02g/l
Aggregatzustand
Powder/Solid
Farbe
White
Wichte
4.43
Geruch (Odor)
Odorless
PH
7-8 (0.016g/l, H2O, 16℃)
Wasserl?slichkeit
0.002 g/100 mL (20 ºC)
Decomposition 
1300°C
Merck 
14,969
BRN 
7045119
Solubility Product Constant (Ksp)
pKsp: 8.59
Stabilit?t:
Stable. Incompatible with strong acids.
CAS Datenbank
513-77-9(CAS DataBase Reference)
EPA chemische Informationen
Barium carbonate (513-77-9)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xn
R-S?tze: 22
S-S?tze: 24/25
RIDADR  UN 1564 6.1/PG 3
WGK Germany  -
RTECS-Nr. CQ8600000
TSCA  Yes
HazardClass  6.1(b)
PackingGroup  III
HS Code  28366000
Giftige Stoffe Daten 513-77-9(Hazardous Substances Data)
Toxizit?t LD50 orally in Rabbit: 418 mg/kg
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
Sicherheit
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P270 Bei Gebrauch nicht essen, trinken oder rauchen.
P301+P312 BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P501 Inhalt/Beh?lter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Bariumcarbonat Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

WEISSES, KRISTALLINES PULVER

CHEMISCHE GEFAHREN

Reagiert heftig mit starken S?uren. Reagiert heftig mit Bromtrifluorid unter Feuergefahr.

ARBEITSPLATZGRENZWERTE

TLV nicht festgelegt.
MAK nicht festgelegt.

AUFNAHMEWEGE

Aufnahme in den K?rper durch Verschlucken.

INHALATIONSGEFAHREN

Eine gesundheitssch?dliche Partikelkonzentration in der Luft kann schnell erreicht werden, vor allem als Pulver.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Kann mechanische Reizungen verursachen. Exposition kann zu Hypokalaemia führen, mit nachfolgenden muskul?ren und Herzfunktionsst?rungen bei Verschlucken in hohen Dosen.

LECKAGE

Pers?nliche Schutzausrüstung: Atemschutzger?t, P2-Filter für sch?dliche Partikel. Verschüttetes Material in Beh?ltern sammeln. Reste sorgf?ltig sammeln. An sicheren Ort bringen.

R-S?tze Betriebsanweisung:

R22:Gesundheitssch?dlich beim Verschlucken.

S-S?tze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

Beschreibung

Barium carbonate has the molecular formula of BaCO3 and the molecular weight of 197.3359 g/mol. Its CAS number is 513-77-9. Barium carbonate has only one stable form (aragonite-type structure) and temperature of precipitation has no effect on crystal form, unlike that of calcium or magnesium carbonates.

Chemische Eigenschaften

Barium carbonate, BaCO3, also known as witherite, is a white powder that is soluble in acids,with the exception of sulfuric acid.It has a melting point of 174°C and is used in television picture tubes, rodenticide, optical glass and ceramic flux.
Barium carbonate
Barium oxide, BaO, is manufactured by decomposition of barium carbonate.

Physikalische Eigenschaften

White powder; orthorhombic crystal system; density 4.286 g/cm3; refractive index 1.60; hardness 3.50 Mohs; melts at 811°C; insoluble in water (c. 25 mg/L at 25°C); Ksp 2.0 x 10-9.

Occurrence

Barium carbonate is found in nature as mineral witherite. The compound has many major commercial applications in brick, glass, ceramics, oil-drilling, photographic and chemical industries. It is mixed with wet clay to immobilize many water-soluble salts in making uniform red bricks. In the glass industry, barium is added to glass as barium carbonate or barium oxide to improve the refractive index of optical glass; also to promote sintering and lower the viscosity of melted glass to make glass bead formation easy. It is used in the manufacture of television picture tubes and photographic paper. Another important application involves its use as a fluxing ingredient in ceramic industry for enamels, glazes and ceramic bodies. Barium carbonate is used in oil-well drilling to insolubilize gypsum and inhibit coagulation; in ferrous metallurgy for steel carburizing; in chlor-alkali cells for treating salt brines to remove sulfates; and to make ferrite, and barium titanate. Many barium salts are prepared from barium carbonate.

Verwenden

Barium carbonate has many major commercial applications in brick, glass, ceramics, oil-drilling, photographic and chemical industries. It is mixed with wet clay to immobilize many water-soluble salts in making uniform red bricks. In the glass industry, barium is added to glass as barium carbonate or barium oxide to improve the refractive index of optical glass and also to promote sintering and lower the viscosity of melted glass to make glass bead formation easy. It is used in the manufacture of television picture tubes and photographic paper. Another important application involves its use as a fluxing ingredient in ceramic industry for enamels, glazes and ceramic bodies. Barium carbonate is used in oil well drilling to insolubilize gypsum and inhibit coagulation; in ferrous metallurgy for steel carburizing; in chloralkali cells for treating salt brines to remove sulfates; and to make ferrites, and barium titanate. Many barium salts are prepared from barium carbonate.

Definition

barium carbonate: A white insolublecompound, BaCO3; r.d. 4.43. It decomposeson heating to give bariumoxide and carbon dioxide:
BaCO3(s) → BaO(s) + CO2(g)
The compound occurs naturally asthe mineral witherite and can be preparedby adding an alkaline solutionof a carbonate to a solution of a bariumsalt. It is used as a raw materialfor making other barium salts, as aflux for ceramics, and as a raw materialin the manufacture of certaintypes of optical glass.

synthetische

Barium carbonate is made commercially from barium sulfide either by treatment with sodium carbonate or ammonium carbonate at 60 to 70°C or by passing CO2 gas through a soluble Ba2+ solution at 40 to 90°C.

Allgemeine Beschreibung

Barium carbonate is a white powder. Barium carbonate is insoluble in water and soluble in most acids, with the exception of sulfuric acid. Barium carbonate has a specific gravity of 4.275. Barium carbonate is toxic by ingestion.

Air & Water Reaktionen

Barium carbonate is insoluble in water and soluble in most acids, with the exception of sulfuric acid.

Reaktivit?t anzeigen

Salts, basic, such as Barium carbonate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

Hazard

A poison.

Health Hazard

(INGESTION ONLY): excessive salivation, vomiting, severe abdominal pain, and violent purging with watery and bloody stools; a slow and often irregular pulse and a transient elevation in arterial blood pressure; tinnitus, giddiness and vertigo; muscle twitchings, progressing to convulsions and/or paralysis; dilated pupils with impaired accommodation; confusion and increasing somnolence, without coma; collapse and death from respiratory failure and cardiac arrest.

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.

Sicherheitsprofil

Poison by ingestion, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: stomach ulcers, muscle weakness, paresthesias and paralysis, hypermotility, diarrhea, nausea or vomiting, lung changes. Experimental reproductive effects. Incompatible with BrF3 and 2- furanpercarboxylic acid. See also BARIUM COMPOUNDS (soluble).

Bariumcarbonat Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Bariumcarbonat Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 557)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Shanghai MaiNo material technology Co.Ltd
+86-13862580743 +86-13862580743
shirleyzhang04@hotmail.com China 71 58
Chongqing Chuandong Chemical (Group) Co. Ltd.
+86-13637972665 +86-13637972665
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+86-86-17798073498 +8617798073498
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TEKA-FAST LIMITED
+8618601192704
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+8615531157085
abby@weibangbio.com China 8807 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325
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Hebei Fengjia New Material Co., Ltd
+86-0311-87836622 +86-17333973358
sales06@hbduling.cn China 8051 58
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+86-17736087130 +86-18633844644
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+8613343047651
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