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Cristobalit Produkt Beschreibung

SILICA Struktur
14464-46-1
CAS-Nr.
14464-46-1
Bezeichnung:
Cristobalit
Englisch Name:
SILICA
Synonyma:
w006;SIO2;SAND;SILEX;wgl300;43-63c;SIO2/SI;DAVISIL;crysvarl;Sibelite
CBNumber:
CB5199387
Summenformel:
O2Si
Molgewicht:
60.08
MOL-Datei:
14464-46-1.mol

Cristobalit Eigenschaften

Schmelzpunkt:
1610 °C(lit.)
Siedepunkt:
>100 °C(lit.)
Dichte
2.6 g/mL at 25 °C(lit.)
Brechungsindex
n20/D 1.544(lit.)
storage temp. 
2-8°C
Aggregatzustand
tablets (~0.5 g each)
Boiling Point
2230 °C
Density
2.3 g/cm3
Melting Point
1713 °C
EPA chemische Informationen
Cristobalite (SiO2)(14464-46-1)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xn,T
R-Sätze: 48/20
S-Sätze: 22
WGK Germany  3
RTECS-Nr. VV7340000
3
HS Code  28112290
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H350 Kann Krebs verursachen. Karzinogenität Kategorie 1A Achtung
H372 Schädigt bei Hautkontakt und Verschlucken die Organe bei längerer oder wiederholter Exposition. Spezifische Zielorgan-Toxizität (wiederholte Exposition) Kategorie 1 Achtung P260, P264, P270, P314, P501
Sicherheit
P201 Vor Gebrauch besondere Anweisungen einholen.
P308+P313 BEI Exposition oder falls betroffen: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.

Cristobalit Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE ODER WEISSE KRISTALLE.

CHEMISCHE GEFAHREN

Reagiert mit starken Oxidationsmitteln unter Feuer- und Explosionsgefahr.

ARBEITSPLATZGRENZWERTE

TLV: 0,05 mg/m?(Alveolengängige Fraktion) (ACGIH 2006).
MAK: Krebserzeugend Kategorie 1; (DFG 2008).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation.

INHALATIONSGEFAHREN

Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Möglich sind Auswirkungen auf die Lunge mit nachfolgender Fibrose (Silikose). Krebserzeugend für den Menschen.

LECKAGE

Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Atemschutzgerät, P3-Filter für giftige Partikel.

R-Sätze Betriebsanweisung:

R48/20:Gesundheitsschädlich: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Einatmen.

S-Sätze Betriebsanweisung:

S22:Staub nicht einatmen.

Chemische Eigenschaften

Silicon dioxide/crystalline silica is a component of many mineral dusts and materials which melts to a glass at very high temperature.

Verwenden

Because of its unique physical and chemical properties, crystalline silica has many uses. Commercially produced silica products include quartzite, tripoli, ganister, chert, and novaculite. Crystalline silica also occurs in nature as agate, amethyst, chalcedony, cristobalite, flint, quartz, tridymite, and, in its most common form, sand (IARC 1997). Naturally occurring silica materials are classified by end use or industry. Sand and gravel are produced almost exclusively for road building and concrete construction, depending on particle size and shape, surface texture, and porosity (IARC 1987).

Definition

A hygroscopic substance such as activated alumina, calcium chloride, silica gel, or zinc chloride. Such substances adsorb water vapor from the air and are used to maintain a dry atmosphere in containers for food packaging, chemical reagents, etc.

Definition

Cristobalite: a mineral form of silicon(IV) oxide, SiO2.

Sicherheitsprofil

Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by intratracheal route. An inhalation hazard. Human systemic effects by inhalation: cough, dyspnea, fibrosis. About twice as toxic as silica in causing sihcosis. See also other sdica entries

mögliche Exposition

Cristobalite is used in the manufacture of water glass, refractories, abrasives, ceramics and enamels. Quartz is used as a mineral, natural or synthetic fiber. Tridymite is used as a filtering and insulating media and as a refractory material for furnace linings. Workers are potentially exposed to crystalline silica in such industries as granite quarrying and cutting, foundry operations; metal, coal, dentistry, painting, and nonmetallic mining; and manufacture of clay and glass products.

Carcinogenicity

Respirable crystalline silica, primarily quartz dusts occurring in industrial and occupational settings, is known to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in humans. Respirable crystalline silica was first listed in the Sixth Annual Report on Carcinogens in 1991 as reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals; the listing was revised to known to be a human carcinogen in the Ninth Report on Carcinogens in 2000.

Inkompatibilitäten

Violent reactions with powerful oxidizers: fluorine, chlorine trifluoride; manganese trioxide; oxygen difluoride, hydrogen peroxide, etc.; acetylene; ammonia.

Waste disposal

Sanitary landfill

Verordnung (Regulations)

Mine Safety and Health Administration
Silica sand or other materials containing more than 1% free silica shall not be used as an abrasive substance in abrasive blasting in underground areas and underground mines.
Occupational Safety and Health Administration (OSHA)
While this section accurately identifies OSHA’s legally enforceable PELs for this substance in 2010, specific PELs may not reflect the more current studies and may not adequately protect workers.
Permissible exposure limit (PEL) = 250 mppcf/(%SiO2 +5), 10 mg/m3/(%SiO2 + 2) for crystalline quartz (respirable); = 30 mg/m3/(%SiO2 + 2) for quartz (total); = one half the value calculated from the count or mass formula for quartz for cristobalite and tridymite (mppcf = millions of particles per cubic foot).

Cristobalit Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Cristobalit Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 129)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21676 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30001 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 sales@jushengtech.com CHINA 28236 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 8921 58
hdzhl biotechnology co., ltd
86-13032617415
sales@luchibiology.com CHINA 1178 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 sales@guangaobio.com CHINA 23049 58
Shandong chuangyingchemical Co., Ltd.
13156170209
sale@chuangyingchem.com CHINA 4405 58
BOC Sciences
1-631-619-7922
1-631-614-7828 inquiry@bocsci.com United States 20115 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 35440 58

14464-46-1(Cristobalit)Verwandte Suche:


  • 43-63c
  • alpha-crystobalite
  • calcineddiatomaceousearth
  • metacristobalite
  • silica,cristobalite
  • silica,crystalline-cristobalite
  • silice,cristobalite
  • w006
  • wgl300
  • SIO2
  • SIO2/SI
  • SILEX
  • SILICA 0-63
  • SILICA 100-200
  • SILICA 100-200, 100
  • SILICA 10-18
  • SILICA 10-18, 100
  • SILICA 12-26
  • SILICA 18-32
  • SILICA 18-32, 100
  • SILICA 200-500
  • SILICA 32-100
  • SILICA 32-63
  • SILICA 32-63, 100
  • SILICA 3-6
  • SILICA 3-6, 100
  • SILICA 63-100
  • SILICA 63-200
  • SILICA 63-200, 100
  • SILICA 7-12
  • SILICON OXIDE
  • SILICA 7-12, 100
  • SILICA, ANALYTICAL STANDARD
  • SILICA F-TLC
  • SILICA GEL 100
  • SILICA GEL 120
  • SILICA GEL 30
  • SILICA GEL 60
  • SILICA GEL 60-C18
  • SILICA GEL 22
  • SILICA GEL 60 G
  • SILICA GEL 60 GF254
  • SILICA GEL 60GF254 (TYPE60)
  • SILICA GEL 60G (TYPE60)
  • SILICA GEL 60 H
  • SILICA GEL 60 HF254
  • SILICA GEL 60H (TYPE60)
  • SILICA GEL 60HF254 (TYPE60)
  • SILICA GEL 60 SILANIZED
  • SILICA GEL 7
  • SILICA GEL 7G
  • SILICA GEL BEADS
  • SILICA GEL-BEADS ORANGE
  • SILICA GEL (DAVISIL) SORBENT
  • SILICA GEL DESICCANT
  • SILICA GEL DESICCANT, ORANGE GEL
  • SILICA GEL DESICCANT, BLUE GEL
  • POLYGOPREP(R) 100-12
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