Celite

Bezeichnung:Celite

CAS-Nr61790-53-2

Englisch Name:Celite

CBNumberCB9729388

SummenformelO2Si

Molgewicht60.0843

MOL-Datei61790-53-2.mol

Synonyma

Amorphe Diatomeenerde

Kieselgur, ungebrannt

Diatomeenerde, natürlich

Celite physikalisch-chemischer Eigenschaften

Schmelzpunkt	1400~1650℃
Siedepunkt	2200 °C
Dichte	0.47 g/cm³ (loose weight)(lit.)
storage temp.	no restrictions.
Aggregatzustand	solid
Geruch (Odor)	odorless
PH	~7 (25℃, 10% in aq. suspension)
Wasserlöslichkeit	insoluble
Merck	14,4973
Dielectric constant	1.4（Ambient）
Stabilität	Stable. Incompatible with strong acids
EPA chemische Informationen	Kieselguhr (61790-53-2)

Sicherheit

Kennzeichnung gefährlicher	T,Xn,Xi
R-Sätze:	48/20-36/37-49
S-Sätze:	22-39-26-36-53-45-S26
RIDADR	No citation
WGK Germany	2
RTECS-Nr.	VV7311000
TSCA	Yes
HS Code	25120000

Gefahreninformationscode (GHS)

Celite Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FEINES WEISSES PULVER.
PHYSIKALISCHE GEFAHREN
Beim Erhitzen der Substanz auf hohe Temperaturen wird kristallines Siliciumdioxid gebildet (s. ICSC 0809 Cristobalit).
ARBEITSPLATZGRENZWERTE
TLV (als amorphes Siliciumdioxid): 10 mg/m?(als TWA) (Einatembare Fraktion); 3 mg/m?(als TWA) (Alveolengängige Fraktion); Beabsichtigte änderung: Silica amorph - ungenügende Daten (ACGIH 2005).
MAK: 4 mg/m?(Einatembare Fraktion); Schwangerschaft: Gruppe C; (DFG 2005).
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 leichter Fibrose (s. Anm.).
LECKAGE
Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Atemschutzgerät, P1-Filter für inerte Partikel.
R-Sätze Betriebsanweisung:
R48/20:Gesundheitsschädlich: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Einatmen.
R36/37:Reizt die Augen und die Atmungsorgane.
R49:Kann Krebs erzeugen beim Einatmen.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S39:Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
Beschreibung
Diatomaceous earth is a transparent to gray,odorless amorphous powder. Molecular weight = 60.78;Specific gravity (H2O:1) = 2.20; Boiling point = -230℃;Freezing/Melting point = 1710℃. Hazard Identification(based on NFPA-704 M Rating System): Health 1,Flammability 0, Reactivity 0. Insoluble in water.
Chemische Eigenschaften
tan powder
Chemische Eigenschaften
Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder
Chemische Eigenschaften
Diatomaceous earth is a transparent to gray, odorless amorphous powder.
Verwenden
Filter Aid, Celite AW Standard Supercel? is used for general filtrations. It is also used as a functional filler in paints, plastics, paper, rubber, adhesives, catalysts, agricultural chemicals, pharmaceuticals and other chemicals, and a mild abrasive in polishes and cleaners. It is also used in clarifying liquids and oils, as an efficient thermal insulator; in manufacture of heat insulators, fire brick, and fire- and acid-proof packing materials; as an absorbent; in absorbent dynamite; as a solid carrier in chromatography; pozzolanic admixture in concrete mixes.
Verwenden
Chemically, diatomaceous earth is mostly amorphous silicon dioxide, accompanied by mineral salts, with large surface area. Its use as an insecticide dust is based on its capability to absorb moisture, oils, and waxes (48).
Verwenden
Highly insoluble, inert material for use as a filtration aid.
Definition
Diatomite: A whitish powdered mineral consisting mainly of silica (silicon( IV) oxide) derived from the shells of diatoms. It is used to make fireproof cements and as an absorbent in the manufacture of DYNAMITE.
Allgemeine Beschreibung
Celpure^? P65 (Diatomaceous earth, DE) is natural amorphous silica formed from the fossilized skeletons of diatoms. It is extracted, crushed, dried and calcined with or without flux material. DE is widely used as filler in construction materials, paints and as an anti-caking agent for agricultural chemicals. It has high water and oil absorption ability. The potential toxicity of different samples of DE has been assessed. DE is also employed as an adsorbent for column chromatography.
Landwirtschaftliche Anwendung
Diatomaceous earth: Diatomaceous earth kills and repels insects, including bed bugs, fleas, cockroaches, and carpet beetles, by dehydrating them, rather than chemically poisoning them, and has been used since early times. It is also used as a filtering agent and as a filler in construction materials, pesticides, paints, and varnishes. The calcined version (which has been heat treated) is the most dangerous and contains crystallized silica, and should be handled as silica.
Handelsname
CELITE®; CROP GUARD®; DIACTIV®; DIAFIL®; DI-ATOMATE®; DIE-SECTICIDE®; KENITE®; PRIMISIL®
mögliche Exposition
Diatomaceous earth is used as a filtering agent and as a filler in construction materials, pesticides, paints, and varnishes. The calcined version (which has been heat treated) is the most dangerous and contains crystallized silica, and should be handled as silica. See also other entries on silica
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical has beeninhaled, remove from exposure, begin rescue breathing(using universal precautions, including resuscitation mask)if breathing has stopped and CPR if heart action hasstopped. Transfer promptly to a medical facility.
Lager
Color Code—Green: General storage may be used.Store in tightly closed containers in a cool, well-ventilatedarea.
Versand/Shipping
This material is not singled out by DOT in its Performance-Oriented Packaging Standards.
Inkompatibilitäten
Silica, amorphous is a noncombustible solid. Generally unreactive chemically. Incompatible with fluorine, oxygen difluoride, chlorine trifluoride. Soluble in molten alkalis and reacts with most metallic oxides at high temperature.
Waste disposal
Sanitary landfill.

Celite Upstream-Materialien And Downstream Produkte

Celite Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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