68855-54-9
| Name | DIATOMACEOUS EARTH |
| CAS | 68855-54-9 |
| EINECS(EC#) | 293-303-4 |
| Molecular Formula | O2 Si |
| MDL Number | MFCD00132803 |
| Molecular Weight | 60.084 |
Synonyms
545
535
flux
guhr
HYFLO
535RV
HP 5000
HP 1600
CELITE(R)
CHEMIZORB
BETZ 0251
BETZ 0247
KIESELGEL
KIESELGUR
tripolite
whitepeat
KIESELGUHR
ceyssatite
Celite®
CELITE 281
CELITE 521
CELITE 503
CELITE 535
CELITE 545
FILTER CEL
NATRASORB T
Celite? 110
Celite®
mountainmeal
terracariosa
CHROMOSORB G
CHROMOSORB W
'CELITE' 545
FILTER AGENT
FOSSIL FLOUR
CELITE(R) 500
CELITE(R) 545
CELITE(R) AFA
CELITE(R) 577
CELITE(R) 560
CELITE(R) 535
CELITE(R) 521
CELITE(R) 512
CELITE(R) 503
CELITE(R) 501
CELATOM FW-80
CELATOM FW-60
CELATOM FW-50
CELATOM FW-14
PRIMISIL 1202
KIESELGUHR DG
Celite? 545RV
Celite 545 NF
RADIOLITE®
Celpure? P1000
CELITE(TM) 545
CELITE(TM) 521
CELITE(TM) 503
CELITE(TM) 501
CELPURE(R) P65
CELPURE(R) P300
GR FOR ANALYSIS
HYFLO SUPER-CEL
CELITE(R) R-640
CELITE(R) R-630
CHROMOSORB(R) G
CHROMOSORB(R) W
CHROMOSORB(R) P
chromosorb lc-1
Celite® 545
Celite[R] 535RV
KIESELGUHR WHITE
INFUSORIAL EARTH
Celite 545 2.5KG
Celite 545 500GR
CELATOM(R) FW-80
CELATOM(R) FW-60
SILICONE DIOXIDE
CELATOM(R) FW-50
CELATOM(R) FW-14
CELPURE(R) P1000
CELITE(R) 545 AW
Celite 545 Celite
EARTH DIATOMACEOUS
CHROMOSORB(R) W/AW
CHROMOSORB(R) LC-1
celite,acid-washed
HYFLO SUPER CEL(R)
Diatomaceous eartll
SILICA REAGENT NO 2
SILICA REAGENT NO 1
CELITE(R) FILTER CEL
KIESELGUHR, CALCINED
Diatomite,kieselguhr
FILTER AID, CELITE545
CELITE 545 FILTER AID
CELITE HYFLO SUPERCEL
STANDARD SUPER CEL(R)
RADIOLITE[R] HP 1600
RADIOLITE[R] HP 5000
CHROMOSORB(R) G/AW-DMCS
CHROMOSORB(R) W/AW-DMCS
Celite(R), acid-washed
Celite<sup></sup> 545RV
FILTER AID, CELATOMFW-14
FILTER AID, CELATOMFW-50
FILTER AID, CELATOMFW-60
FILTER AID, CELATOMFW-80
FILTER AGENT, CELITE 545
CELITE(R) 500 FILTER AID
CELITE(R) 535 FILTER AID
FILTER AID, DICALITE 4200
FILTER AID, CELITE(R) 545
HYFLO SUPERCET FILTER-AID
HYFLOSUPER-CEL FILTER AID
FILTER AID, CELITE(R) 521
CELITE, STANDARD SUPER CEL
Filter agent Celite(R) 545
FILTER AID, CELITE(R) 521AW
DIATOMACEOUS EARTH, CHARGED
FILTER AGENT, CELATOM FW-50
FILTER AGENT CELATOM FW-60
FILTER AGENT, CELATOM FW-14
FILTER AGENT, CELATOM FW-80
FILTER AID, CELATOM(R) FW-60
FILTER AID, CELATOM(R) FW-50
FILTER AID, CELATOM(R) FW-14
FILTER AID, CELATOM(R) FW-80
PRESEP(R) DIATOMACEOUS EARTH
Silicon dioxide, acid-washed
Filter agent Celatom(R) FW-14
SILICON DIOXIDE, DIATOMACEOUS
DIATOMACEOUS EARTH NON-WASHED
fluxcalcineddiatomaceousearth
CALCINATED DIATOMACEOUS EARTH
'CELITE' ANALYTICAL FILTER AID
Kieselguhr,sodaashflux-calcined
CELITE 545AW-REAGENT GRADE POUND
Diatomaceous Silica, Flux-Calcined
CHROMOSORB LC-1 PARTICLE SIZE 37-44
CHROMOSORB G ACID WASHED MESH SIZE45-60
CHROMOSORB W ACID WASHED MESH SIZE60-80
CHROMOSORB W ACID WASHED MESH SIZE45-60
KIESELGUHR PURIFIED AND CALCINED GR FOR
Celite(R) 281 filter aid, flux calcined
Celite(R) 535 filter aid, flux calcined
Calcinated diatomaceous earth
Diatomite
CHEMIZORB GRANULES ABSORBENT FOR SPILLED
EXTRELUT NT REFILL PACK FOR COLUMN FILLI
EXTRELUT NT PACKING MATERIAL FOR THE PRO
CHROMOSORB G ACID WASHED MESH SIZE 80- &
CHROMOSORB W ACID WASHED MESH SIZE 80- &
CHROMOSORB G ACID WASHED AND TREATED &
CHROMOSORB W ACID WASHED AND TREATED &
Celite(R) 110 filter aid, flux calcinated
Chemizorbgranulesabsorbentforspilledliquids
Diatomaceous earth, natural, respirable dust
CHROMOSORB W NON ACID WASHEDMESH SIZE 45 -60
CHROMOSORB G NON ACID WASHEDMESH SIZE 80 -100
Chromosorb W/AW,Diatomaceous earth, flux-calcined
CELITE, ACID WASHED, FOR TOTAL DIETARYFI BER ASSAY
CHROMOSORB W ACID WASHED ANDTREATED WITH DMCS SIZE
EXtrelut NT Refill pack for column fillings EXtrelut NT 20
Diatomaceous earth, flux-calcined filter aid, flux calcined
Diatomaceous Earth, Flux-Calcined, Flux calcined filter aid
Siliceous earth, purified and calcined, extra pure, USP, NF
Kieselguhr purified and calcined GR for analysis Reag. Ph Eur
Celite(R) 503 filter aid, treated with sodium carbonate, calcined
Filter aid, Celite? 545, treated with sodium carbonate, flux calcined
Celite(R) 545 filter aid, treated with sodium carbonate, flux calcined
Celite(R) 560 filter aid, treated with sodium carbonate, flux calcined
Filter aid, Celite|r 545, treated with sodiuM carbonate, flux calcined
EXtrelut NT packing material for the production of large extraction columns
Diatomaceous Earth, Flux-Calcined, Treated with sodium carbonate filter aid
Hyflo(R) Super Cel(R) filter aid, flux calcined, treated with sodium carbonate
Diatomaceous Earth, Flux-Calcined, Treated with sodium carbonate calcined filter aid
Diatomaceous earth, flux-calcined filter aid, treated with sodium carbonate, calcined
Diatomaceous Earth, Flux-Calcined, Treated with sodium carbonate acid washed,filter aid
Diatomaceous Earth, Flux-Calcined, Treated with sodium carbonate flux calcined filter aid
Diatomaceous earth, flux-calcined filter aid, treated with sodium carbonate, flux calcined
Chemical Properties
| Appearance | Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder |
| Melting point | >450℃ |
| density | 0.47 g/cm3 (loose weight)(lit.) |
| storage temp. | Store at RT. |
| solubility | <0.001g/l |
| form | rod (1/8") |
| color | 965 |
| PH | >8.5 (25℃, 10% in aq. suspension) |
| Water Solubility | Insoluble in water. |
| EPA Substance Registry System | Kieselguhr, soda ash flux-calcined (68855-54-9) |
Safety Data
| Hazard Codes | T,Xn |
| Risk Statements | |
| Safety Statements | |
| WGK Germany | 2 |
| RTECS | VV7311000 |
| TSCA | Yes |
| HS Code | 25120010 |
Hazard Information
Chemical Properties
white to off-white powder
Uses
Celite (R) 545 AW was used as stationary phase in purification of fagopyritols using preparative chromatography. Celite (R) 545 AW was used as packing material for fractionating procedure and the fractions were analysed using GC-ECD, GC/ECNI-MS 2 and IC-MS/MS.
Potential Exposure
Amorphous fumed silica is used as a mineral, natural or synthetic fiber. A potential danger to those involved in the production and handling of fumed silica for paint pigments or catalysts. Diatomaceous earth is used in clarifying liquids, in manufacture of fire brick and heat insulators; used as a filtering agent; as a filler in construction materials; pesticides, paints, and varnishes. A potential danger to those involved in mining of diatomaceous earth or fabrication of products there from.
First aid
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. If this chemical has been inhaled, remove from exposure. Transfer promptly to a medical facility.
Incompatibilities
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.
Definition
ChEBI: Silicon dioxide is a silicon oxide made up of linear triatomic molecules in which a silicon atom is covalently bonded to two oxygens.
General Description
Chromosorb? W is a diatomite which provides solid support for the packed GC columns. It is suitable for use with polar compounds, due to its low surface area and high inertness.
Health Hazard
Amorphous silica, natural
diatomaceous earth, is usually considered to be
of low toxicity; however, pure amorphous silica
is rarely found.
Flammability and Explosibility
Nonflammable
Carcinogenicity
Amorphous silica has been tested for carcinogenicity
in a variety of animal studies by a
number of routes. Most of the tests were negative
or were inadequate primarily because of
poorly defined physiochemical characteristics
of the silica. The IARC concluded that evidence
is inadequate to describe amorphous
silica as carcinogenic in either experimental
animals or humans. Crystalline silica, however,
has been designated by IARC as a probable
human carcinogen (category 2A), based on
“sufficient evidence” in experimental animals
and “limited evidence” in humans.Therefore,
although evidence for the carcinogenicity
of crystalline silica in humans is unconvincing,
certainly from exposures insufficient to cause
silicosis, appropriate hazard warnings are
obligatory in the United States. These apply
to all materials containing 0.1% or more of
crystalline silica (quartz, cristobalite, and/or
tridymite).
Supplier
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