Introduction：Basic information about DIATOMACEOUS EARTH CAS 68855-54-9, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
DIATOMACEOUS EARTH Basic information
| Product Name: | DIATOMACEOUS EARTH |
| Synonyms: | STANDARD SUPER CEL(R);SILICON DIOXIDE, DIATOMACEOUS;SILICONE DIOXIDE;SILICA REAGENT NO 2;SILICA REAGENT NO 1;NATRASORB T;PRIMISIL 1202;PRESEP(R) DIATOMACEOUS EARTH |
| CAS: | 68855-54-9 |
| MF: | O2Si |
| MW: | 60.084 |
| EINECS: | 272-489-0 |
| Product Categories: | Diatomite;Diatomaceous Earth;Chromosorb;Supports;Diatomaceous EarthSpecial Applications;Adsorbents, Filter Aids and Drying Agents;Essential Chemicals;Food&Beverage;Kits for Food Analysis;Packings, Coated;SP Phases;Packed GC;Carbowax Phases;UVCBs-inorganic |
| Mol File: | Mol File |
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DIATOMACEOUS EARTH Chemical Properties
| Melting point | >450℃ |
| bulk density | 300kg/m3 |
| density | 0.47 g/cm3 (loose weight)(lit.) |
| storage temp. | Store at RT. |
| solubility | <0.001g/l |
| form | rod (1/8") |
| color | white |
| PH | >8.5 (25℃, 10% in aq. suspension) |
| Water Solubility | Insoluble in water. |
| Specific Activity | ≤1EU/g (endotoxin) |
| Major Application | food and beverages
general analytical |
| InChI | 1S/O2Si/c1-3-2 |
| InChIKey | VYPSYNLAJGMNEJ-UHFFFAOYSA-N |
| SMILES | O=[Si]=O |
| EPA Substance Registry System | Kieselguhr, soda ash flux-calcined (68855-54-9) |
Safety Information
| Hazard Codes | T,Xn |
| Risk Statements | 48/20-49-36/37-36/38-45-36/37/38 |
| Safety Statements | 22-36-26-53-45-36/37/39-39 |
| WGK Germany | 2 |
| RTECS | VV7311000 |
| TSCA | TSCA listed |
| HS Code | 3802 90 00 |
| Storage Class | 6.1D - Non-combustible acute toxic Cat.3
toxic hazardous materials or hazardous materials causing chronic effects |
| Hazard Classifications | STOT RE 1 Inhalation |
DIATOMACEOUS EARTH Usage And Synthesis
| Chemical Properties | white to off-white powder |
| Chemical Properties | Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous 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. |
| Uses | Production of filters, polishes,absorbents, insulators. |
| Uses | Diatomaceous earth may be used as an adsorbent for column chromatography. |
| 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, naturaldiatomaceous earth, is usually considered to beof low toxicity; however, pure amorphous silicais rarely found. |
| Flammability and Explosibility | Non flammable |
| 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. |
| Carcinogenicity | Amorphous silica has been tested for carcinogenicityin a variety of animal studies by anumber of routes. Most of the tests were negativeor were inadequate primarily because ofpoorly defined physiochemical characteristicsof the silica. The IARC concluded that evidenceis inadequate to describe amorphoussilica as carcinogenic in either experimentalanimals or humans. Crystalline silica, however,has been designated by IARC as a probablehuman carcinogen (category 2A), based on“sufficient evidence” in experimental animalsand “limited evidence” in humans.Therefore,although evidence for the carcinogenicityof crystalline silica in humans is unconvincing,certainly from exposures insufficient to causesilicosis, appropriate hazard warnings areobligatory in the United States. These applyto all materials containing 0.1% or more ofcrystalline silica (quartz, cristobalite, and/ortridymite). |
| 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. |
DIATOMACEOUS EARTH Preparation Products And Raw materials
| Raw materials | Flux No. 310 SPECTROFLUX |
| Preparation Products | 2-CHLORO-4,5-DIAMINOPYRIDINE HYDROCHLORIDE-->6-CHLORO-3,4-PYRIDINEDIAMINE |
