Factory price Silica gel CAS 112926-00-8 in stock

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Factory price Silica gel CAS 112926-00-8 in stock

Details

Silica gel Basic information
Product Name:    Silica gel
Synonyms:    Silica gel GF Pre-coated Plate for TLC;High Silica gel HF254 Pre-coated Plate for TLC;Silica gel H Pre-coated Plate for TLC;AEROSIL(TM) 200;Silica gel G Pre-coated Plate for TLC;High Silica gel GF Pre-coated Plate for TLC;silica,amorphous,precipitatedandgel;silicagel,pptd.,cryst.-free
CAS:    112926-00-8
MF:    O2Si
MW:    60.0800018310547
EINECS:    601-214-2
Product Categories:    Silica TLC Adsorbent, with fluorescent indicator, no binder;Silica Gels;Adsorbents (Inorganic);LPLC Separation Media;Davisil SilicaEssential Chemicals;Resins&LC Separation Media;UVCBs-inorganic;Silica;Silica Gels;metals scavenging agent;supported alkali metal;Desiccators and Desiccants;Desiccants;Labware;Davisil GradesResins&LC Separation Media;Davisil Silica;Essential Chemicals;Silica TLC Adsorbent, no binder, no fluorescent indicator;Silica TLC Adsorbents;SilicaBulk Adsorbents for TLC;Fluka brand Silica, TLC AdsorbentBulk Adsorbents for TLC;Silica TLC Adsorbent, with binder, no indicator;Bulk Adsorbents for TLC;Other Silica Gels;Fluka brand Silica, TLC Adsorbent
Mol File:    Mol File
Silica gel Structure
Silica gel Chemical Properties
Melting point     1610°C
Boiling point     2230℃
density     2.6
Fp     23°C
storage temp.     2-8°C
form     powder or granules
color     blue
Specific Gravity    0.88g/ml
Odor    Odorless
PH    ~6.8 (10% in aq. suspension)
PH Range    About 7.0
Water Solubility     Insoluble in water
Hydrolytic Sensitivity    6: forms irreversible hydrate
Merck     14,8493
CAS DataBase Reference    112926-00-8
EPA Substance Registry System    Silica gel, pptd., cryst.-free (112926-00-8)
Safety Information
Hazard Codes     Xi,T,N,Xn
Risk Statements     20-37-42/43-49-36/37-48/20-51/53-68-50/53-41-22-60
Safety Statements     22-24/25-45-36/37-53-26-36-61-60-39
RIDADR     1993
WGK Germany     2
RTECS     VV7315000
F     3
Hazard Note     Harmful/Irritant
TSCA     Yes
MSDS Information
Provider    Language
Silica gel    English
Silica gel 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    Silica gel was used on glass plates for preparative TLC and on aluminium sheets for analytical TLC. Silica gel was used in vacuum chromatography and TLC. Silica gel was used in column chromatography.
Uses    Silica Gel, 40-63 Micron Particles (cas# 112926-00-8) is a compound useful in organic synthesis.
Uses    Silica gel was used to compare MCM-41 type mesoporous adsorbents.
Definition    A gel made by coagulating sodium silicate sol. The gel is dried by heatheating and used as a catalyst support and as a drying agent. The silica gel used in desiccators and in packaging to remove moisture is often colored with a cobalt salt to indicate whether it is still active (blue=dry; pink=moist).
Definition    A rigid gel made by coagulatinga sol of sodium silicate andheating to drive off water. It is usedas a support for catalysts and also asa drying agent because it readily absorbsmoisture from the air. The gelitself is colourless but, when used indesiccators, etc., a blue cobalt salt isadded. As moisture is taken up, thesalt turns pink, indicating that thegel needs to be regenerated (by heating).
General Description    Silica gel is a rigid 3D network of colloidal silica. It is exclusively used as a support material for the active titanium(III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation lresulting in the formation of uniform polymer particles with narrow particle size distribution and high bulk density. Silica gel is classified as below:
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction
Agricultural Uses    A hard granular hygroscopic form of hydrated silica is called silica gel. It is made by heating a coagulated sol of sodium silicate. It is used as a catalyst and a desiccant.
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.
Purification Methods    Before use as a drying agent, silica gel is heated in an oven, then cooled in a desiccator. Conditions in the literature range from heating at 110o for 15hours to 250o for 2-3hours. Silica gel has been purified by washing with hot acid (in one case successively with aqua regia, conc HNO3, then conc HCl; in another case it was digested overnight with hot conc H2SO4), followed by exhaustive washing with distilled water (one week in a Soxhlet apparatus has also been used), and prolon

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