ChemicalBook > CAS DataBase List > Silica gel

Silica gel

Product Name
Silica gel
CAS No.
112926-00-8
Chemical Name
Silica gel
Synonyms
COLLOIDAL SILICA;SAND;SILICA GEL 60;SILICA GEL DESICCANT;IATROBEADS;SILICA STANDARD;SILICA GEL ORANGE;silicagel,pptd.,cryst.-free;SILICA GEL 60 FOR COLUMN CHROMATOGRAPHY;gsj-30
CBNumber
CB1199389
Molecular Formula
O2Si
Formula Weight
60.0800018310547
MOL File
Mol file
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Silica gel Property

Melting point:
1610°C
Boiling point:
2230℃
Density 
2.6
bulk density
750-800kg/m3
Flash point:
23°C
storage temp. 
2-8°C
form 
powder or granules
Specific Gravity
0.88g/ml
color 
blue
PH
~6.8 (10% in aq. suspension)
Odor
Odorless
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)
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Safety

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
OEB
B
OEL
TWA: 6.0 mg/m3
RIDADR 
1993
WGK Germany 
2
RTECS 
VV7315000
F 
3
Hazard Note 
Harmful/Irritant
TSCA 
Yes
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P201Obtain special instructions before use.

P273Avoid release to the environment.

P308+P313IF exposed or concerned: Get medical advice/attention.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
SX0143L
Product name
Silica Gel Grade 923
Purity
100-200 Mesh
Packaging
500G
Price
$888
Updated
2025/07/31
Sigma-Aldrich
Product number
97729-U
Product name
Flash Silica
Purity
dried,pkgof1?kg,spherical
Packaging
1kg
Price
$8410
Updated
2025/07/31
Sigma-Aldrich
Product number
89943
Product name
Silica gel
Purity
for column chromatography, 60
Packaging
1kg
Price
$365
Updated
2025/07/31
Sigma-Aldrich
Product number
717185
Product name
Silica gel
Purity
technical grade, pore size 60??, 230-400?mesh particle size, 40-63?μm particle size
Packaging
1KG
Price
$110
Updated
2025/07/31
Sigma-Aldrich
Product number
78991
Product name
Silica gel spherical
Purity
75-200?μm particle size
Packaging
100G
Price
$128
Updated
2025/07/31
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Silica gel Chemical Properties,Usage,Production

Chemical Properties

white to off-white powder

Chemical Properties

Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder

Occurrence

Silica gels are dispersions of colloidal silica obtained by a sol–gel process. The process consists in precipitating colloidal silica from an aqueous solution of sodium silicate by adding hydrochloric or sulfuric acid. The colloidal precipitate or gel consists mainly of hydrated silica (SiO2 .nH2 O). After filtration the precipitated silica is washed in order to remove residual salts and stabilized by adding ammonia or sodium hydroxide. The stabilized gel is then dried and later calcined to obtain an activated material, usually in the form of small beads.

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.

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.

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 prolonged oven drying. Alternatively, silica gel has been extracted with acetone until all soluble material was removed, then dried in a current of air, washed with distilled water and oven dried. Silica gel has also been washed successively with water, M HCl, water, and acetone, then activated at 110o for 15hours. Silicon monoxide [10097 -28 -6] M 44.1, m > 1700o, d 4 2.18. Purify the monoxide by sublimation in a porcelain tube in a furnace at 1250o (4hours) in a high vacuum (10-4mm) in a stream of N2. It is obtained as brownish black scales. [Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 696 1963.]

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.

Toxics Screening Level

The initial threshold screening level (ITSL) for Silica gel is 60 μg/m3 based on an 8-hour averaging time.

Waste Disposal

Sanitary landfill.

Silica gel Preparation Products And Raw materials

Raw materials

silica gel fine-pored lump Poly(ethylene glycol) dimethacrylate Silica gel,microporous roundness Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, hydrolysis products with silica Cobalt chloride

Preparation Products

Coenzyme Q10 VINYL FLUORIDE Lamivudine Bis(pyridine)iodonium tetrafluoroborate 4-DIMETHYLAMINOBUTYLAMINE nitrobenzene hydrogenation catalyst for making aniline 2-(TRIFLUOROMETHYL)PYRIMIDINE-5-CARBONYL CHLORIDE Paclitaxel 2-(TRIFLUOROMETHYL)PYRIMIDIN-5-AMINE ETHYL 2-(TRIFLUOROMETHYL)PYRIMIDINE-5-CARBOXYLATE Cladribine 4-ISOCYANOBENZOPHENONE 4-(DIETHYLAMINO)BUTYLAMINE (2-(TRIFLUOROMETHYL)PYRIMIDIN-5-YL)METHANOL 2'-BENZYLOXYACETOPHENONE Tacalcitol Lanoconazole Prednicarbate 3-Nitroisonicotinic acid Cidofovir 2-Methylbutane Dodecylamine 4-Amino-2-chloropyrimidine silver nickel catalyst 2-(TRIFLUOROMETHYL)PYRIMIDINE-5-CARBOXYLIC ACID Carbon tetrafluoride Sertaconazole nitrate SEMOTIADIL Pyribenzoxim Montelukast Naphthalene oxidation catalyst Pirarubicin BUCILLAMINE (2-(TRIFLUOROMETHYL)PYRIMIDIN-5-YL)METHANAMINE FNG silica gel 3-Methyl-4-(methylthio)phenol 2-(Methylamino)pyridine Decylamine 2-(TRIFLUOROMETHYL)PYRIMIDINE-5-CARBOXAMIDE 1-(2-Methoxyphenyl)piperazine
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View Lastest Price from Silica gel manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
Silica gel 112926-00-8
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-05
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
Product
Silica gel 112926-00-8
Price
US $100.00-75.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000
Release date
2024-08-21
Hebei Zhuanglai Chemical Trading Co Ltd
Product
Silica gel 112926-00-8
Price
US $45.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 tons
Release date
2024-12-23

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