7631-86-9 Usage
General Description
Different sources of media describe the General Description of 7631-86-9 differently. You can refer to the following data:
1. Silicon dioxide occurs almost everywhere on earth. It is one of the most important and abundant oxides on earth, constituting about 60% weight of the earth’s crust as silica itself or in combination with other metal oxides in silicates. It commonly is found as sand in the vast ocean and river shores, their beds, deserts, rocks, and minerals.
Silicon dioxide exists in several structural forms: polymorphic crystalline silica, synthetic quartz crystals, amorphous silica, and vitreous silica. This classification is not complete as there are other forms of silica synthesized for specialized applications.
2. contains sodium stabilizing counterion
Uses
Different sources of media describe the Uses of 7631-86-9 differently. You can refer to the following data:
1. ▼▲
Industry
Application
Role/benefit
Food
Powdered foods, such as salt, many spices, etc.
Ant-caking agent/ when added to a mixture, prevents its ingredients from binding together
Nutritional health food supplements
Source of silicon/maintain healthy strong bones and joints and minimizes aluminum effects on the body
Wine, beer and juice
Fining agent
Chemical manufacture
Manufacture of silicon compounds and sodium silicate
Raw material
Construction
Production of portland cement
Raw material
Sand casting
Main ingredient/high melting point
Glass
High purity silica glass
Raw material/high temperature and corrosion resistance
Domestic glass and optical devices
Essential component
Ceramics
Manufacture of ceramic glaze
Main constituents/forms glass when heated to bind others ingredients together
Metallurgy
Manufacture of silicon alloys
Raw material or additive
Pharmaceutical
Drug tablets making
Flow agent/aids powder flow when tablets are formed
Preventing Alzheimer’s disease
Effective components/minimizes aluminum effects on the body which may cause Alzheimer’s disease
Electronics
Fiber optic cables
Raw material/high level of heat conductivity and low rate of transmission loss
Wire insulation
Raw material/high melting point and good insulating property
Semi-conductors
Source of silicon
Piezoelectric transducer
Main component/can convert mechanical energy to electrical energy and vice-versa
Others
Refractory materials
Main component/high melting point and high shock resistance
Rubber and plastics
Additive/improves wearing capacity
DNA Extraction
Source of silicon/has binding properties which help to isolate the strands of DNA
Manufacture of silica gel
Source of silicon/hygroscopic property
Defoaming
Defoamer component
Silica-based aerogel
Source of silicon
Hydraulic fracturing
Thickening agent
2. silica is also known as silicone dioxide. Silica has a variety of applications: to control a product’s viscosity, add bulk, and reduce a formulation’s transparency. It can also function as an abrasive. In addition, it can act as a carrier for emollients, and may be used to improve a formulation’s skin feel. Spherical silica is porous and highly absorbent, with absorption capabilities roughly 1.5 times its weight. A typical claim associated with silica is oil control. It is found in sunscreens, scrubs, and wide range of other skin care, makeup, and hair care preparations. It has been successfully used in hypoallergenic and allergy-tested formulations.
3. Silica (SiO2) (RI: 1.48) is mined from deposits of diatomaceous soft
chalk-like rock (keiselghur). This is an important group of extender pigments,
which is used in a variety of particle sizes. They are used as a
flatting agent to reduce gloss of clear coatings and to impart shear thinning
flow properties to coatings. They are relatively expensive.
4. Silicon(IV) oxide, amorphous is used as carriers, processing aids, anti-caking and free-flow agents in animal feed. Defoamer applications such as paint, food, paper, textile and other industrial applications. Synthetic silicon dioxides are used as a rheology control agent in plastics. It is also used to manufacture adhesives, sealants and silicones.
5. Functionalized RAFT agent for controlled radical polymerization; especially suited for the polymerization of styrene; acrylate and acrylamide monomers. Azide group can be used to conjugate to a variety of alkyne-functionalized biomolecules. Chain Transfer Agent (CTA).
6. SDS mixture of sodium alkyl sulfates consisting chiefly of sodium lauryl sulfate
7. manufacture of glass, water glass, refractories, abrasives, ceramics, enamels; decolorizing and purifying oils, petroleum products, etc.; in scouring- and grinding-compounds, ferrosilicon, molds for castings; as anticaking and defoaming agent.
Chemical Properties
white crystals or powder
Definition
ChEBI: A silicon oxide made up of linear triatomic molecules in which a silicon atom is covalently bonded to two oxygens.
Hazard
Not toxic if ingested, inhaled silica dust can
cause silicosis; carcinogen.
Agricultural Uses
Silica is silicon dioxide, one of the most abundant
materials on the earth's crust. Quartz is an example of
silica. It is used as a filler in fertilizers, and also, in the
manufacture of glass, ceramics, abrasives, rubber and
cosmetics.
Safety Profile
The pure unaltered form is considered a nuisance dust. Some deposits contain small amounts of crystahne quartz and are therefore fibrogenic. When diatomaceous earth is calcined (with or without fluxing agents) some sdica is converted to cristobalite and is therefore fibrogenic. Tridymite has never been detected in calcined batomaceous earth. See also other silica entries
Check Digit Verification of cas no
The CAS Registry Mumber 7631-86-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,3 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7631-86:
(6*7)+(5*6)+(4*3)+(3*1)+(2*8)+(1*6)=109
109 % 10 = 9
So 7631-86-9 is a valid CAS Registry Number.
InChI:InChI=1/O2Si/c1-3-2
7631-86-9Relevant articles and documents
Development of Highly Active Silica-Supported Nickel Phosphide Catalysts for Direct Dehydrogenative Conversion of Methane to Higher Hydrocarbons
Dipu, Arnoldus Lambertus,Nishikawa, Yuta,Inami, Yuta,Iguchi, Shoji,Yamanaka, Ichiro
, p. 199 - 212 (2021/04/19)
The direct dehydrogenative conversion of methane (DCM) to higher hydrocarbons was investigated over silica-supported nickel phosphide catalysts (NixPy/SiO2) over 1023?K. NixPy/SiO2 catalysts were prepared by precipitation method to promote formation of nickel phosphide (Ni2P) as an active phase for the DCM reaction. Characterization studies of the NixPy/SiO2 catalysts with different P/Ni molar ratios were conducted by a X-ray diffraction analysis, a H2-temperature-programmed reduction spectrum, a scanning electron microscopy image, a X-ray absorption spectroscopy and a N2-adsorption measurement. Catalytic activity tests for the DCM reaction were conducted using a conventional fixed-bed reactor. Products of C2H4 (ethylene), C2H6 (ethane), C2H2 (acetylene), C3H6 (propylene), C6H6 (benzene), C7H8 (toluene), C10H8 (naphthalene) and H2 were analyzed by GC-TCD and GC-FID instruments. Different degrees of the Ni2P phase and character were observed for the NixPy/SiO2 catalysts from characterization studies. Data from characterization studies indicated that smaller and dispersed Ni2P particles were obtained by precipitation method as compared to that of impregnation method. NixPy/SiO2 with a molar ratio of P/Ni = 3.0 showed optimum catalytic performance with 3.28% of methane conversion, 1.93% of total product yield, and 60% of selectivity to hydrocarbons. The experimental results of the effects of reaction temperatures on the product distributions and activation energies indicated that the Ni2P phase successfully activated the C–H bond of methane and selectively converted to ethane. Ethane thermally converted to other higher hydrocarbons in the gas phase without the participation of the catalyst. Graphic Abstract: [Figure not available: see fulltext.].
Non-Cryogenic, Ammonia-Free Reduction of Aryl Compounds
-
, (2022/03/31)
A method of reducing an aromatic ring or a cyclic, allylic ether in a compound includes preparing a reaction mixture including a compound including an aromatic moiety or a cyclic, allylic ether moiety, an alkali metal, and either ethylenediamine, diethylenetriamine, triethylenetetramine, or a combination thereof, in an ether solvent; and reacting the reaction mixture at from ?20° C. to 30° C. for a time sufficient to reduce a double bond in the aromatic moiety to a single bond or to reduce the cyclic, allylic ether moiety.
COMPOUND FOR INHIBITING PGE2/EP4 SIGNALING TRANSDUCTION INHIBITING, PREPARATION METHOD THEREFOR, AND MEDICAL USES THEREOF
-
, (2022/03/14)
A compound of formula (I), a preparation method therefor, a pharmaceutical composition containing a derivative thereof, and the therapeutic uses thereof, especially inhibiting PGE2/EP4 signalling transduction and the uses thereof for treating cancer, acute or chronic pain, migraine, osteoarthritis, rheumatoid arthritis, gout, bursitis, ankylosing spondylitis, primary dysmenorrhea, tumour or arteriosclerosis.