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Supply Silicon Dioxide CAS 7631-86-9 Fumed Silica Sio2 Powder

Name: Supply Silicon Dioxide CAS 7631-86-9 Fumed Silica Sio2 Powder
Brand: TNJONE
SKU: pr2407311285
Price: 590 USD
Availability: InStock

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Unit Price:

$590-690/KG FOB

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CAS No.:

7631-86-9

Grade:

Food Grade

Content:

99%

Port:

China Port

Brand:

TNJONE

Packaging:

1kg,25kg or according to customer's detail requirement.

Price valid (until):

2028-01-31

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Shaanxi TNJONE Pharmaceutical Co., Ltd

Company Type:

Manufactory

Location:

China

Payment Terms:

TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance

Average Lead Time:

5 days

Qualification:

Main Products:

Semaglutide,Tirzepatide,API,Vitamins,Food Additive

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Product Description

What is Silicon Dioxide?

Silicon dioxide, an inorganic compound with the chemical formula SiO2, is a long-range ordered arrangement of silicon and oxygen atoms to form crystalline silicon dioxide and a short-range ordered or long-range disordered arrangement to form amorphous silicon dioxide.
Silicon dioxide has the chemical formula SiO2 and is available in both crystalline and amorphous forms.
Silicon dioxide has a wide range of uses, mainly used in the production of glass, water glass, pottery, enamel, refractory materials, aerogel felt, ferrosilicon, type sand, monomorphous silica, cement, etc. In ancient times, silicon dioxide was also used to make glaze and carcasses for porcelain.

Items	Specifications
Product name	Silicon Dioxide
CAS No.	7631-86-9
MF	O2Si
MW	60.08
EINECS.No	231-545-4
Melting Point	>1600 °C(lit.)
Boiling Point	>100 °C(lit.)
Density	2.2-2.6 g/mL at 25 °C
Appearance	White Powder
Shelf Life	2 Years When Properly Stored
Storage	Keep in a cool, dry, dark location in a tightly sealed container or cylinder.

Specification

Items	Index
Appearance	White powder
Model	ZY-VK-SP30F
APS,nm	30
SSA,m2/g	150±30
Hydroxy Content %	≥90
Surface treatment	Increased surface activity treatment
Nano silica content %	≥99.5
PH	6-8
Loss on Ignition(%)850ºCx2h	≤6.0

Silicon dioxide Chemical Properties

Melting point	>1600 °C(lit.)
Boiling point	>100 °C(lit.)
density	2.2-2.6 g/mL at 25 °C
vapor pressure	13.3hPa at 1732℃
refractive index	1.46
Fp	2230°C
storage temp.	2-8°C
solubility	Practically insoluble in water and in mineral acids except hydrofluoric acid. It dissolves in hot solutions of alkali hydroxides.
form	suspension
pka	6.65-9.8[at 20 ℃]
Specific Gravity	2.2
color	White to yellow
PH	5-8 (100g/l, H2O, 20℃)(slurry)
Odor	at 100.00?%. odorless
Water Solubility	insoluble
Hydrolytic Sensitivity	6: forms irreversible hydrate
Sensitive	Hygroscopic
Merck	14,8493
Exposure limits	NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3
Stability:	Stable.
CAS DataBase Reference	7631-86-9(CAS DataBase Reference)
NIST Chemistry Reference	Silicon(iv) oxide(7631-86-9)
IARC	3 (Vol. Sup 7, 68) 1997
EPA Substance Registry System	Silica (7631-86-9)

Application

1. It is beneficial to enhance the adhesion of the slurry to the fiber, and there is strong or weak hydrogen bonding between the active hydroxyl group on the surface and the hydroxyl group on the starch and cotton fiber, which can effectively improve the sizing performance of pure cotton and polyester cotton yarn.

2, nano silica is more conducive to the sizing of cellulose fibers.

3, with the effect of enhancing and increasing wear and reducing hair.

4. The slurry film of nano-silica mixed slurry has abrasion resistance compared with that of pure starch slurry.

5, improve the integrity and penetration rate of the slurry film.

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ECHEMI Editorial Reference

Diatomaceous earth is a transparent to gray, odorless amorphous powder. Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder white crystals or powder
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.
Silica is an inert, naturally occurring mineral used as a carrier in some pesticide products and is sometimes used as an insecticide to control crawling insects, acting via its abrasive and desiccant properties. It is moderately soluble in water and stable in the environment. It is generally considered non-toxic to biodiversity and humans. However, there are some concerns that exposure to crystalline silica particles that are small enough to reach the lungs can cause lung cancer.
white crystals or powder
ChEBI: A silicon oxide made up of linear triatomic molecules in which a silicon atom is covalently bonded to two oxygens.

Certificates

Basic Info

Product Name:

Silicon dioxide

Other Name:

SILICA GEL 60 PF254 FOR PREPARATIVE LAYE;LICHROSORB SI 100 (10 MYM) 10 G;TLC-SILICA GEL 60 GF254 MEAN PARTICLE SI;LICHROSORB SI 100 (10 MYM) 100 G;SEA SAND EXTRA PURE 5 KG;SILICA GEL 60 GF254 FOR THIN-LAYER CHROM;SILICA GEL 60 PF254 + 366 FOR PREPARATIV;SEA SAND EXTRA PURE 25 KG

CAS No.:

7631-86-9

Molecular Formula:

O2Si

InChIKeys:

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Molecular Weight:

60.08

Exact Mass:

60.08

EC Number:

231-545-4

TSCA:

TSCA listed

Color/Form:

White to yellow

HScode:

2811221000

Categories:

Other Chemical Drugs

Characteristics

PSA:

34.14000

Physical Properties:

Colorless amorphous (i.e., fused silica) or crystalline (i.e., quartz) material having a low thermal expansion coefficient and excellent optical transmittance in far UV. Silica is insoluble in strong mineral acids and alkalis except HF, concentrated H3PO4, NH4HF2, concentrated alkali metal hydroxides. Owing to its good corrosion resistance to liquid metals such as Si, Ge, Sn, Pb, Ga, In, Tl, Rb, Bi, and Cd, it is used as crucible container for melting these metals, while silica is readily attacked in an inert atmosphere by molten metals such as Li, Na, K Mg, and Al. Quartz crystals are piezoelectric and pyroelectric. Maximum service temperature 1090°C.

XLogP3:

-0.61840

Appearance:

White to yellow suspension

Density:

2.2-2.6 g/mL at 25 °C

Melting Point:

>1600 °C(lit.)

Boiling Point:

>100 °C(lit.)

Flash Point:

2230°C

Refractive Index:

1.46

Water Solubility:

insoluble

Storage Conditions:

Refrigerator (+4°C)

Vapor Pressure:

13.3hPa at 1732℃

Toxicity:

LC inhalation in rat: > 200gm/m3/1H

Flammability characteristics:

Noncombustible Solid

Explosive limit:

Silica gel at -78 deg C adsorbs 4.5 wt % of ozone, and below this temperature the concentration increases rapidly. At below -112 deg C ozone liquefies and there is a potential explosion hazard at temperatures below -100 deg C if organic material is present.

Odor:

at 100.00%. odorless

Taste:

Tasteless

PH:

5-8 (100g/l, H2O, 20℃)(slurry)

PKA:

6.65-9.8[at 20 ℃]

Critical Temperature & Pressure:

2-8°C

See More Silicon dioxide Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Silicon dioxide Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
Semaglutide,Tirzepatide,API,Vitamins,Food Additive

Location:
No. 4C-11-A392, Financial Port, Northwest corner of Fengjing Avenue and Fengxin Road, Fengdong New City, Xi 'an, Shaanxi Province

Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
5 days

Total Annual Revenue:
$5 million-$10 million

Total Employees:
11-50

Year of Establishment:
2019

Shaanxi TNJONE Pharmaceutical Technology Co., LTD., located in the beautiful ancient capital Xi 'an, is committed to the peptide industry, pharmaceutical raw materials, food and feed additives, veterinary drugs and other fields, the enterprise adhering to provide customers with quality service, supply high-quality products, "world peace and health" as its responsibility, the company adhering to the "meet all customer requirements for products" as the service concept, Guarantee "provide qualified products" as the service principle, so that you get "God-like" noble shopping enjoyment. Our company has more than 1000 kinds of polypeptides, raw materials inventory, at any time to meet the various needs of customers for products. Is your best partner.

Inquiry History

72 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	Silicon dioxide	30.00 KG	Jun 13, 2025
Kenya	Silica Dioxide	1 MT	Oct 27, 2023
United States	Octadecyl Bonded Phase Filler	100 KG	Jun 15, 2024
United States	black diesel oil bleaching chemical	100 TON	Jun 13, 2024
Belgium	Silicon dioxide	100.00 KG	Jun 5, 2025
Georgia	Colloidal silicon dioxide	50 KG	Mar 25, 2024
Bangladesh	COLLOIDAL ANHYDROUS SILICA (AEROSIL-200)	2000 KG	Aug 18, 2026
Bangladesh	COLLOIDAL ANHYDROUS SILICA (AEROSIL-200)	2000 KG	Aug 7, 2026
India	Silica mesoporous, 1 μm particle size, pore size ~2 nm	15.3 G	Apr 18, 2025
India	Silicon dioxide	100 KG	Jul 13, 2026
India	Silica	2000.00 KG	Apr 23, 2026
South Korea	Silica 96%	1 KG	Apr 16, 2026
Egypt	silicon dioxide	1 KG	Mar 2, 2026
Brazil	Thermal Silica Aerogel Granular Powder	1 KG	Feb 26, 2026
India	Tysil 175 Silica	2000.00 KG	Feb 26, 2026
India	Silicon Dioxide	1.00 KG	Feb 11, 2026
Singapore	Silicon Dioxide	1 KG	Feb 10, 2026
India	Silicon Dioxide	1.00 KG	Feb 6, 2026
Germany	Silicon Dioxide	1 40' Fcl	Feb 4, 2026
Kazakstan	Sio2	112	Jan 26, 2026

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Supply Silicon Dioxide CAS 7631-86-9 Fumed Silica Sio2 Powder

Product Description

Seller Information

Inquiry History

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

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