Silicon dioxide CAS#7631-86-9

Stable and reliable performance: It has stable physical and chemical properties, acid, alkali, high temperature and corrosion resistance, suitable for diverse production scenarios.


Efficient and versatile functions: It has excellent adsorption, anti-caking, dispersing, thickening and thixotropic properties with good powder fluidity.


Safe and compliant: Non-toxic and non-irritating, environmentally friendly, compliant with standards for food, pharmaceutical and daily chemical industries.


Standard storage & operation: Store in sealed, dry, cool and ventilated conditions; keep away from corrosive materials. Wear dust-proof protective equipment, avoid moisture and damage, and use within shelf life.


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Product Description

Product Description of Silicon dioxide CAS#7631-86-9

Silicon dioxide is an inorganic non-metallic powder material. It is fine odorless and tasteless white powder under normal condition. It owns stable physical and chemical properties, hardly reacts with common acid and alkali, and keeps stable during storage.


Product Application of Silicon dioxide CAS#7631-86-9

Widely used in multiple industries, silicon dioxide can be used as anticaking agent, flow aid, adsorbent, thickener, reinforcing filler and matting agent. It is applied in food processing to prevent powder agglomeration, in pharmaceuticals as a safe pharmaceutical excipient, in rubber and plastic products to improve hardness and wear resistance, in daily cosmetics to adjust material texture, in feed industry to maintain material looseness, and in coatings and inks for thickening and matting to optimize coating molding effects, covering various industrial and civil production fields.

Product Information

Parameters


Melting point

>1600 °C(lit.)

Boiling point

>100 °C(lit.)

density

2.2-2.6 g/mL at 25 °C

bulk density

200-800kg/m3

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

Odor

at 100.00%. odorless

PH

5-8 (100g/l, H2O, 20℃)(slurry)

Resistivity

1∞10*20 (ρ/μΩ.cm)

Water Solubility

insoluble

Sensitive

Hygroscopic

Hydrolytic Sensitivity

6: forms irreversible hydrate

Crystal Structure

Trigonal

Merck

148,493

Exposure limits

NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3

Stability:

Stable.

Cosmetics Ingredients Functions

BULKING

ABSORBENT

OPACIFYING

ABRASIVE

VISCOSITY CONTROLLING

ANTICAKING

InChI

1S/O2Si/c1-3-2

InChIKey

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

SMILES

[Si](=O)=O

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)

ECETOC JACC REPORT

Silicon dioxide (7631-86-9)


Safety Information


Hazard Codes

Xn,Xi

Risk Statements

36/37/38-36/37-22-43-52/53-36/38

Safety Statements

26-37/39-36-36/37/39-36/37-61

OEB

B

OEL

TWA: 6 mg/m3

WGK Germany

nwg

RTECS

VV8853000


Factory Showcase

拼图_美图设计室-(1)

Quality Control Lab

实验室

Shipping And Transportation

拼图_美图设计室

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Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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