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Silicon Dioxide

Silicon Dioxide

CAS Number: 7631-86-9

Molecular Formula: O2Si

About Silicon Dioxide

Silicon Dioxide (CAS No: 7631-86-9), commonly known as silica, is one of the world's most versatile inorganic materials, serving as a foundational raw material across advanced manufacturing, electronics, pharmaceuticals, personal care, food processing, and high-performance industrial applications. Renowned for its exce...

Synonyms

  • Diatomaceous earth
  • Silica gel
  • Infusorial earth
  • Celite
  • Glass
View all

Silicon Dioxide Specifications

CAS Number
7631-86-9
Molecular Formula
O2Si
IUPAC Name
dioxosilane
Canonical SMILES
O=[Si]=O
InChI Key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
InChI
InChI=1S/O2Si/c1-3-2
UNII Code
ETJ7Z6XBU4
ChEBI ID
CHEBI:30563
HMDB ID
HMDB0035659
DSSTox Substance ID
DTXSID1029677
EINECS Number
231-545-4
MDL Number
MFCD00011232
HSN No
28112200
Melting_point
3110°F (NIOSH, 2024)
Boiling_point
4046°F at 760 mmHg (NIOSH, 2024)
Solubility
Insoluble (NIOSH, 2024)
Density (Experimental)
Density 2.2 g/cm³
pKa (Experimental)
2-2.5 (approx)
Hazard Classes and Categories
Serious eye damage/eye irritation - Category 2 Carcinogenicity - Category 1A Specific target organ toxicity - Single exposure - Category 3 (Respiratory tract irritation) Specific target organ toxicity - Repeated exposure - Category 1 (respiratory system, immune system, kidney)

Construction Materials

A primary component used in the manufacturing of glass, concrete, cement, and ceramics to provide structural strength and durability

Electronics Industry

A critical insulating layer and substrate material utilized in semiconductor devices and integrated circuits

Food and Pharmaceutical Industries

An anti-caking agent and excipient used to improve flowability in powdered products and assist in tablet manufacturing

Cosmetics Industry

An abrasive, bulking, and light-diffusing agent incorporated into toothpastes and personal care formulations

  1. Diatomaceous earth
  2. Silica gel
  3. Infusorial earth
  4. Celite
  5. Glass

Silicon Dioxide FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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