The physical form and particle size are not determined for this product. Historical data suggests an average particle size of 0.22 mm with 98% being less than 0.315 mm. However, this testing is not performed routinely, nor is it included as a product specification.
18649
Silicon dioxide
acid washed
Synonym(s):
Cristobalite, Quartz, Sand, Silica
Sign Into View Organizational & Contract Pricing
Select a Size
1 KG
₪529.00
2.5 KG
₪1,089.00
6 X 1 KG
₪3,321.00
6 X 2.5 KG
₪7,080.00
All Photos(1)
Select a Size
Change View
1 KG
₪529.00
2.5 KG
₪1,089.00
6 X 1 KG
₪3,321.00
6 X 2.5 KG
₪7,080.00
About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
SB.52
Recommended Products
form
solid
Quality Level
quality
acid washed
impurities
≤0.01% in acid soluble iron (Fe)
≤0.5% soluble in HCl
loss
≤0.5% loss on ignition, 800 °C
refractive index
n20/D 1.544 (lit.)
mp
1610 °C (lit.)
density
2.6 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤100 mg/kg
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
Looking for similar products? Visit Product Comparison Guide
General description
Silicon dioxide (SiO2) exists in three crystalline forms, namely quartz, tridymite and cristobalite. It reacts with hydrofluoric acid to form silicon tetrafluoride (SiF4) and water. Silicates are formed on reacting SiO2 with alkali melts.[1] SiO2 is the main component in glass, brick and concrete and also forms the insulator in silicon devices.[2] The alteration of the surface of SiO2 with (3-aminopropyl)triethoxysilane (APTES) for binding lactate dehydrogenase (LDH) to form an amino layer has been reported.[3] The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.[4]
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
Iron trichloride/silicon dioxide reacts as oxidant or Lewis acid with phenol ethers.
Jempty TC, et al.
The Journal of Organic Chemistry, 46(22), 4545-4551 (1981)
Electronic structure of silicon dioxide (a review).
Nekrashevich SS and Gritsenko VA.
Physics of the Solid State, 56(2), 207-222 (2014)
Eagleson M.
Concise Encyclopedia Chemistry, 983-984 (1994)
Surface modification of silicon dioxide, silicon nitride and titanium oxynitride for lactate dehydrogenase immobilization.
Saengdee P, et al.
Biosensors And Bioelectronics, 67, 134-138 (2015)
Study of silicon-silicon dioxide structure by electron spin resonance I.
Nishi Y.
Japanese Journal of Applied Physics, 10(1), 52-52 (1971)
-
Is this product a fine powder?
1 answer-
Helpful?
-
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service
