Metasilicic acid

HCID 14768CAS 1343-98-2

Basic information

Standard SMILES
O=[Si](O)O
InChIKey
IJKVHSBPTUYDLN-UHFFFAOYSA-N
Molecular formula
H2O3Si
Average molar mass
78.099 g/mol
Monoisotopic mass
77.97732045

Overview

See also: Silicate (annotation moved to).

Names & identifiers

Preferred name
Metasilicic acid
IUPAC
dihydroxy(oxo)silane
English name
Silicic acid
Molecular formula
H2O3Si
Molecular weight
78.1

Names & synonyms

Metasilicic acid7699-41-4Bio-SilSilicic acid (H2SiO3)Acidum silicicumKieselsaureKieselsaure [German]UNII-4OI8D3YOH1EINECS 231-716-34OI8D3YOH1METASILICIC ACID [MI]DTXSID30872499
Show more names
HYDRATED SILICAPRECIPITATED SILICASilicicSILICA ACIDKieselsremetasilicicKieselsre,E551metasilicicaci
RefChem:156809DTXCID0032362231-716-3(H2SiO3)n-(-Si(OH)2O-)-nCHEBI:29379dihydroxy(oxo)silaneH2O3Si

Database identifiers

CAS
1343-98-2、7699-41-4
PubChem CID
14768
DTXSID
DTXSID30872499
UNII
4OI8D3YOH1
EC Number
231-716-3
Nikkaji
J215.993G

Properties

Computed structural properties

Topological polar surface area
57.5 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
3
Rotatable bonds
0
Heavy atoms
4

Physicochemical properties

Melting point
1704 ℃ · 1704℃
solubility
2 O; · insoluble in H2O; soluble in HF
form
powder
color
White
PH
1 · pKa1= 9.65, pKa2 = 13.09(25℃)
Dielectric constant
2 · 2.0(Ambient)

Safety & regulation

GHS classification

GHS Classification · 5 items

This chemical does not meet GHS hazard criteria for 4.8% (5 of 105) of reports.

Warning

H319 (90.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P319, P337+P317, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 105 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Hazard information

Regulatory Information · 2 items

Chemical: Silicic acid (H2SiO3)

Silicic acid (H2SiO3): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

Other Safety InformationIMAP assessments - Silicic acid (H2SiO3): Human health tier I assessment
Hazard Classes and CategoriesEye Irrit. 2 (90.5%)

Safety data

OEB
B
OEL
TWA: 6.0 mg/m3
PPE
dust mask type N95 (US), Eyeshields, Gloves
wgk
3
tsca
TSCA listed
rtecs
VV8853000

Chemistry & industry

Uses & manufacturing

General Manufacturing InformationSilicic acid (H2SiO3): ACTIVE
Applications · 3 items

DescriptionSilicic acid is the general name that refers to the group of chemical compounds of the element hydrogen, silicon, and oxygen with the formula [SiOx(OH)4-2x]n. H4SiO4 is the most predominant form. Silicic acid is a hydrated form of silicon dioxide. It belongs to the family of Miscellaneous Silicates. These are inorganic compounds in which the largest metallic oxoanion is silicate, to which either no atom or a non metal atom is bonded. Silicic acid is contained in many foods, such as grain, fruit and vegetables (borage). It is commonly used in the manufacture of toothpastes and as a stationary phase for chromatography.It is utilized for the manufacture catalyst and catalyst carrier. It is involved in tungsten filament production as chemical reagent and flux. Further, it is used for oil and wax decoloring.

UsesLaboratory reagent and reinforcing agent in rubber.

UsesSilicic acid is used in protein chromatography. Silicic acid has been used in a study to demonstrate the anti-biofilm potential of a glycolipid surfactant produced by a tropical marine strain of Serratia marcescens. Silicic acid has also been used to study the antioxidant activity of fresh and processed Jalapeno and Serrano peppers.

Upstream & downstream products

Upstream raw materials

Suppliers50 total

湖北永阔科技有限公司027-59223108 15972152991 · [email protected]
湖北万得化工有限公司15377098680 15377098680 · [email protected]
Hebei Chuanghai Biotechnology Co., Ltd+86-17732866630 · [email protected]
天津市光复科技发展有限公司022-85689490 13132141716 · [email protected]
上海光铧科技有限公司13801626616 · [email protected]
Additional notes · 1 item

DefinitionThe jellylike precipitate obtained when sodium silicate solution is acidified. The proportion of water varies with the conditions of preparation and decreases gradually during drying and ignition, until relatively pure silica remains. During drying the je

Related reactions

6 records

Linked notes

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