メタけい酸

Metasilicic acid

HCID 14768CAS 1343-98-2

基本情報

標準SMILES
O=[Si](O)O
InChIKey
IJKVHSBPTUYDLN-UHFFFAOYSA-N
分子式
H2O3Si
平均分子量
78.099 g/mol
単同位体質量
77.97732045

概要

See also: Silicate (annotation moved to).

名称と識別子

優先名称
Metasilicic acid
IUPAC
dihydroxy(oxo)silane
現地名
メタけい酸
英語名
Silicic acid
分子式
H2O3Si
分子量
78.1

名称と別名

Metasilicic acid7699-41-4Bio-SilSilicic acid (H2SiO3)Acidum silicicumKieselsaureKieselsaure [German]UNII-4OI8D3YOH1EINECS 231-716-34OI8D3YOH1METASILICIC ACID [MI]DTXSID30872499
名称をさらに表示
メタけい酸二酸化けい素N水和物HYDRATED SILICAPRECIPITATED SILICASilicicSILICA ACIDKieselsremetasilicicKieselsre,E551metasilicicaci
RefChem:156809DTXCID0032362231-716-3(H2SiO3)n-(-Si(OH)2O-)-nCHEBI:29379dihydroxy(oxo)silaneH2O3Si

データベース識別子

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

物性

構造計算による物性

極性表面積
57.5 Ų
水素結合供与体数
2
水素結合受容体数
3
回転可能結合数
0
重原子数
4

物理化学的性質

融点
1704 ℃ · 1704℃
溶解性
2 O; · insoluble in H2O; soluble in HF
外見
粉
色
白い
PH
1 · pKa1= 9.65, pKa2 = 13.09(25℃)
Dielectric constant
2 · 2.0(Ambient)

化学的性質

化学的特性Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder

安全と法規制

GHS分類

GHS Classification · 5 件

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.

危険有害性情報

Regulatory Information · 2 件

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%)

安全データ

OEB
B
OEL
TWA: 6.0 mg/m3
wgk
3
tsca
TSCA listed
rtecs
VV8853000
risk_code
36/37

化学と産業

用途と製造

General Manufacturing InformationSilicic acid (H2SiO3): ACTIVE
応用分野 · 2 件

説明Silicic 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.

使用Silicic 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.

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補足説明 · 2 件

定義本品は、含水ケイ酸であり、次の化学式で表される。xは製法により異なり、0を含む

定義The 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

関連反応

6 件

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