규산
규산 · 규산(SILICICACID) · HYDRATED SILICA · PRECIPITATED SILICA · bio-sil · Silicic · SILICA ACID · Kieselsre
식별자 및 물리적 특성
| CAS No. | 1343-98-2 |
|---|---|
| 분자식 | H2O3Si |
| 평균 분자량 | 78.099 g/mol |
| 단동위원소 질량 | 77.97732045 g/mol |
| SMILES | O=[Si](O)O |
| InChIKey | IJKVHSBPTUYDLN-UHFFFAOYSA-N |
| PubChem CID | 14768 |
| EC No. | 231-716-3 |
| DTXSID | DTXSID30872499 |
| 현지명 | 규산 |
화학 및 물리적 성질
| 극성 표면적 | 57.5 |
|---|---|
| 수소 결합 공여자 수 | 2 |
| 수소 결합 수용자 수 | 3 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 4 |
| 형식 전하 | 0 |
| 복잡도 | 26.3 |
| 녹는점 | 1704℃ |
| 용해도 | insoluble in H2Osoluble in HF |
| 물리적 상태 | 가루 |
| 색상 | 하얀색 |
| pH | pKa1= 9.65, pKa2 = 13.09(25℃) |
| 유전율 | 2.0(Ambient) |
| InChI | 1S/H2O3Si/c1-4(2)3/h1-2H |
| InChIKey | IJKVHSBPTUYDLN-UHFFFAOYSA-N |
| SMILES | O[Si](O)=O |
| EPA | Silicic acid (H2SiO3) (7699-41-4) |
화학적 성질
Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder
안전 및 규제
| GHS 분류 | This chemical does not meet GHS hazard criteria for 4.8% (5 of 105) of reports.WarningH319 (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. |
|---|---|
| 규제 정보 | 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. |
| 기타 안전 정보 | IMAP assessments - Silicic acid (H2SiO3): Human health tier I assessment |
| Hazard Classes and Categories | Eye Irrit. 2 (90.5%) |
| 직업 노출 등급(OEB) | B |
| 직업 노출 한계(OEL) | TWA: 6.0 mg/m3 |
| 수질 위해 등급(WGK) | 3 |
| TSCA 등재 상태 | TSCA listed |
| RTECS 번호 | VV8853000 |
| 위험 문구(R) | 36/37 |
| 위험 표시 | Xi |
| 안전 문구(S) | 22-26-36 |
| 기존화학 물질 | KE-23144 |
| 위험 등급 | Eye Irrit. 2STOT SE 3 |
| 저장 분류 | 11 - Combustible Solids |
용도
개요
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.
용도
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.